WO2005019231A1 - ホスファゼン化合物、及び感光性樹脂組成物並びにその利用 - Google Patents
ホスファゼン化合物、及び感光性樹脂組成物並びにその利用 Download PDFInfo
- Publication number
- WO2005019231A1 WO2005019231A1 PCT/JP2004/007719 JP2004007719W WO2005019231A1 WO 2005019231 A1 WO2005019231 A1 WO 2005019231A1 JP 2004007719 W JP2004007719 W JP 2004007719W WO 2005019231 A1 WO2005019231 A1 WO 2005019231A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compound
- group
- photosensitive resin
- resin composition
- phenoxyphosphazene
- Prior art date
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- -1 Phosphazene compound Chemical class 0.000 title claims abstract description 389
- 239000011342 resin composition Substances 0.000 title claims abstract description 281
- 229920001721 polyimide Polymers 0.000 claims abstract description 369
- 150000001875 compounds Chemical class 0.000 claims abstract description 349
- 239000009719 polyimide resin Substances 0.000 claims abstract description 334
- 238000004132 cross linking Methods 0.000 claims abstract description 53
- 239000012948 isocyanate Substances 0.000 claims abstract description 40
- 239000010408 film Substances 0.000 claims description 332
- 229920005989 resin Polymers 0.000 claims description 186
- 239000011347 resin Substances 0.000 claims description 186
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 176
- 238000000034 method Methods 0.000 claims description 144
- 239000003960 organic solvent Substances 0.000 claims description 134
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 120
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 92
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 83
- 239000000203 mixture Substances 0.000 claims description 70
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 69
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 51
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 51
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 46
- 125000004122 cyclic group Chemical group 0.000 claims description 39
- 125000004464 hydroxyphenyl group Chemical group 0.000 claims description 38
- 239000003999 initiator Substances 0.000 claims description 38
- GKTNLYAAZKKMTQ-UHFFFAOYSA-N n-[bis(dimethylamino)phosphinimyl]-n-methylmethanamine Chemical compound CN(C)P(=N)(N(C)C)N(C)C GKTNLYAAZKKMTQ-UHFFFAOYSA-N 0.000 claims description 34
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 32
- 230000001681 protective effect Effects 0.000 claims description 31
- 150000002513 isocyanates Chemical class 0.000 claims description 30
- 239000004642 Polyimide Substances 0.000 claims description 26
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims description 26
- 125000003118 aryl group Chemical group 0.000 claims description 25
- 230000001070 adhesive effect Effects 0.000 claims description 24
- 239000012787 coverlay film Substances 0.000 claims description 24
- 239000000853 adhesive Substances 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 18
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims description 17
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 15
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 14
- 125000005641 methacryl group Chemical group 0.000 claims description 12
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 claims description 11
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 10
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 125000001989 1,3-phenylene group Chemical group [H]C1=C([H])C([*:1])=C([H])C([*:2])=C1[H] 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 7
- 125000002030 1,2-phenylene group Chemical group [H]C1=C([H])C([*:1])=C([*:2])C([H])=C1[H] 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 5
- QEGDQEAPFWKYDU-UHFFFAOYSA-N 6-bromo-3-(5-chloro-2-ethylsulfonylanilino)-7-[[4-(thiophen-3-ylmethyl)piperazin-1-yl]methyl]quinazolin-4-one Chemical compound BrC=1C=C2C(N(C=NC2=CC=1CN1CCN(CC1)CC1=CSC=C1)NC1=C(C=CC(=C1)Cl)S(=O)(=O)CC)=O QEGDQEAPFWKYDU-UHFFFAOYSA-N 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 4
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- OQCFWECOQNPQCG-UHFFFAOYSA-N 1,3,4,8-tetrahydropyrimido[4,5-c]oxazin-7-one Chemical compound C1CONC2=C1C=NC(=O)N2 OQCFWECOQNPQCG-UHFFFAOYSA-N 0.000 claims 1
- OVSKIKFHRZPJSS-UHFFFAOYSA-N 2,4-D Chemical compound OC(=O)COC1=CC=C(Cl)C=C1Cl OVSKIKFHRZPJSS-UHFFFAOYSA-N 0.000 claims 1
- 150000002118 epoxides Chemical class 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 143
- 239000004593 Epoxy Substances 0.000 abstract description 59
- 238000004519 manufacturing process Methods 0.000 abstract description 40
- 239000003063 flame retardant Substances 0.000 abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 31
- 238000011161 development Methods 0.000 abstract description 26
- 206010034972 Photosensitivity reaction Diseases 0.000 abstract description 7
- 230000036211 photosensitivity Effects 0.000 abstract description 7
- 230000007062 hydrolysis Effects 0.000 abstract description 5
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- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 88
- 150000004985 diamines Chemical class 0.000 description 88
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- 239000000047 product Substances 0.000 description 67
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- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 63
- 239000003822 epoxy resin Substances 0.000 description 59
- 230000000704 physical effect Effects 0.000 description 53
- 230000002829 reductive effect Effects 0.000 description 48
- 239000007787 solid Substances 0.000 description 48
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 46
- 238000001723 curing Methods 0.000 description 44
- 238000010521 absorption reaction Methods 0.000 description 43
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 42
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 42
- 239000000178 monomer Substances 0.000 description 41
- 235000013824 polyphenols Nutrition 0.000 description 41
- 239000000126 substance Substances 0.000 description 40
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 39
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 39
- 239000010410 layer Substances 0.000 description 39
- 238000010438 heat treatment Methods 0.000 description 38
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 37
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 36
- 238000003756 stirring Methods 0.000 description 36
- 239000011889 copper foil Substances 0.000 description 35
- 239000002994 raw material Substances 0.000 description 31
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- 238000001035 drying Methods 0.000 description 28
- 230000005856 abnormality Effects 0.000 description 27
- 125000003700 epoxy group Chemical group 0.000 description 26
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 25
- 235000019441 ethanol Nutrition 0.000 description 24
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- 238000010992 reflux Methods 0.000 description 23
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 22
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 22
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 22
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- NWVVVBRKAWDGAB-UHFFFAOYSA-N p-methoxyphenol Chemical compound COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 description 17
- 239000004698 Polyethylene Substances 0.000 description 16
- 238000007598 dipping method Methods 0.000 description 16
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 15
- 235000011121 sodium hydroxide Nutrition 0.000 description 15
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 13
- 150000007514 bases Chemical class 0.000 description 13
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 12
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- 230000000052 comparative effect Effects 0.000 description 12
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- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 11
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- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- UBIJTWDKTYCPMQ-UHFFFAOYSA-N hexachlorophosphazene Chemical compound ClP1(Cl)=NP(Cl)(Cl)=NP(Cl)(Cl)=N1 UBIJTWDKTYCPMQ-UHFFFAOYSA-N 0.000 description 10
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- AOJFQRQNPXYVLM-UHFFFAOYSA-N pyridin-1-ium;chloride Chemical compound [Cl-].C1=CC=[NH+]C=C1 AOJFQRQNPXYVLM-UHFFFAOYSA-N 0.000 description 10
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- CPOUUWYFNYIYLQ-UHFFFAOYSA-M tetra(propan-2-yl)azanium;hydroxide Chemical compound [OH-].CC(C)[N+](C(C)C)(C(C)C)C(C)C CPOUUWYFNYIYLQ-UHFFFAOYSA-M 0.000 description 1
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- FHYUCVWDMABHHH-UHFFFAOYSA-N toluene;1,2-xylene Chemical group CC1=CC=CC=C1.CC1=CC=CC=C1C FHYUCVWDMABHHH-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G79/00—Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule
- C08G79/02—Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule a linkage containing phosphorus
- C08G79/025—Polyphosphazenes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/062—Organo-phosphoranes without P-C bonds
- C07F9/065—Phosphoranes containing the structure P=N-
- C07F9/067—Polyphosphazenes containing the structure [P=N-n]
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6581—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms
- C07F9/65812—Cyclic phosphazenes [P=N-]n, n>=3
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/037—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polyamides or polyimides
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
- G03F7/0388—Macromolecular compounds which are rendered insoluble or differentially wettable with ethylenic or acetylenic bands in the side chains of the photopolymer
Definitions
- the present invention relates to a phosphazene compound, a photosensitive resin composition, and use thereof. More specifically, a phosphazene conjugate obtained by reacting a phenoxyphosphazene compound and Z or a cross-linked phenoxyphosphazene compound with an epoxy compound having an unsaturated double bond and Z or an isocyanate compound. And after curing using a photosensitive resin composition capable of performing aqueous development, obtaining a good pattern shape, and further simplifying the production process, particularly a phosphazene-based flame retardant having a phenolic hydroxyl group.
- the present invention relates to a photosensitive resin composition having excellent flame retardancy of a resin film and its use.
- photosensitive materials are used for various uses. That is, formation of a patterned circuit (pattern circuit) on a printed wiring board substrate, formation of a protective layer for protecting the surface of the printed wiring board and the pattern circuit, and formation of an interlayer insulating layer of the multilayer printed wiring board.
- a photosensitive material is used for forming or the like. Photosensitive materials used in such applications include liquid photosensitive materials and film-shaped photosensitive materials. Material. Among these, the film-shaped photosensitive material has advantages such as excellent uniformity of film thickness and workability as compared with a liquid photosensitive material.
- a resist film for a pattern circuit used for forming a pattern circuit a photosensitive coverlay film used for forming the protective layer, a photosensitive dry film resist used for forming the interlayer insulating layer, etc.
- Various film-like photosensitive materials have been used.
- a polymer film called a coverlay film is attached to the surface of the FPC for the purpose of protecting the conductor surface.
- a coverlay film that has been processed into a predetermined shape and has an adhesive on one side is overlaid on the surface of the FPC, aligned, and then heated by a press or the like.
- the method of crimping is common.
- the adhesives used here are mainly epoxy-based adhesives and acrylic-based adhesives, and these adhesives have low solder heat resistance and low adhesive strength at high temperatures.
- a polyimide film was used as the coverlay film, its performance could not be fully utilized due to reasons such as poor flexibility.
- the photosensitive coverlay film and the photosensitive dry film resist both are collectively referred to as photosensitive dry film resists
- the photosensitive coverlay film and the photosensitive dry film resist include acrylic and epoxy resins. Only a photosensitive dry film resist is used, and there is a problem that the cured film is inferior in heat resistance, chemical resistance, flex resistance and flame retardancy. As described above, resin has a drawback that it is more liable to burn than metal and inorganic materials, and therefore, improvement of flame retardancy is an issue.
- a method for realizing flame retardancy there is a method of mixing a halogen-containing compound.
- a photosensitive dry film resist prepared by curing a photosensitive resin composition containing a brominated flame retardant (for example, see Patent Document 1).
- the photosensitive dry film resist described in Patent Document 1 contains a brominated flame retardant, and a flame retardant containing halogen may adversely affect the environment.
- flame-retardants containing halogen have a large impact on the environment, and the worldwide trend toward non-halogen-based (halogen-free) flame retardants.
- halogen-free flame retardants are being studied instead of bromine-based flame retardants (for example, see Patent Documents 2, 3, and 4).
- Known halogen-free flame retardants include nitrogen-based, phosphorus-based, and inorganic compounds, and hydrates of phosphate esters, red phosphorus, and metal oxides.
- the phosphoric acid ester 'red phosphorus may be hydrolyzed to generate phosphoric acid, which tends to reduce the electrical reliability.
- Metal oxides are difficult to use as photosensitive resins because they scatter and absorb light.
- Patent Document 5 a flame retardant using a resin to which a silicone compound is added has been studied.
- phosphazene compounds have been studied as flame retardants, and are known to exhibit high flame retardancy imparting effects (for example, see Patent Document 6).
- Patent Document 7 discloses a flame-retardant resin composition in which a phosphazene compound is blended with a polycarbonate resin or the like.
- the phosphazene-based compound is excellent in the effect of improving the flame retardancy, has the advantage of being a halogen-free flame retardant, and has a small load on the environment, and has the advantage of being low.
- Patent Document 3 Patent Document 3
- Patent Document 4 Patent Document 4
- Patent Document 5 (Patent Document 5)
- Patent Document 6 (Patent Document 6)
- Patent Document 7 Patent Document 7
- Patent Document 8 (Patent Document 8)
- Patent Document 9 (Patent Document 9)
- Patent Document 10 Patent Document 10
- nitrogen-based, phosphorus-based, and inorganic compounds are used as halogen-free flame retardants.
- the nitrogen-based compound generally has an effect on the curability of the resin, and the phosphorus-based compound has an effect such as a decrease in moisture resistance. Therefore, the range of choice of a flame retardant material that can be used for a photosensitive dry film resist that requires electrical insulation and hydrolysis resistance is limited.
- Resin is used as a resin component used for electric and electronic components, and a printed wiring board on which the resin component is mounted has a solder (Pb) -free solder from the viewpoint of environmental issues.
- Pb solder
- Lead-free solder has been put to practical use. If lead-free solder is used, the reflow temperature will rise (250 ° C-260 ° C), so resin parts must have sufficient heat resistance.
- a resin in which the above-mentioned conventional phosphazene-based compound is mixed as a flame retardant is used, there is a problem that the phosphazene-based compound volatilizes and disappears in a powerful high-temperature region. There is a demand for a flame retardant having even better survivability in resin.
- photocurable resins that are cured by irradiation with energy rays such as ultraviolet rays are used in a wide variety of applications, mainly in the fields of coating materials and electric and electronic materials, in place of conventional thermosetting resins.
- energy rays such as ultraviolet rays
- examples of the compound that imparts flame retardancy to the photocurable resin include an acrylic compound having a halogen, a resin that is liable to be hydrolyzed, and a phosphate ester.
- Compounds having a double bond such as toluene-based compounds are known.
- these conjugates have a problem that the load on the environment is large and a problem that the hydrolysis resistance is low.
- the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to perform water-based development without using a halogen-based flame retardant, obtain a good pattern shape, obtain heat resistance, and improve heat resistance.
- Various physical properties such as water decomposition resistance, processability (including solvent solubility), and adhesiveness, as well as photosensitivity, flame retardancy, and sufficient mechanical strength can be achieved.
- Phosphazene compounds that can be suitably used in the production of wiring boards that can sufficiently cope with reduction in weight, weight reduction, photosensitive resin compositions using the phosphazene conjugates, and typical uses thereof. To provide.
- a specific (A-1) phenoxyphosphazene compound and / or (A-2) a crosslinked phenoxyphosphazene compound and a specific (B A phosphazene-based compound obtained by reacting an epoxy compound and / or (C) an isocyanate compound is suitable as a flame retardant for a resin composition, particularly when used as a flame retardant for a photosensitive resin composition. It has been found that the balance between flame retardancy, photosensitivity and other physical properties can be improved, and the present invention has been completed.
- the phosphazene conjugate according to the present invention comprises (A-1) a phenoxyphosphazene compound having a phenolic hydroxyl group and Z or the (A-1) phenoxyphosphazene compound.
- (A-2) a crosslinked phenoxyphosphazenic compound having at least one phenolic hydroxyl group, and an epoxy double bond (B) having an unsaturated double bond, and / or (C) ) It is obtained by reacting the compound with an isocyanate compound, and has an unsaturated double bond in the molecule.
- the (A-1) phenoxyphosphazene compound is represented by the following general formula (1) [0020] [Formula 1] OORRPIII, ⁇ ,
- R 1 and R 2 each represent a phenyl group or a hydroxyphenyl group, and at least one hydroxyphenyl group is contained in one molecule.
- the (A-2) cross-linked phenoxyphosphazene compound is an o-phenylene group, an m-phenylene group, a p-phenylene group or a General formula (3)
- R 7 represents one C (CH) one, -SO one, -S- or _ ⁇ _, and p represents 0 or 1.
- the above (A-1) phenoxyphosphazene compound is cross-linked by a phenylene-based cross-linking group containing at least one of the bis-phenylene groups represented by .
- (A-3) a phenylene-based crosslinked phenoxyphosphazene conjugate having at least one phenolic hydroxyl group in the range of 50 to 99.9%. More preferably, there is.
- the photosensitive resin composition according to the present invention is characterized by containing at least the phosphazene compound according to any of the above and (D) a soluble polyimide resin which is soluble in an organic solvent. .
- the above photosensitive resin composition may further comprise (E-1) a photoreaction initiator. Is preferred.
- a photosensitive resin composition according to the present invention is characterized by containing at least the phosphazene compound described in any of the above and (E-1) a photoreaction initiator.
- the photosensitive resin composition preferably further contains (E-2) a compound having a carbon-carbon double bond.
- the soluble polyimide resin (D) is at least one selected from dioxolane, dioxane, tetrahydrofuran, N, N-dimethylformamide, N, N-dimethylacetamide, and N_methyl_2-pyrrolidone. It is preferable to dissolve at least 1% by weight in a kind of organic solvent in a temperature range from room temperature to 100 ° C.
- the use of the photosensitive resin composition according to the present invention is not particularly limited.
- a photosensitive resin film formed using the photosensitive resin composition may be used.
- S can.
- This photosensitive resin film can be used as an adhesive sheet for a printed wiring board, a photosensitive coverlay film, an insulating circuit protective film for a printed wiring board, or a substrate for a printed wiring board.
- the phosphazene compound according to the present invention is obtained by crosslinking the (A-1) phenoxyphosphazene compound having a phenolic hydroxyl group and / or the (A-1) phenoxyphosphazene compound.
- A-2) a phosphazene ligase obtained by reacting a crosslinked phenoxyphosphazene compound with an (B) epoxy compound having an unsaturated double bond and / or (C) an isocyanate ligate. And has an unsaturated double bond in the molecule.
- the photosensitive resin composition according to the present invention is configured to include at least the phosphazene compound and (D) a soluble polyimide resin that is soluble in an organic solvent.
- the composition includes at least the phosphazene conjugate and the (E-1) photoinitiator.
- the phosphazene compound having the above constitution and the photosensitive resin composition containing the phosphazene compound are more excellent in heat resistance, dielectric properties and flame retardancy than the conventional thermoplastic polyimide resin-based adhesive material. Can be bonded at a low temperature, so it has excellent workability. Because of the use of a specific polyimide resin, compared to conventional polyimide-zepoxy resin-mixed adhesives, it has various properties such as workability, heat resistance, and dielectric properties. The balance is excellent. Therefore, the photosensitive resin composition according to the present invention is capable of bonding at a lower temperature and has excellent workability and handleability as well as exhibiting excellent heat resistance and dielectric properties and flame retardancy as compared with conventional ones. Becomes possible.
- the photosensitive resin composition according to the present invention when used as a varnish-like solution or the like, a resin preparation useful as an adhesive, a coating agent, an ink, or the like can be obtained.
- the photosensitive resin composition according to the present invention is a resin sheet or a resin film, an adhesive sheet for a printed wiring board (FPC), a photosensitive coverlay film, an insulating circuit protective film for a printed wiring board, or It can be suitably used as a substrate for a printed wiring board or the like.
- the present inventor has found that, as components of the photosensitive resin composition, a specific (G) polyimide resin and a specific (H) phosphazene ligated product (I) It has been found that by selecting a combination with a (meth) acrylic compound, the balance between flame retardancy and other physical properties can be improved, and the present invention has been completed.
- the photosensitive resin composition according to the present invention is a resin composition containing at least (G) a polyimide resin and (H) a phosphazene compound.
- G-1) a soluble polyimide resin having a carboxyl group and / or a hydroxyl group and being soluble in an organic solvent, and
- the (H-1) phenoxyphosphazene compound is represented by the following general formula (1) [0036] [Formula 4] OORRPIII, ⁇ ,
- m represents an integer of 3 to 30
- R 1 and R 2 represent a phenyl group or a hydroxyphenyl group, and at least one hydroxyphenyl group is contained in one molecule.
- the (H-1) phenoxyphosphazene compound is represented by the following general formula (2)
- the (H-2) crosslinked phenoxyphosphazene compound is an o-phenylene group, an m-phenylene group, a p-phenylene group or General formula (3) shown
- R 7 represents one C (CH) -SO —S— or _0_, and p represents 0 or 1.
- the phenylene-based cross-linking group is interposed between the two oxygen atoms from which the phenyl group and the hydroxyphenyl group of the (H-1) phenoxyphosphazene compound are eliminated, and
- the content ratio of the phenyl group and the hydroxyphenyl group in the crosslinked phenoxyphosphazene compound, S, is 50 99.9% based on the total number of the phenyl group and the hydroxyphenyl group in the phenoxyphosphazene compound.
- the (G-1) soluble polyimide resin may be at least one kind selected from the group consisting of an atalinole group, a methacryl group, a butyl group, and an aryl group. It is preferable to have a saturated double bond.
- the (H) phosphazene compound is preferably Preferably, it is contained in an amount within the range of 100 parts by weight based on 100 parts by weight of the total weight of G) the polyimide resin and (I) the (meth) acrylic compound.
- the use of the photosensitive resin composition according to the present invention is not particularly limited, but examples thereof include a photosensitive resin film formed using the above-described photosensitive resin composition. That can be S.
- the photosensitive resin film is prepared by using 1% by weight of sodium hydroxide at 40 ° C as a developing solution, and using a spray developing machine as a developing means under a spray pressure of 0.85 MPa.
- the dissolution time in the power is preferably 180 seconds or less.
- this photosensitive resin film can be used as a resist film for a pattern circuit, a photosensitive resist film, or a photosensitive dry film resist.
- the photosensitive resin composition according to the present invention comprises (G-1) a soluble polyimide resin and (H-1) a phenoxyphosphazene compound or (H-2) a crosslinked phenoxy compound.
- the composition contains at least a phosphazene compound and (I) a (meth) acrylic compound.
- the phosphazene conjugate of the above constitution and the photosensitive resin composition containing the phosphazene compound are the same as those of conventional thermoplastic polyimide resins which are not only excellent in photosensitivity, heat resistance, 'dielectric properties' but flame retardancy. Because it can be bonded at a lower temperature than the system adhesive material, it is also excellent in workability.
- the use of a specific polyimide resin provides a better balance of various properties such as processability, heat resistance, and dielectric properties than conventional polyimide / epoxy resin adhesives. I have.
- the photosensitive resin composition according to the present invention has excellent developability in a basic aqueous solution. Therefore, the photosensitive resin composition according to the present invention is capable of bonding at a lower temperature, has excellent adhesive properties and handleability, and has excellent photosensitive 'heat resistance' and 'dielectric properties'. It becomes possible to exhibit flammability.
- the photosensitive resin composition according to the present invention when used as a varnish-like solution or the like, a resin preparation useful as an adhesive, a coating agent, an ink, or the like can be obtained.
- the photosensitive resin composition according to the present invention when used as a photosensitive resin film, it can be suitably used as a resist film for a pattern circuit, a photosensitive coverlay film, or a photosensitive dry film resist.
- the present invention provides a photosensitive resin composition containing (K) a soluble polyimide resin having a carboxyl group and Z or a hydroxyl group, (L) a phenoxyphosphazene compound, and (M) a (meth) acrylic compound. Thing,
- the (L) phenoxyphosphazene compound is represented by the general formula (22):
- R b represents a group _P ( ⁇ P
- a crosslinking group containing any one of bisphenylene groups represented by The present invention relates to a photosensitive resin composition characterized by containing a (L3) cross-linked phenoxyphosphazene compound having a structure cross-linked by the presence of a compound.
- the soluble polyimide resin as the component (K) is at least one selected from the group consisting of an acryl group, a methacryl group, a vinyl group, and an aryl group. It is preferable to have a carbon-carbon double bond.
- the component (L) is in a range of 1 to 100 parts by weight based on 100 parts by weight of the total amount of the component (K) and the component (M). Is preferred.
- the present invention also relates to a photosensitive dry film resist prepared using any of the photosensitive resin compositions described above.
- the photosensitive dry film resist 1% by weight of sodium hydroxide is used as a developing solution at 40 ° C, and when a spray developing machine is used as a developing means, a spray pressure of 0% is used.
- the dissolving time power S under the condition of 85 MPa is preferably 180 seconds or less.
- the present invention relates to a printed wiring board characterized by using any one of the photosensitive dry film resists described above as an insulating protective layer.
- FIG. 1 is a schematic diagram showing the shape of a comb pattern used in an example of the present invention.
- the phosphazene conjugate according to the present invention is obtained by crosslinking the (A-1) phenoxyphosphazene compound having a phenolic hydroxyl group and / or the (A-1) phenoxyphosphazene compound. 2) A compound obtained by reacting a crosslinked phenoxyphosphazene compound with (B) an epoxy conjugate having an unsaturated double bond and / or (C) an isocyanate conjugate. Having an unsaturated double bond in the molecule.
- the phenolic hydroxyl group is contained in the molecule, when the photosensitive resin composition is cured, it can react with an epoxy resin component described later, in particular, to form a network structure. Therefore, efficient curing is possible, and a cured product having excellent heat resistance can be obtained. Further, it is possible to improve the alkali solubility as compared with the conventional phosphazene compound.
- the phosphazene compound according to the present invention that is, (A-1) a phenoxyphosphazene conjugate and / or (A-2) a crosslinked phenoxyphosphazene conjugate.
- a phosphazene compound having an unsaturated double bond in the molecule, which is obtained by reacting a product with (B) an epoxy conjugate and / or (C) an isocyanate conjugate, is referred to for convenience of explanation.
- a double bond phosphazene compound [(A-1) Phenoxyphosphazene compound]
- the (A-1) phenoxy phosphazene compound used in the synthesis of the double bond phosphazene conjugate according to the present invention is not particularly limited as long as it is a phosphazene compound having a phenolic hydroxyl group.
- At least one of (A-11) cyclic phenoxyphosphazene conjugate and (A-12) chain phenoxyphosphazene compound is preferably used.
- R 1 and R 2 represent a phenyl group or a hydroxyphenyl group (one CH 2 OH), and at least one hydroxyphenyl group in one molecule. ).
- n an integer of 3 to 10,000
- R 3 and R 4 each represent a phenyl group or a hydroxyphenyl group, and at least one hydroxyphenyl group is contained in one molecule.
- the (A-11) cyclic phenoxyphosphazene compound and (A-12) chain phenoxyphosphazene compound have excellent compatibility with soluble polyimide resins and epoxy resins described below.
- the heat resistance after curing the resulting photosensitive resin composition can also be excellent.
- the method for producing the (A-11) cyclic phenoxyphosphazene compound and (A-12) chain phenoxyphosphazene compound is not particularly limited, but specific examples include the following documents: Can be produced by the method described in (1).
- alkali metal salts eg, lithium salt, sodium salt, potassium salt, etc.
- the obtained alkali metal salt of the protected phenol compound (alkali metal salt of 4-methoxyphenol or alkali metal salt of 4_ (benzyloxy) phenol) is converted to phosphonitrile chloride described in the above-mentioned reference E'F. Let react.
- the methyl group or the benzyl group is deprotected and changed to a hydroxyl group by further reacting with pyridine halide hydrochloride, boron tribromide or the like.
- pyridine halide hydrochloride boron tribromide or the like.
- the alkali metal of the protected phenol compound and / or the hydroxyalkyl phenol may be used.
- the photosensitive resin film obtained by curing the obtained photosensitive resin composition can be used without using a halogen compound. It is particularly preferable because it can impart not only high solder heat resistance but also excellent electrical insulation.
- n indicates an integer of 3 to 10000.
- At least one dichlorophosphazene compound selected from the group consisting of linear or chain dichlorophosphazene compounds represented by the following formula is used as a starting phosphazene compound.
- M represents an alkali metal
- the position of the alkyloxy group (methoxy group) is not particularly limited.
- a phenyl group and a methoxyphenyl group can be introduced into the structure represented by the general formula (4) or (5).
- at least one methoxyphenyl group per molecule is required.
- the details of the reaction conditions are not particularly limited, and known conditions may be used.
- the (A-2) crosslinked phenoxyphosphazene compound used in the synthesis of the double bond phosphazene compound according to the present invention has at least one phenolic hydroxyl group as described above, and A-1) A phosphazene compound obtained by crosslinking a phenoxyphosphazene conjugate.
- the (A-2) crosslinked phenoxyphosphazene conjugate may be any one obtained by crosslinking the above (A-1) phenoxyphosphazene compound with a known crosslinking group, and is preferably a phenylene-based crosslinked phenoxyphosphazene compound. It is preferable that the above (A-1) phenoxyphosphazene compound is crosslinked by a group.
- the phenylene-based cross-linking group may be any cross-linking group containing a phenyl group in the structure. Specifically, the following o_phenylene group, m-phenylene group, and p-phenylene group are shown below. [0084] [Formula 16]
- R 7 represents one C (CH) one, -SO one, -S- or _ ⁇ _, and p represents 0 or 1.
- any applicable compound may be used as the phenoxyphosphazene conjugate.
- a phenoxyphosphazene compound (A-11) a cyclic phenoxyphosphazene compound and Z or (A-12) a chain phenoxyphosphazene compound, (2)
- the cross-linking conditions should satisfy the following (3) and (4) It is preferable to define as follows.
- the above-mentioned phenylene-based cross-linking group can be formed by the above-mentioned (A-1) phenyloxyphosphazene compound ((A-11) cyclic phenyloxyphosphazene conjugate, and / or — 12) between the two oxygen atoms from which the phenyl group and the hydroxyphenyl group of the chain phenyloxyphosphazene compound are eliminated, and (4) the phenyl group and the hydroxy group of the crosslinked phenoxyphosphazene compound.
- the content ratio of the phenyl group S is in the range of 50 to 99.9% based on the total number of phenyl groups and hydroxyphenyl groups in the phenyloxyphosphazene compound.
- (A-2) a crosslinked phenoxyphosphazene compound satisfying the above conditions (1) and (4) makes it possible to further improve the flame retardancy of the resulting heat resistant resin composition.
- (A-3) The crosslinked phenoxyphosphazene conjugate that satisfies the conditions (1) and (4) is referred to as (A-3) phenylene-based crosslinked phenoxyphosphazene conjugate.
- the method for producing the above (A-2) crosslinked phenoxyphosphazene conjugate is not particularly limited, but the above (A-3) phenylene-based crosslinked phenoxyphosphazene compound is exemplified. An example of the synthesis method will be described.
- M represents an alkali metal
- R 7 represents _C (CH) -SO —S— or _ ⁇
- the compound thus obtained has a methoxyphenyl group (and a phenyl group) introduced into the structure represented by the general formula (4) or (5), and the compound represented by the general formula (8)
- the structure represented by the general formula (4) or (5) is cross-linked by the alkali metal diphenolate represented by ().
- the methyl or benzyl group is then deprotected and converted to a hydroxyl group by reaction with pyridine hydrohalide or boron tribromide.
- the blending amount of the phenoxyphosphazene compound (including the crosslinked body) is not particularly limited, but is 0.1% when the total weight of the heat-resistant resin composition is 100% by weight. It is preferably within the range of 50% by weight. If the content is less than 0.1% by weight, the effect of imparting flame retardancy may be reduced. If the content is more than 50% by weight, a decrease in adhesion and a decrease in mechanical properties may be observed.
- the epoxy compound (B) according to the present invention is not particularly limited as long as it has an epoxy group and an unsaturated double bond in the molecule, and specifically, for example, glycidyl methacrylate, Glycidinoleate tallate, aryl glycidyl ether, glycidyl vinyl ether or general formula (10)
- the (A-1) phenoxyphosphazene compound and (B) the epoxy conjugate are dissolved in an organic solvent.
- organic solvent preferably used are aromatics such as benzene, toluene and xylene; ethers such as ether, tetrahydrofuran and dioxane; N-substituted amides such as N, N-dimethylformamide; These organic solvents may be used alone or in an appropriate combination of two or more.
- the (A-1) phenoxyphosphazene conjugate is melted at the reaction temperature, it can be carried out without a solvent.
- a solution obtained by dissolving the (A-1) phenoxyphosphazene conjugate and the (B) epoxy compound in a temperature range from room temperature to the reflux temperature of the solvent is a tertiary compound such as pyridine or triethylamine. Incubate for 120 hours in the presence of amine. In the case where no solvent is used, the (B-1) phenoxyphosphazene compound is dissolved in the melted (A-1) phenoxyphosphazene compound, and this solution is heated to room temperature or higher (A-1) phenoxyphosphazene compound. The reaction is performed in a temperature range below the reflux temperature of the product. Thereby, the double bond phosphazene compound according to the present invention can be obtained. In this case, a known stabilizer can be added.
- the amount of reaction between the (A-1) phenoxyphosphazene compound having a phenolic hydroxyl group and the (B) epoxy compound having an unsaturated double bond is adjusted to adjust the reaction amount. All phenolic hydroxyl groups of the nonoxyphosphazene compound may be reacted with (B) an epoxy conjugate having an unsaturated double bond.
- the double-bonded phosphazene compound according to the present invention is used as a photosensitive resin composition, all the phenolic properties of the phosphazene compound must be improved in order to improve the solubility in an alkaline aqueous solution as a developer.
- a phosphazene compound having a phenolic hydroxyl group may be left without reacting the hydroxyl group with the (B) epoxy compound having an unsaturated double bond.
- the mixing amount of the epoxy compound (B) is preferably not more than 3 times the molar amount of the phenolic hydroxyl group of the (A-1) phenoxyphosphazene compound by 2.5 times the molar amount. It is more preferred that:
- the lower limit of the amount of the epoxy compound (B) may be determined according to the amount of unsaturated double bonds introduced into the phosphazene conjugate.
- the number of unsaturated double bonds introduced into the phosphazene conjugate is preferably at least one or more per one molecule of the phosphazene compound, and more preferably at least 1.2. Therefore, it is preferable to add 1 mol or more of the epoxy compound (B) per 1 mol of the phosphazene conjugate, more preferably 1.2 mol or more.
- the (C) isocyanate conjugate having an unsaturated double bond used in the synthesis of the double bond phosphazene conjugate according to the present invention will be described.
- the (C) isocyanate conjugate according to the present invention is not particularly limited as long as it has an isocyanate group and an unsaturated double bond in the molecule.
- Examples of the isocyanate H conjugate having an unsaturated double bond include methacryloyl isocyanate, atariloyl isocyanate, methacryloyl ethyl isocyanate, atariloyl ethyl isocyanate, methacryloxyshethyl isocyanate, and atari.
- Loxosheyl isocyanate, butyl dimethylbenzyl isocyanate, m-isopropenyl-hi, hi-dimethylbenzyl isocyanate, 2-methacryloyloxyshetyl isocyanate and the like can be mentioned. These compounds may be used alone or in combination of two or more.
- Organic solvents include N, N-dimethylformamide, N, N-getylhonolemamide, N-methylformanilide, N-formylpiperidine, N, N-dimethylacetamide, N, N-getylacetamide, ⁇ -substituted amides such as N, N-dimethylpropionamide, N-methyl- ⁇ -pyrrolidone, ⁇ -methyl- ⁇ -pyridone, ⁇ -methylcaprolatatam; ⁇ -tetramethylperyl, ⁇ -acetyl- ⁇ - ⁇ -substituted ureas such as pyrrolidone, ⁇ -acetyl- ⁇ -piperidone, ⁇ -acetylcaprolatatam, etc .; ⁇ -substituted thioureas, such as ⁇
- the compounding amount of the above (C) isocyanate compound is preferably not more than 3 times mol with respect to the phenolic hydroxyl group of the (A-1) phenoxyphosphazene compound, and is preferably 2.5 times mol. It is more preferred that:
- the lower limit of the amount of the (C) isocyanate compound may be determined according to the amount of unsaturated double bond introduced into the phosphazene compound.
- the amount of unsaturated double bonds to be introduced into the phosphazene compound is preferably at least one per one molecule of the phosphazene compound, more preferably 1.2 or more. Therefore, it is preferable to add 1 mol or more of the (C) isocyanate ligated product per 1 mol of the phosphazene compound, and it is more preferable to add 1.2 mol or more.
- the photosensitive resin composition according to the present embodiment contains at least the double bond phosphazene compound and (E) a polyimide resin.
- (E-1) a soluble polyimide resin having a carboxy group and / or a hydroxyl group and being soluble in an organic solvent is used as the polyimide resin (E).
- the (E-1) soluble polyimide resin referred to in the present invention refers to a resin having a carboxyl group and Z or a hydroxyl group in a side chain and showing solubility in an organic solvent. This is a convenient name for describing such a polyimide resin.
- soluble in the (E-1) soluble polyimide resin is, as described above, a force indicating that it is soluble in an organic solvent. More specifically, dioxolan, dioxane, tetrahydrofuran, N, N-dimethyl 1% by weight or more dissolved in at least one organic solvent selected from formamide, N, N-dimethylacetamide and N-methyl-2-pyrrolidone in a temperature range from room temperature to 100 ° C.
- the (E-1) soluble polyimide resin may be a resin having an imide ring as a repeating unit in the resin skeleton.
- a broadly-defined polyimide resin having a repeating unit other than an imide ring such as polyamideimide, polyesterimide, polyetherimide, and maleimide is also used. included.
- the soluble polyimide resin is generally produced by the following two production methods.
- An acid dianhydride component and an isocyanate component are used as monomer components as raw materials, and these monomer components are reacted to obtain a soluble polyimide resin.
- the specific constitution of the (E-1) soluble polyimide resin is not particularly limited, but in the present invention, as the monomer component, an acid dianhydride having a specific structure described later, diamine, or By using isocyanate, a more suitable (D) soluble polyimide resin can be obtained from the photosensitive resin composition according to the present invention.
- the method for producing the (E-1) soluble polyimide resin will be described later.
- the acid dianhydride component is not particularly limited as long as it is an acid dianhydride.
- R 9 represents an ester bond or an ether bond
- R 1Q is a divalent organic group.
- R represents hydrogen, halogen, methoxy or an alkyl group having 11 to 16 carbon atoms
- the diamine component is not particularly limited as long as it is diamine.
- the developer used to express the photosensitive resin has been replaced by an organic solvent-based developer to an aqueous solution-based developer, particularly an alkaline aqueous solution-based developer, due to the effect on the environment, an alkaline aqueous solution-based developer has been used.
- a diamine having one or two carboxyl groups or hydroxyl groups in the molecule for convenience of description, hydroxydiamine and Is preferred.
- a soluble polyimide resin having a carboxy group or a hydroxyl group can be obtained, and can be developed with an alkaline aqueous solution.
- the diamine having two carboxyl groups is not particularly limited as long as it has two carboxyl groups, but specifically, for example, Diaminophthalic acids such as 2,5-diaminoterephthalic acid; 3,3'-diamino_4,4'-dicarboxybiphenyl, 4,4'diamino-3,3'-dicarboxybiphenyl, 4,4'-diamino_2, Carboxybiphenyl compounds such as 2'-dicarboxybiphenyl, 4,4'diamino-2,2 ', 5,5'-tetracarboxybiphenyl; 3,3, diamino-4,4'-dicarboxydiphenylmethane, 2, 2-bis [3-amino-4-carboxyphenyl] propane, 2,2-bis [4-amino-3-carboxyphenyl] propane, 2,2-bis [3-amino-4-carboxypheny
- the COOH equivalent (carboxylic acid equivalent) of the soluble polyimide resin (E-1) of the present invention is preferably 300-3000. This is realized by using the above-mentioned diamine having a carboxyl group as a raw material of the (E-1) soluble polyimide resin.
- the preferred carboxylic acid equivalent of the soluble polyimide resin is 350 to 2500, and more preferably 350 to 2000. If the oleonic acid equivalent force exceeds 3,000, it is difficult to dissolve in a night-time anorecalic developer, and the development time becomes longer.
- the sulfonic acid equivalent here refers to the average molecular weight per carboxylic acid.
- the carboxylic acid equivalent is 200.
- the carboxylic acid equivalent is 500.
- a carboxylic acid equivalent of 300 or less can be realized, but a monomer having a relatively large molecular weight is required to obtain a highly soluble structure. Since it is necessary to use, it is preferably 300 or more.
- two carboxyl groups are present in the molecule. It is desirable to use the diamine having the above. Use of this diamine is desirable because even if another type of diamine is copolymerized, it is possible to achieve a predetermined carboxylic acid equivalent, and physical properties can be easily designed. If the above carboxylic acid equivalent is satisfied, diamine having one carboxyl group such as 3,5-diaminobenzoic acid may be used.
- the diamine having two hydroxyl groups is not particularly limited as long as it has two hydroxyl groups, but specifically, for example, 4,6-diamine Diamino resorcinol, 3,3'-diamino_4,4'-dihydroxybiphenyl, 4,4'-diamino_3,3,1-dihydroxybiphenyl, 4,4'-diamino-1,2,2,1-dihydroxybiphenyl, Hydroxybiphenyl compounds such as 4,4 'diamino-2,2', 5,5'-tetrahydroxybiphenyl; 3,3, -diamino-4,4, -dihydroxydiphenylmethane, 4,4, -diamino — 3,3, —dihydroxydiphenylmethane, 4, 4'-diamino_2, 2'-dihydroxydiphenylmethane, 2,2-bis [3-amino-1-hydroxyphenyl, 4,6-diamine Diamin
- hydroxydiamine a diamine having one hydroxyl group can also be used.
- diaminophenols such as 2,4 diaminophenol and the like can be mentioned.
- the preferred OH equivalent (hydroxyl equivalent) of the soluble polyimide resin (E-1) of the present invention is from 250 to 3000, more preferably (hydroxyl equivalent f, from 300 to 2000, Most preferably, the hydroxyl equivalent is 300 to 1500. If the hydroxyl equivalent exceeds 3,000, it dissolves in an aqueous alkali solution and becomes difficult to develop, and is not preferred.
- the hydroxyl equivalent is an average molecular weight per hydroxyl group. If there are millimoles of hydroxyl groups, the hydroxyl equivalent is 200. For example, in a resin having an average repeating unit of 1000, if there are two hydroxyl groups per average repeating unit, the hydroxyl equivalent is 500.
- a diamine component serving as a raw material of the soluble polyimide resin (E-1) in addition to the above-mentioned hydroxydiamine, a diamine containing a siloxane bond (1-Si-1-1) (for convenience of description, referred to as siloxanediamine) ) May be preferred.
- siloxane diamine specifically, for example, the following general formula (14)
- R represents an alkyl group or a phenyl group having 1 to 12 carbon atoms
- y represents an integer of 114
- z represents an integer of 120.
- siloxanediamine By using such a siloxanediamine, it is possible to improve the solubility of the obtained (E-1) soluble polyimide resin in an organic solvent. Further, the use of the siloxanediamine represented by the general formula (14) is preferable because a soluble polyimide resin having high flexibility and high solubility can be obtained.
- Mechinore group Echiru group, a phenyl group.
- a methyl group particularly preferred is a methyl group.
- z is more preferably an integer of 2-10, particularly preferably an integer of 25.
- y is more preferably an integer of 430, more preferably an integer of 520, and particularly preferably an integer of 8-15. Since the range of the y value has a large effect on the physical properties of the soluble polyimide resin, if the value of y is small, the flexibility of the obtained soluble polyimide resin becomes poor, and if it is too large, the soluble polyimide resin becomes poor. The heat resistance of the resin tends to be impaired.
- the siloxane diamine is more preferably used in an amount of 570 monole%, more preferably 10 to 50 mol%, of all diamine components.
- the diamine component serving as a raw material of the (E-1) soluble polyimide resin is not particularly limited as long as it is diamine, and may be any diamine other than the above-mentioned hydroxydiamine or siloxanediamine. There may be.
- diamines include, for example, p-phenylenediamine, m-phenylenediamine, 4,4′diaminodiphenylmethane, 4,4′diaminodiphenylethane, 4,4′— Diaminodiphenyl ether, 4,4'-diaminodiphenylsulfide, 4,4'-diaminodiphenylsulfone, 1,5-diaminonaphthalene, 3,3-dimethyl-4,4'_diaminobiphenyl, 5—Amino—1— (4, -Aminophenyl) —1,3,3-Trimethylindane, 6—Amino—1— (4, Aminophenyl) —1,3,3-Trimethylindane, 4, 4 diaminobenzarylide, 3,5-diamino-3, _trifluoromethylbenzanilide, 3,5-diamino-4, _ trifluoromethylbenzan
- the (E-1) soluble polyimide resin used in the present invention can be produced by a known method. Specifically, the method for producing (E-1) a soluble polyimide resin (manufacturing method) can be broadly divided into the following two methods depending on the difference in raw materials used.
- the first method is a method in which an acid dianhydride component and a diamine component are used as raw materials (monomer components).
- Polyamide acid (a precursor) is obtained by polycondensing these monomer components.
- This is a two-step method of synthesizing (polyamic acid) and further chemically or thermally dehydrating and cyclizing (imididing).
- the second method is a method in which an acid dianhydride component and an isocyanate component are used as raw materials. This is a one-step method of obtaining a polyimide resin in combination.
- the synthesis (production) method of polyamic acid is a method in which an acid dianhydride component containing at least one acid dianhydride and a diamine component containing at least one diamine are reacted in an organic solvent. is there. At this time, the acid dianhydride component and the diamine component are blended so as to be substantially equimolar. Therefore, when only one type of acid dianhydride and diamine are used, they may be blended so as to be equimolar to each other.When two or more types of dianhydrides and two or more types of diamines are used, the acid dianhydride and diamine may be used.
- the total amount of the anhydride component (the total amount of a plurality of dianhydrides) and the total amount of the diamine component (the total amount of a plurality of diamines) may be blended so as to be substantially equimolar.
- a polyamide acid copolymer can be arbitrarily obtained.
- the method of reacting each monomer component is not particularly limited, but generally, a substantially equimolar amount of the acid dianhydride component and the acid dianhydride component in an organic solvent are used. After dissolving the diamine component, a method is used in which stirring is performed until polymerization is completed while controlling various reaction conditions. By this method, a solution in which polyamic acid is dissolved in an organic solvent (hereinafter, referred to as polyamic acid solution) can be obtained.
- the order of adding the acid dianhydride component and the diamine component may be, for example, (1) dissolving the diamine component in an organic solvent, and then adding the acid dianhydride component; Dissolve the anhydride component in the organic solvent, and then add the diamine component. (3) Dissolve the appropriate amount of the diamine component in the organic solvent by dissolving it.
- a method of adding an acid dianhydride component and adding an amount of a diamine component corresponding to an excess amount of the added acid dianhydride component can be exemplified, but the method is not particularly limited.
- the term ⁇ dissolve '' means not only the state in which the solute is completely dissolved in the solvent, but also the state in which the solute is uniformly dispersed or diffused in the solvent and substantially dissolved. Cases are included.
- the synthesis conditions in the synthesis reaction of the polyamic acid are not particularly limited.
- the condition is such that the polyamic acid can be sufficiently synthesized by polymerizing the monomer component.
- the temperature condition, the reaction time, and the organic solvent used are preferably defined as follows.
- the temperature conditions in the polyamic acid synthesis reaction are not particularly limited as long as the acid dianhydride component and the diamine component can be polymerized, but the upper limit is 80%. It is more preferable that the temperature is not more than 50 ° C. It is more preferable that the temperature is not more than 30 ° C. It is particularly preferable that the temperature is not more than 20 ° C. The lower limit is preferably -20 ° C or more. If the temperature is higher than 80 ° C, the polyamic acid may be decomposed. If the temperature is lower than -20 ° C, the progress of the polymerization reaction is slowed down.
- the reaction time in the polyamic acid synthesis reaction is not particularly limited as long as the polymerization reaction between the acid dianhydride component and the diamine component can be completed.
- an upper limit of 50 hours is sufficient, and may be 12 hours or less.
- the lower limit is more preferably 30 minutes or more, and more preferably 3 hours or more.
- the organic solvent used for the synthesis reaction of the polyamic acid is not particularly limited as long as it is a solvent capable of sufficiently dissolving the polyamic acid, but usually, an organic polar solvent is used.
- the polyamide acid is dissolved well in order to suppress the increase in viscosity when synthesizing the polyamic acid to facilitate stirring, and to facilitate drying of the obtained (E-1) soluble polyimide resin. It is preferable to select an organic polar solvent having a low boiling point as much as possible. This makes it possible to improve the efficiency of the production process of (E-1) soluble polyimide resin.
- organic polar solvent used in the polyamic acid synthesis reaction include, for example, sulfoxide-based solvents such as N, N-dimethylsulfoxide and getylsulfoxide; N, N-dimethylformamide; N, N-dimethylacetamide ⁇ N, N-N-methylethylacetoamide and other acetoamide solvents; N-methyl-2-pyrrolidone, N-Bull-2 —Pyrrolidone solvents such as pyrrolidone; phenol, o-cresol, m-cresol, p_cresol, xylenol, halogenated phenol, catechol Phenolic solvents such as coal; ether solvents such as tetrahydrofuran and dioxane; alcoholic solvents such as methanol, ethanol and butanol; cellosolve solvents such as butyl cellulose solvent; hexamethylphosphamide, y-but
- Each of the above organic polar solvents may be used alone, or two or more of them may be used as an appropriate mixture. Further, if necessary, the above organic polar solvents may be used in combination with an aromatic hydrocarbon such as xylene or toluene.
- the specific conditions of the polyamic acid solution obtained by the above synthesis method are not particularly limited, but the logarithmic viscosity is preferably within the following range.
- the logarithmic viscosity at 30 ° C is within the range of 0.2-4.0 (deciliter Z-gram). More preferably, it is more preferably in the range of 0.3-2. 0 (deciliter Z grams).
- the polyamic acid used in the present invention is obtained by reacting an acid dianhydride component and a diamine component in an organic solvent as described above. This reaction can also be carried out by dissolving the diamine component in an organic solvent or diffusing it in a slurry state in an inert atmosphere such as argon or nitrogen, and then adding the acid dianhydride. Can be.
- the acid dianhydride to be added may be one dissolved in an organic solvent or dispersed in a slurry state, or a solid state.
- the reaction temperature is preferably -20 ° C to 90 ° C, and the reaction time is preferably about 30 minutes to 24 hours.
- the average molecular weight of the polyamic acid used in the present invention is desirably 5,000 to 1,000,000. If the average molecular weight is less than 5,000, the molecular weight of the completed polyimide composition will be low, and even if the polyimide composition is used as a resin as it is, the resin tends to become brittle. On the other hand, when the average molecular weight exceeds 1,000,000, the viscosity of the polyamic acid varnish becomes too high, so that the handling tends to be difficult. Further, it is also possible to mix various kinds of organic additives, one kind of inorganic filler, or various kinds of reinforcing materials with the polyimide composition.
- the (E-1) soluble polyimide resin used in the present invention was obtained by the above synthesis method. It is obtained by imidizing a polyamic acid.
- the specific method of the imidation is not particularly limited, but is performed by, for example, dehydrating and cyclizing the polyamic acid in the polyamic acid solution by a thermal method or a chemical method.
- the thermal method is a method of dehydrating a polyamic acid solution by heat treatment
- the chemical method is a method of dehydrating using a dehydrating agent.
- the thermal method is not particularly limited as long as the polyamic acid is dehydrated and ring-closed by heating.
- a method in which the polyamic acid solution is subjected to a heat treatment to cause an imidization reaction to proceed and simultaneously evaporate the solvent can be mentioned.
- the conditions for the heat treatment are not particularly limited, but the heating temperature is preferably 300 ° C. or less, and the heating time is preferably in the range of about 5 minutes to 10 hours.
- the thermal method include an azeotropic method using an azeotropic solvent. Further, a thermal cyclization method by refluxing toluene, xylene, or the like can also be used.
- Imidization by an azeotropic method using an azeotropic solvent is performed by adding a solvent azeotropic with water, such as toluene'xylene, to a polyamic acid solution, raising the temperature to 170 to 200 ° C, and dehydrating the polyamic acid.
- the reaction can be carried out for about 1 hour to 15 hours while the water generated by ring closure is positively removed from the system.
- the product is precipitated in an alcohol solvent such as methanol, washed with an alcohol solvent if necessary, and dried to obtain a soluble polyimide resin (G-1). it can.
- a polyamic acid solution is cast or coated on a glass plate, a metal plate, or a film-like support such as PET (polyethylene terephthalate).
- G-1 The ability to obtain a soluble polyimide resin can be obtained by performing heat treatment within the range of C-300 ° C.
- the heating time varies depending on the treatment amount and heating temperature of the polyamic acid solution to be subjected to dehydration ring closure. Generally, the heating time is within a range of one minute to five hours after the treatment temperature reaches the maximum temperature. It is preferred to do so.
- (E-1) a soluble polyimide resin can be obtained.
- Examples of the chemical method include a method of performing a dehydration reaction and evaporating an organic solvent by adding a stoichiometric amount or more of a dehydrating agent and a catalyst to the polyamic acid solution. After the reaction is completed, the product is precipitated in an alcohol solvent such as methanol, and, if necessary, washed with an alcohol solvent and dried.
- an alcohol solvent such as methanol
- the dehydrating agent include aliphatic acid anhydrides such as acetic anhydride and propylene anhydride; aromatic acid anhydrides such as benzoic anhydride; N, N'-dicyclohexylcarposimide; Carpoimides such as N, N'-diisopropylcarpoimide; and the like.
- Specific examples of the catalyst include: aliphatic tertiary amines such as triethylamine and trimethylamine; aromatic tertiary amines such as dimethylaniline; pyridine; ⁇ - heterocyclic tertiary amines such as picoline, isoquinoline, imidazole; and the like.
- the conditions of the above chemical method are not particularly limited, but the reaction temperature is preferably 100 ° C or lower, and the reaction time is preferably in the range of about 1 minute to 50 hours. Is preferred.
- the conditions for evaporating the organic solvent are not particularly limited, but the heating temperature is preferably 200 ° C or less, and the heating time is preferably in the range of about 5 minutes to 12 hours. .
- the acid anhydride used as a dehydrating agent may react with the hydroxyl group. It is theoretically preferable to use the minimum amount necessary for imidization.
- the processing conditions in the reduced pressure heating method are not particularly limited as long as the imidization can be performed, but among the processing conditions, the heating conditions and the pressure conditions are preferably defined as follows. . [0162] First, the heating condition may be within the range of 80 to 400 ° C. However, in order to perform imidization and dehydration efficiently, the lower limit is preferably set to 100 ° C or more. It is more preferable that the temperature be not less than ° C.
- the maximum temperature (upper limit) in the heat treatment is preferably equal to or lower than the thermal decomposition temperature of the obtained (E-1) soluble polyimide resin. Therefore, the upper limit of the heating is preferably set within the range of about 250 to 350 ° C, preferably about 180 to 350 ° C, which is the completion temperature of imidization.
- the pressure condition is not particularly limited as long as it is low pressure.
- the pressure be in the range of 0.9 atm. 0.001 0.8 It is more preferable that the pressure be in the range of 0.8 atm. preferable.
- the upper limit of the pressure in the reduced pressure heating method is preferably less than 1 atm, more preferably 0.9 atm or less, more preferably 0.8 atm or less, and even more preferably 0.7 atm or less.
- the lower limit is not particularly limited, but may be at least 0.001 atm.
- the acid dianhydride component which is a raw material for polyamic acid, contains one-sided ring-opened products or both-sided ring-opened products as impurities.
- the ring-opened product can be closed.
- the obtained (E-1) soluble polyimide resin can have a higher molecular weight.
- the method of imidizing the polyamic acid solution may be any method that can be heated and dried under reduced pressure, and for example, a method of heating and drying using a vacuum oven as a batch method.
- the imidization can be carried out by using a heating and drying method using a twin-screw or triple-screw extruder with a decompression device as a continuous method. These methods may be selected in consideration of production volume and the like.
- the twin-screw or triple-screw extruder accompanying the above-mentioned decompression device is a general melt extruder that heats and melts a thermoplastic resin and extrudes it, and has a device that removes the solvent by reducing the pressure. It was made.
- the polyamic acid solution is The mixture is kneaded by an extruder, and the solvent and water generated at the time of imidization are removed, whereby (E-1) a soluble polyimide resin can be obtained.
- the (E-1) soluble polyimide resin of the present invention having a carboxylic acid equivalent of 300 to 3000 or the (E-1) soluble polyimide of the present invention having a hydroxyl equivalent of 250 3000 A resin can be obtained.
- a soluble polyimide resin that is soluble in an aqueous alkali solution can be provided.
- the polyamic acid can be dehydrated and ring-closed by directly putting the polyamic acid solution into a container that has been subjected to a release treatment such as coating with a fluororesin, and heating and drying under reduced pressure.
- a release treatment such as coating with a fluororesin
- the solvent is evaporated during the imidization process.
- the solid is evaporated without evaporating the solvent.
- E-1 There is also a method of obtaining a soluble polyimide resin. Specifically, in this method, a solution of the soluble polyimide resin (E-1) obtained by the above-mentioned thermal method or chemical method is added to a poor solvent to precipitate a polyimide resin, followed by drying. To obtain a solid (E-1) soluble polyimide resin.
- the solvent of the solution of the obtained (E-1) soluble polyimide resin is mixed well, but the (E-1) soluble polyimide resin is hardly soluble.
- the solvent is not particularly limited as long as it is a solvent, but specific examples thereof include acetone, methanol, ethanol, isopropanol, benzene, methylcellosolve (registered trademark), methyl ethynole ketone, and water. be able to.
- the (E-1) soluble polyimide resin is precipitated in the poor solvent, so that not only the solid (E-1) soluble polyimide resin is obtained but also impurities are removed and purified. You can also. Examples of impurities include unreacted monomer components (acid dianhydride and diamine), acetic anhydride and pyridine (in the case of a chemical method), and toluene-xylene (in the case of a thermal method). In the method of precipitation with a poor solvent, these impurities can be removed and purified * dried, so that the quality of the obtained (E-1) soluble polyimide resin can be improved. [0173] ⁇ Second method>
- the second method of synthesizing (producing) a soluble polyimide resin includes an acid dianhydride component containing at least one acid dianhydride and an isocyanate containing at least one diisocyanate. This is a method of reacting components with an organic solvent. At this time, as in the synthesis of the polyamic acid in the first method, the acid dianhydride component and the isocyanate component are blended so as to be substantially equimolar.
- the method of reacting each monomer component is not particularly limited, but is generally substantially the same as in the synthesis of the polyamic acid in an organic solvent. After dissolving a molar amount of the acid dianhydride component and the isocyanate component, stirring is performed until polymerization is completed while controlling various reaction conditions. According to this method, a solution in which polyimide acid is dissolved in an organic solvent (soluble polyimide solution) can be obtained in one step.
- each monomer component is preferably carried out without a catalyst, and it is preferable to use a catalyst for the reaction between the isocyanate component and the active hydrogen compound.
- a catalyst for the reaction between the isocyanate component and the active hydrogen compound.
- the catalyst include tertiary amines, alkali metal compounds, alkaline earth metal compounds, metals such as cobalt, titanium, tin, and zinc, and metalloid compounds.
- the order of adding the acid dianhydride component and the isocyanate component in the second method is not particularly limited, and may be in accordance with the above-described method for synthesizing a polyamic acid.
- the synthesis conditions for synthesizing the (E-1) soluble polyimide resin are not particularly limited, as long as the polyimide component can be sufficiently synthesized by polymerizing the monomer components. .
- the temperature conditions and the organic solvent to be used are preferably defined as follows.
- the temperature conditions in the synthesis reaction of the second method are not particularly limited as long as the acid dianhydride component and the isocyanate component can be polymerized. , 50-220 ° C.
- the reaction time is not particularly limited.
- the organic solvent used in the synthesis reaction of the second method is not particularly limited as long as it is a solvent that can sufficiently dissolve the obtained (E-1) soluble polyimide resin.
- the polyimide is used as in the case of the synthesis of the polyamic acid. It is preferable to select an organic solvent which can dissolve satisfactorily and has as low a boiling point as possible. This makes it possible to improve the efficiency of the production process of the (E-1) soluble polyimide resin.
- Amide-based organic solvents such as acetoamide, N, N-dimethylmethoxyacetoamide, N-methyl_2_pyrrolidone, hexamylphosphamide; Ratatam-based organic solvents such as N-methylcaprolatatam; 1,3-dimethyl-2-imidazo Urea-based organic solvents such as ridinone and tetramethylurea; hydrocarbon-based solvents such as 1,2-dimethoxyethane, 1,2_bis (2-methoxyethyl) ethane and bis [2- (2-methoxyethoxy) ethane]
- Organic solvent bis (2-methoxyethyl) ether, bis [2_ (2-methoxyethoxy) ethyl] ether, 1,3-dio
- the obtained (E-1) soluble polyimide resin can be used as a soluble polyimide solution by dissolving it in a desired organic solvent.
- the organic solvent used for the soluble polyimide solution is not particularly limited as long as it is an organic solvent capable of dissolving the obtained (E-1) soluble polyimide resin.
- the organic polar solvent used in the synthesis reaction of the compound can be mentioned. These organic solvents may be used alone or in an appropriate combination of two or more.
- the concentration of the soluble polyimide solution is not particularly limited, and the photosensitivity obtained is
- the resin composition may be appropriately determined depending on the use (purpose of use), the method of use, and the like of the resin composition, but is usually within the range of 110 to 30% by weight.
- the viscosity of the soluble polyimide solution is not particularly limited, but usually, when the N-methyl-2-pyrrolidone solution is used, the logarithmic viscosity at 30 ° C. is 0.1-2.5 (deciliter Z gram). ), Preferably within the range. If the logarithmic viscosity is within this range, the molecular weight of the (E-1) soluble polyimide resin can be generally regarded as a suitable value.
- the photosensitive resin composition according to the present invention may contain at least the above-mentioned (E-1) soluble polyimide resin power ⁇ species. More than one kind may be contained, and other polyimide resins may be contained.
- the (E-1) soluble polyimide resin may be a polyamic acid that is a precursor before imidization. When preparing a heat-resistant resin composition or a photosensitive resin composition, a reaction occurs when compounding each component. It is preferable to use a soluble polyimide resin.
- the blending amount of the soluble polyimide resin (E-1) is not particularly limited, but the total amount of the photosensitive resin composition is 100% by weight (mass)%.
- the lower limit is preferably 20% by weight or more, more preferably 30% by weight or more.
- the upper limit is preferably 80% by mass or less, more preferably 60% by mass or less.
- the (E-1) soluble polyimide resin used in the present invention preferably has a hydroxyl group or a hydroxyl group.
- An epoxy compound having an epoxy group is added to the soluble polyimide resin having a carboxyl group (for convenience of explanation, the epoxy compound added to the soluble polyimide resin is referred to as a PI epoxy compound) to form a carboxy group of the soluble polyimide resin.
- the epoxy group of the PI epoxy compound reacts with the epoxy group to form an ester bond and a secondary hydroxyl group, for example, as in CO-O-CH_CH (OH) _.
- the (E-1) soluble polyimide resin of the present invention is converted into an epoxy-modified soluble polyimide resin (hereinafter, referred to as an epoxy-modified polyimide resin) by reacting a carboxyl group and an epoxy group of the soluble polyimide resin. It is desirable.
- the epoxy-modified polyimide resin is obtained by modifying (E-1) a soluble polyimide resin having a carboxylic acid equivalent of 300 to 3000 with a PI epoxy compound having an epoxy group to obtain an epoxy-modified polyimide resin. Desired Les ,.
- the preferred carboxylic acid equivalent of the (E-1) soluble polyimide resin as a raw material of the epoxy-modified polyimide resin is 350 to 2500, and more preferably 350 to 2000. If the oleonic acid equivalent force exceeds 3,000, it dissolves in an aqueous / night-based alkali developing solution, and the developing time becomes longer.
- a carboxylic acid equivalent of 300 or less can be achieved by using a diamine containing two or more carboxylic acid groups, but a monomer having a relatively high molecular weight must be used to obtain a highly soluble structure. It is difficult to make it less than 300.
- diamine having two or more carboxyl groups in the molecule described above.
- this diamine it is possible to copolymerize another type of diamine when realizing a predetermined rubonic acid equivalent, which is desirable because the design of physical properties becomes easy.
- the preferred hydroxyl group equivalent of the epoxy-modified polyimide resin is 250 to 3000, the more preferred hydroxyl group equivalent is 300 to 2000, and the most preferred hydroxyl group equivalent is 300 to 1500. If the hydroxyl equivalent is more than 3,000, it is difficult to dissolve in an aqueous alkali solution and development becomes difficult. On the other hand, if the hydroxyl group equivalent is less than 250, heat resistance is lowered and moisture absorption is liable to occur due to the large number of water-absorbing hydroxyl groups, which is not preferable.
- the epoxy-modified polyimide resin is obtained by dissolving the above-mentioned ( ⁇ -1) soluble polyimide resin having a carboxyl group in an organic solvent, and reacting the ⁇ epoxy compound with the carboxy group of the ( ⁇ ⁇ ⁇ ⁇ ⁇ -1) soluble polyimide resin. Is obtained.
- the organic solvent used in the reaction does not react with the epoxy group and has a carboxyl group.
- sulfoxide-based solvents such as dimethylsulfoxide and getylsulfoxide
- formamide-based solvents such as N, N-dimethylformamide and N, N-getylformamide
- Acetamide-based solvents such as N-getylacetamide
- pyrrolidone-based solvents such as N-methyl-2-pyrrolidone and N-butyl-12-pyrrolidone
- ether-based solvents such as tetrahydrofuran and dioxane
- Phenolic solvents cellosolves such as butyl cellulose, hexmethylphosphoramide; ⁇ -butyrolataton; and the like, and aromatic
- solvents may be used alone or as a mixture of two or more.
- the epoxy-modified polyimide resin used in the present invention is used after removing the solvent. Therefore, it is also important to select a solvent having as low a boiling point as possible.
- Preferred epoxy compounds include an epoxy compound having two or more epoxy groups and an epoxy compound having an epoxy group and an unsaturated double bond or an unsaturated triple bond.
- the epoxy compound having two or more epoxy groups refers to a compound having two or more epoxy groups in a molecule.
- a bisphenol resin such as Epicoat 828 (trade name, manufactured by Yuka Shell); an onole socresol novolak resin such as 180S65 (trade name, manufactured by Yuka Shell); 157S70 (trade name, oil) Bisphenol A novolak resin such as 1032H60 (trade name, manufactured by Yuka Shell Co.); naphthalenea such as ESN375 (trade name, manufactured by Nippon Steel Chemical Co., Ltd.) Ralkynovolak resin; Tetraphenylroletan 1031S (trade name, manufactured by Yuka Shell Co., Ltd.), YG D414S (trade name, Toto Kasei), trishydroxyphenylmethane EPPN502H (trade name, Nippon Kayaku), special bisphenol VG3101L Glycidinoleamine type trees such as (trade name, Mitsui Chemicals),
- the epoxy compound having an epoxy group and an unsaturated double bond is a compound having an epoxy group and an unsaturated double bond in a molecule.
- R 14 represents hydrogen or a methyl group.
- These PI epoxy conjugates can be used alone or in combination, or in combination of two or more.
- the epoxy compound having an epoxy group and an unsaturated triple bond refers to a compound having an epoxy group and an unsaturated triple bond in a molecule. Specific examples include, but are not limited to, propagildaricidyl ether, glycidyl propiolate, ethur glycidyl ether, and the like. These PI epoxy conjugates may be used alone or in combination of two or more.
- the reaction temperature is preferably from 40 ° C to 130 ° C.
- the reaction is preferably carried out at such a temperature that the unsaturated double bond or unsaturated triple bond is not decomposed or crosslinked by heat.
- the reaction is preferably performed at 40 ° C or higher and 100 ° C or lower, more preferably at 50 ° C or higher and 90 ° C or lower.
- the reaction time is preferably from about several minutes to about 8 hours.
- the epoxy-modified polyimide resin solution may be used by mixing a thermoplastic resin such as polyester, polyamide, polyurethane, or polycarbonate, or may be used in combination with an epoxy resin, an acrylic resin, bismaleimide, and bisarylna.
- a thermosetting resin such as diimide, phenol resin, and cyanate resin may be mixed and used. Further, various coupling agents may be mixed.
- a curing agent generally used for an epoxy resin is mixed with the epoxy-modified polyimide resin used in the present invention, a cured product having good physical properties may be obtained in some cases. This tendency is particularly remarkable in an epoxy-modified polyimide resin obtained by reacting a (E-1) soluble polyimide resin having a carboxyl group with a PI epoxy compound having two or more epoxy groups.
- an amine type, an imidazole type, an acid anhydride type, an acid type and the like are shown as typical examples, but they are not particularly limited.
- the photosensitive resin composition according to the present invention may contain (F) other components in addition to the double bond phosphazene compound, (E-1) soluble polyimide resin, and the like.
- (F) Other components are appropriately selected depending on the use of the obtained photosensitive resin composition, and are not particularly limited. Specifically, for example, (F-1) Photoinitiator, (F-2) sensitizer, (F-3) photopolymerization aid, (F-4) compound having a carbon-carbon double bond, (F-5) epoxy resin for composition, F-6) Examples include inorganic fillers.
- (F-1) a photoreaction initiator in order to impart photosensitivity.
- (F-1) An example of a compound which can be used as a photoreaction initiator is a compound which generates radicals by light having a long wavelength of about g-line by light. The following general formula (16)
- R 13 , R ID and R 17 are CH—, CH (CH) one, CH (CH) one, (CH) C one, CH C1 —, CH (CH)-CH C1 one, or H C1 is shown.
- R, R 19 and R 2 are CH-methoxy, ethoxy, CH (CH)-, C
- the acylphosphinoxide compound represented by the general formula (16) is preferably used as a photoreaction initiator (F1) because it generates two radicals.
- the acinolephosphinoxide compound represented by is more preferably used because it generates four radicals by cleavage.
- radical initiator various peroxides can be used in combination with the following (F-2) sensitizer.
- F-2) sensitizer 3,3,4,4, -tetra (t_butylperoxycarbonyl) Combinations of nzophenone and (F-2) sensitizers are particularly preferred.
- the photosensitive resin composition according to the present invention may contain (F-2) a sensitizer in order to achieve a practically usable photosensitive sensitivity.
- (F-2) sensitizers include, specifically, mihiraketone, bis-1,4'-decylaminobenzozophenone, benzophenone, camphorquinone, benzyl, 4,4'-dimethylaminobenzyl, 3 , 5_Bis (Getylaminobenzylidene) _N_Methyl_4-piperidone, 3,5_Bis (dimethylaminobenzylidene) -1-N-methinole 4-Piperidone, 3,5-bis (getyl) Aminobenzylidene) —N-ethyl-4-piperidone, 3,3,3-carbonylbis (7-ethylpyramino) coumarin, riboflavin tetrabutylate, 2-methyl_1_ [4_ (methylthio) pheny
- the (F-2) sensitizer is preferably blended in an amount of 0.1 to 50 parts by weight with respect to 100 parts by weight of the phosphazene compound of the present invention, in an amount of 0.3 to 20 parts by weight. Can be blended with Preferred. If the amount is outside the range of 0.1 to 50 parts by weight, the sensitizing effect may not be obtained or the imageability may be adversely affected.
- the sensitizer (F-2) one type of compound may be used, or a mixture of several types may be used.
- the photosensitive resin composition according to the present invention may contain (F-3) a photopolymerization aid in order to achieve a practically usable photosensitive sensitivity.
- a photopolymerization aid include, for example, 4-dimethylaminoethyl benzoate, 4-dimethylaminoethyl benzoate, 4-dimethylaminopropyl benzoate, 4-dimethylamino Propylbenzoate, 4-dimethylaminoisoamylbenzoate, N-phenylglycine, N-methynole-N-phenylglycine, N- (4-cyanophenyl) glycine, 4-dimethylaminobenzonitrile, ethylene glycol dithioglyco Rate, ethylene glycol di (3-mercaptopropionate), trimethylolpropanepropionate glycolate, trimethylolpropanetri (3_mercaptopropionate), pentaerythritol tetrathio
- the photopolymerization aid is preferably blended in a range of 0.1 to 50 parts by weight with respect to 100 parts by weight of the phosphazene compound of the present invention, in a range of 0.3 to 20 parts by weight. More preferably, it is blended within. If the amount is out of the range of 0.150 parts by weight, the intended sensitizing effect may not be obtained, or the developability may be adversely affected. In addition, light As the polymerization aid, one kind of compound may be used, or several kinds may be mixed.
- the photosensitive resin composition according to the present invention further comprises (F-4) a carbon-carbon double bond in addition to the above-described sensitizer and photopolymerization aid in order to achieve a practically usable photosensitive sensitivity.
- (F-4) copolymer monomer has a carbon-carbon double bond (unsaturated double bond) in the molecule, and thus facilitates photopolymerization.
- the cured resin (eg, photosensitive dry film resist) after curing the photosensitive resin composition according to the present invention can exhibit flexibility
- (F-4) As polymerization monomers, bisphenol F EO modified diatalylate, bisphenol EO modified diatalylate, bisphenol SE ⁇ modified diatalylate, bisphenol F EO modified dimeta acrylate, bis phenol AE modified dimetha acrylate, bis phenol SE modified dimeta It is preferable to use atalylate.
- the number of the repeating units of E ⁇ to be modified contained in one molecule of diatalylate or meta-atalylate is preferably in the range of 2-50, more preferably in the range of 2-40.
- the repeating unit of EO When the repeating unit of EO is in the preferred range, the solubility of the photosensitive resin composition in an aqueous alkali solution is improved, and the development time is shortened. When the number of repeating units of the modified EO is 50 or more, heat resistance tends to deteriorate, which is not preferable.
- the (F-4) comonomer is preferably blended in an amount of 1 to 200 parts by weight, based on 100 parts by weight of the phosphazene conjugate of the present invention, in an amount of 3 to 150 parts by weight. It is more preferable to mix within the range. If the amount is out of the range of 1,200 parts by weight, the intended effect may not be obtained, or the developability may be adversely affected.
- the (F-4) copolymerization monomer one kind of compound may be used, or a mixture of several kinds of compounds may be used.
- the photosensitive resin composition according to the present invention may contain an epoxy resin in order to improve its adhesiveness (for convenience of explanation, the epoxy resin contained in the photosensitive resin composition may be used).
- Epoxy resin for the composition Epoxy resin for the composition.
- the epoxy resin for the composition is not particularly limited as long as it is a compound having an epoxy group in the molecule.
- Epikote 828 (trade name, manufactured by Yuka Shell Co., Ltd.) and the like Bisphenol resin, 180S65 (trade name, Yuka Shell Co., Ltd.) and other onoleso-cresol novolak resin, 157S70 (trade name, oil Novolak resin such as bisphenol A novolak resin such as 1032H60 (trade name, manufactured by Yuka Shell Co., Ltd.), naphthalene resin such as ESN375 (trade name, manufactured by Nippon Steel Chemical Co., Ltd.) Ralquinovolak resin, Tetraphenylolethane 1031 S (trade name, manufactured by Yuka Shell Co., Ltd.), YGD414S (trade name, Toto Kasei), trishydroxyphenylmethane EPPN502H (trade name, Nippon Kayaku), special bisphenol VG3101L ( Glycidylamine-type resins such as trade name, Mitsui Chemicals, specialty naphthol NC7000 (trade name, Nippon Kayaku), special bisphenol
- an epoxy resin having an epoxy group and an unsaturated double bond or an unsaturated triple bond in a molecule may be mixed.
- the epoxy resin include, for example, allyl glycidyl ether, glycidyl atalylate, dalicydyl methacrylate, glycidyl butyl ether, propargyl dalicidyl ether, glycidyl propiolate, ethinyl dalicidyl ether, and the like. can do.
- the epoxy resin for a composition can also be used as a thermosetting resin.
- the epoxy resin for a composition when mixed with the photosensitive resin composition, the epoxy resin for a composition not only improves the adhesiveness of the photosensitive resin composition but also serves as a thermosetting agent. It is preferable to mix an epoxy resin for a composition as a thermosetting resin with the photosensitive resin composition because a cured resin having excellent physical properties can be obtained.
- the thermosetting resin used here may be any type of thermosetting resin such as an amine type, an imidazole type, an acid anhydride type, and an acid type as long as it is a curing agent made of an epoxy resin. Various coupling agents may be mixed.
- the photosensitive resin composition according to the present invention may further contain an inorganic filler such as talc, myric acid, silica, alumina, barium sulfate, magnesium oxide, or the like, or may use cyanine green or cyanine blue as a coloring pigment. You can also. If necessary, a thixotropic agent, an antifoaming agent, a leveling agent, an ultraviolet absorber, an antioxidant, and a polymerization inhibitor can be used.
- an inorganic filler such as talc, myric acid, silica, alumina, barium sulfate, magnesium oxide, or the like, or may use cyanine green or cyanine blue as a coloring pigment. You can also. If necessary, a thixotropic agent, an antifoaming agent, a leveling agent, an ultraviolet absorber, an antioxidant, and a polymerization inhibitor can be used.
- the photosensitive resin composition includes a thermosetting resin other than the epoxy resin for the composition. May be mixed. This case is also preferable because a photosensitive resin composition having good physical properties can be obtained.
- the thermosetting resin used here includes bismaleimide, bisarylnadiimide, phenol resin, cyanate resin and the like.
- the photosensitive resin composition according to the present invention comprises, in addition to the above-described photosensitive resin composition containing at least the phosphazene compound and the (D) soluble polyimide resin, a phosphazene compound, and (F-1) a photoreaction initiator. It may be a photosensitive resin composition containing at least In this case, in addition to the phosphazene compound and the (F-1) photoinitiator, another resin other than the (D) soluble polyimide resin may be contained.
- a resin having a carboxy group for convenience of description, referred to as a carboxyl group-containing resin
- a resin having a hydroxyl group for convenience of description, (Referred to as a hydroxyl group-containing resin).
- the weight average molecular weight of the carboxyl group-containing resin or the hydroxyl group-containing resin is preferably in the range of 10,000 to 300,000, more preferably in the range of 10,000 to 150,000, more preferably in the range of 20,000 to 100,000. It is even more preferable.
- the photosensitive film tends to become brittle when the photosensitive resin composition is used as a photosensitive resin film. Conversely, when the weight average molecular weight exceeds 300,000, the photosensitive resin composition is difficult to be developed, and the resolution tends to be reduced.
- Examples of the carboxyl group-containing resin and the hydroxyl group-containing resin include the following, but are not limited thereto.
- Examples of the carboxyl group-containing resin include, for example, an acrylic copolymer having a (meth) acrylic compound as a main component and copolymerized with an ethylenically unsaturated carboxylic acid. Further, in addition to the above-mentioned ethylenically unsaturated carboxylic acid, an acrylic copolymer obtained by copolymerizing another monomer copolymerizable with a (meth) acrylic compound may be used.
- Examples of the above (meth) acrylic compound include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, and hexyl (meth) acrylate. Examples thereof include acrylate, 2-ethylhexyl (meth) acrylate, cyclohexyl (meth) acrylate, benzyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, and hydroxyethyl. These (meth) acrylic compounds may be used alone or in a combination of two or more.
- Examples of the ethylenically unsaturated carboxylic acid include monocarboxylic acids such as acrylic acid, methacrylic acid, and crotonic acid; dicarboxylic acids such as maleic acid and fumaric acid; and anhydrous and half esters thereof. Can be mentioned. These ethylenically unsaturated carboxylic acids may be used alone or in combination of two or more.
- Other monomers include, for example, (meth) acrylamide, 2,2,3,3-tetrafluoropropyl pill (meth) acrylamide, (meth) acrylamide-based compounds such as diacetone acrylamide, etc .; Compounds having a biel group such as alkyl butyl ether and (meth) acrylonitrile; styrene, ⁇ -methylstyrene, tetrahydrofurfuryl (meth) acrylate, getylaminoethyl (meth) acrylate, 2, 2, 2- Trifluoroethyl (meta) acrylate can be exemplified.
- One of these monomers may be used alone, or two or more thereof may be used in combination.
- an acrylic copolymer having a carboxy group is obtained by copolymerizing the above (meth) acrylic compound with an ethylenically unsaturated carboxylic acid or another monomer
- a (meth) acrylic compound is used.
- the polymerization ratio of the compound, ethylenically unsaturated carboxylic acid, and other monomers is not particularly limited, but the content of the (meth) acrylic compound component is preferably 15 to 85% by weight. More preferably, it is 30 to 80% by weight. Further, the content of the ethylenically unsaturated carboxylic acid component is more preferably 15 to 85% by weight, more preferably 20 70% by weight.
- the content of other monomer components is preferably from 0 to 70% by weight.
- hydroxyl group-containing resin examples include a phenol resin and a resorcinol resin.
- carboxyl group-containing resin and hydroxyl group-containing resin other resins such as polyester resin, polyamide resin, polyimide resin, polyurethane resin, and epoxy resin can be used.
- Mers can also be used.
- the photosensitive resin composition of the present invention may contain a suitable organic solvent. If dissolved in a suitable organic solvent, it can be used in the form of a solution (varnish), which is convenient for coating and drying. As the solvent used in this case, a non-protonic polar solvent is preferable from the viewpoint of solubility.
- the organic solvent may be a solvent in which the solvent used in the synthesis reaction of the phosphazene compound is left as it is, or may be a newly added one to the isolated phosphazene conjugate. Further, in order to improve the coating properties, solvents such as tonolenene, xylene, ethynoleketone, methoxybenzene, and cyclopentanone do not adversely affect the solubility.
- ether solvents such as dioxane, dioxolan, and tetrahydrofuran
- halogen solvents such as chloroform and methylene chloride.
- a photosensitive resin composition solution can be obtained by dissolving the photosensitive resin composition in an organic solvent.
- the photosensitive resin composition solution if appropriate, epoxy Thermosetting resins such as resins and acrylic resins, and thermoplastic resins such as polyester, polyamide, polyurethane, and polycarbonate may be mixed.
- the photosensitive resin composition according to the present invention can be produced in a solution state in addition to being dissolved in an organic solvent.
- the solvent include dimethylsulfoxide, hexamylphosphamide, dimethylacetamide, dimethylformamide, N-methyl-2-pyrrolidone, gamma-butyrolataton, diglyme, butoxyethanol, propylene glycol methyl ester.
- the solvent include, but are not limited to, tyl acetate (PGMEA), toluene, xylene, dioxolan, tetrahydrofuran, methylethylketone, and isopropyl alcohol.
- the above-mentioned solvents may be used as a mixture of two or more solvents in order to control the uniformity and thickness of the thin film made of the photosensitive resin composition and to improve the adhesive strength.
- a solution of the photosensitive resin composition is prepared so that the concentration of the photosensitive resin composition is in the range of 0.1 to 70% by weight.
- the method of using the photosensitive resin composition according to the present invention is not particularly limited, but specific examples include a photosensitive resin finolem formed using the above photosensitive resin composition. That can be S.
- the photosensitive resin film can be suitably used, for example, as an adhesive sheet for a printed wiring board, a photosensitive coverlay film, an insulating circuit protective film for a printed wiring board, or a substrate for a printed wiring board.
- a photosensitive resin film can be produced by drying the solution of the photosensitive resin composition to form a film-like thin film.
- the formation of the thin film made of the photosensitive resin composition can be performed by any of spin coating, bar coating, and doctor blade methods widely used in the electronics industry.
- a solution of the photosensitive resin composition is applied onto a support such as a metal or PET, dried, and then peeled off from the support to form a single film. It can be handled or can be used as it is laminated on a film such as PET .
- the temperature for drying the solution of the photosensitive resin composition is preferably in the range of 40 ° C to 180 ° C, and more preferably in the range of 40 ° C to 150 ° C. If the drying temperature is extremely low, the drying time will be prolonged.If the drying temperature is extremely high, heat will cause cross-linking or thermal decomposition of the epoxy group or unsaturated double bond / unsaturated triple bond. It is not desirable because it will be lost.
- the above-mentioned photosensitive resin film can be used, for example, as a photosensitive coverlay film for FPC.
- a photosensitive coverlay film for FPC usually, in the process of manufacturing FPC, long-time film is continuously laminated with adhesive-coated 'dry' copper foil, so that productivity is good.
- the holes and windows in the photosensitive coverlay film before bonding are made to match the joints with the terminals and components of the circuit. Almost all of the alignment to match the terminal part and the joint with the component needs to be done by hand, and since it has a small peak size and is bonded in batches, workability and positional accuracy are poor and costly Was something.
- the photosensitive resin film according to the present invention can be laminated at a temperature of 150 ° C. or less, and can be directly laminated on a printed circuit board without using an adhesive.
- the laminating temperature is preferably low, preferably about 130 ° C. or lower, more preferably 110 ° C. or lower.
- the photosensitive resin film of the present invention can be formed by exposing and developing after laminating the FPC and the photosensitive resin film, a hole for bonding to the FPC terminal portion can be formed. And workability problems can be improved. Therefore, the photosensitive resin film of the present invention can be suitably used as a photosensitive coverlay film of FPC.
- the cured photosensitive resin film has a high heat resistance temperature.
- the thermal decomposition temperature of the cured photosensitive resin film alone is preferably 300 ° C. or higher, more preferably 320 ° C. or higher, and even more preferably 340 ° C. or higher.
- Copper is mainly used for the conductor layer of the FPC. When copper is exposed to a temperature exceeding 200 ° C, the crystal structure of copper gradually changes and the strength decreases. Therefore, setting the curing temperature to 2 It is necessary to be less than oo ° c.
- This step is a step of protecting, with a photosensitive resin film, the conductor surface of the FPC on which a circuit is formed in advance by a conductor such as a copper foil.
- the FPC and the photosensitive resin film are bonded together by heat lamination, hot press or hot vacuum lamination.
- the bonding is preferably performed at a temperature at which the epoxy group or unsaturated double bond / unsaturated triple bond is not crosslinked or thermally decomposed due to heat.
- the temperature is preferably 180 ° C or less, more preferably 150 ° C or less, and further preferably 130 ° C or less.
- the unexposed portion is dissolved and removed with a developer to develop the thin film.
- This developing step may be performed using a conventional positive type photoresist current rubber apparatus.
- Exposure can be performed using an exposure device that irradiates visible light or ultraviolet light with a wavelength of 200 to 500 nm.
- an exposure device equipped with a filter that exhibits a monochromatic wavelength is used. Is more advantageous in terms of Further, the present invention is not limited to a specific equipment or an exposure equipment.
- the exposure time can be changed according to the experimental conditions.
- the exposure time can be changed from 5 to 300 seconds, and the exposure time can be shortened by using a more powerful exposure apparatus. it can.
- the exposure energy is quantified by an energy meter, and the resolving power is confirmed by depth and width using a profile meter.
- the developer a basic solution can be used.
- the developer may be an aqueous solution exhibiting basicity, a solution in which one kind of basic compound is dissolved, or a solution in which two or more kinds of basic compounds are dissolved.
- the basic solution is usually a solution in which a basic compound is dissolved in water.
- the concentration of the basic compound in the basic solution is set to 0.1 to 30% by weight, because it is preferable that the concentration of the basic compound be 0.1 to 50% by weight / weight on the supporting substrate. Is more preferable.
- a developing solution is used for methanol, ethanol, propanol, isopropyl alcohol, N-methyl-2-pyrrolidone, N, N-dimethylformamide, N, N-dimethyla.
- Examples of the basic compound include hydroxides or carbonates of alkali metals, alkaline earth metals or ammonium ions, and amine compounds.
- the pattern formed by the development is then washed with a rinsing liquid to remove the developer.
- a rinsing liquid include those having good miscibility with a developer, methanol, ethanol, isopropyl alcohol, and water.
- the resin pattern made of the photosensitive resin film of the present invention can have high resolution. to be tied up.
- This resin pattern has high heat resistance and excellent mechanical properties.
- the photosensitive resin film of the present invention can be used to produce a photosensitive coverlay film for FPC.
- the photosensitive resin composition according to the present embodiment contains at least (G) a polyimide resin and (H) a phosphazene compound, and further contains (I) a (meth) acrylic compound.
- (G-1) a soluble polyimide resin having a carboxyl group and / or a hydroxyl group and being soluble in an organic solvent is used as the (G) polyimide resin, and a phenolic hydroxyl group is used as the (H) phosphazene compound.
- G-2 a bridged phenoxyphosphazene compound obtained by crosslinking the (H-1) phenoxyphosphazene conjugate. Is used.
- the photosensitive resin composition according to the present embodiment uses a (G-1) soluble polyimide resin having a carboxyl group and Z or a hydroxyl group. This makes it possible to impart heat resistance, bending resistance, excellent mechanical properties, electrical insulation, and chemical resistance to a cured resin (for example, a photosensitive resin film) obtained by curing the photosensitive resin composition.
- a cured resin for example, a photosensitive resin film
- ⁇ other components may be contained as necessary.
- components for example, components that impart various physical properties such as adhesiveness, flame retardancy, heat resistance, and bending resistance to the photosensitive resin composition can be contained.
- the photosensitive resin film according to the present embodiment is formed by using the photosensitive resin composition according to the present embodiment.
- each component will be described in detail.
- the polyimide resin according to the present embodiment at least the above-mentioned (G-1) soluble polyimide resin is used.
- the (G-1) soluble polyimide resin referred to in the present embodiment refers to a resin having a carboxy group and a Z or hydroxyl group in a side chain and showing solubility in an organic solvent, and is referred to as “soluble polyimide resin”.
- the term is a convenient name for describing such a polyimide resin.
- the (G-1) soluble polyimide resin is not particularly limited as long as it is a polyimide resin as defined above, but is preferably an aliphatic compound component, an alicyclic compound component, and bis It has a structure including an organic solvent solubility-imparting component selected from at least one of alkylene oxide adduct components of a phenol compound.
- the term ⁇ soluble '' in the (G-1) soluble polyimide resin indicates that the soluble polyimide resin is soluble in an organic solvent, and more specifically, in the present invention, It shows solubility of 1 ⁇ Og or more at 20 ° C.
- the (G-1) soluble polyimide resin of the present invention only needs to exhibit a solubility of 1.Og or more at 20 ° C. in 100 g of an organic solvent, but it has a solubility of 5.Og or more at 20 ° C. It is more desirable to show solubility if it shows solubility of 10 g or more at 20 ° C.
- organic solvent lOOg When the solubility at 20 ° C in organic solvent lOOg is less than lg, when forming the photosensitive resin film using the photosensitive resin composition, the photosensitive resin film must be formed to the desired thickness. Tends to be difficult.
- organic solvent include, but are not particularly limited to, formamide solvents such as N, N-dimethynorenolemamide, N, N-getylformamide, 1,4-dioxane, and 1,3-dioxolane.
- ether solvents such as tetrahydrofuran. Wear.
- the weight average molecular weight of the soluble polyimide resin (G-1) is preferably 5000 to 200,000, more preferably 10,000 to 100,000.
- the weight average molecular weight is less than 5,000, the photosensitive resin film prepared using the photosensitive resin composition of the present invention is likely to be sticky or to be further deteriorated in bending resistance of the cured photosensitive resin film. Tend.
- the weight average molecular weight is more than 200,000, the viscosity of the solution of the soluble polyimide resin (G-1) becomes too high, which tends to make handling difficult, and the developability of the formed photosensitive resin film is reduced. Tend to do so.
- the weight average molecular weight can be measured by size exclusion chromatography (SEC), for example, product number HLC 8220GPC manufactured by Tosoh Corporation.
- the hydroxyl group of the soluble polyimide resin (G-1) is preferably a phenolic hydroxyl group. Further, the weight average molecular weight (hereinafter referred to as acid equivalent) per carboxyl group and / or hydroxyl group of the soluble polyimide resin (G-1) is preferably 7000 or less, more preferably 5000 or less. Most preferably it is less than 3000. If the acid equivalent exceeds 7000, aqueous development of a photosensitive resin film prepared using the photosensitive resin composition of the present invention tends to be difficult.
- the acid equivalent of the (G-1) soluble polyimide resin can be calculated from the composition of the (G-1) soluble polyimide resin.
- the (G-1) soluble polyimide resin of the present invention includes at least one or more unsaturated dihydric compounds selected from the group consisting of an acrylic group, a metathalyl group, a butyl group, and an aryl group. It is preferably a (G-1) soluble polyimide resin having a double bond in the side chain.
- a photosensitive group such as an acryl group, a methacryl group, a butyl group, or an aryl group in the side chain, the curability of the exposed portion can be improved when the photosensitive resin composition is exposed.
- the (G-1) soluble polyimide resin uses an acid dianhydride component and a diamine component as monomer components as raw materials, and reacts these monomer components to polymerize polyamic acid (polyamic acid). I do. Then, by imidizing this, a soluble polyimide resin can be obtained.
- the specific constitution of the above (G-1) soluble polyimide resin Is not particularly limited, but, as in Embodiment 1, as the monomer component
- the acid dianhydride component is particularly limited as long as it is a carboxylic dianhydride having a carboxyl group. is not. Further, from the viewpoint of improving the heat resistance of the photosensitive resin composition, it is preferable to use a carboxylic dianhydride having 114 aromatic rings or an alicyclic carboxylic dianhydride. Further, from the viewpoint of improving solubility in an organic solvent, it is preferable to use a carboxylic dianhydride having two or more aromatic rings as at least a part of the carboxylic dianhydride having four or more aromatic rings. More preferred to use at least as part.
- the acid dianhydride component include, for example, fatty acids such as butanetetracarboxylic dianhydride and 1,2,3,4-cyclobutanetetracarboxylic dianhydride.
- the diamine component is not particularly limited, but from the viewpoint of aqueous developability, one molecule is used. It is preferable to use a diamine having at least one carboxy group and Z or a hydroxyl group (referred to as hydroxydiamine for convenience of explanation) as at least a part of the raw material. From the viewpoint of heat resistance and chemical resistance, it is preferable to use an aromatic diamine having one or more aromatic rings in one molecule as at least a part of the raw material.
- hydroxy aromatic diamine an aromatic diamine having one or more carboxy group and Z or hydroxyl group in one molecule
- the photosensitive It is more preferable because heat resistance and aqueous developing property can be imparted to a photosensitive resin film formed using the resin composition.
- the hydroxyaromatic diamine is not particularly limited as long as it is an aromatic diamine having one or more carboxyl groups and / or hydroxyl groups in one molecule, but particularly, the following general formula ( 19)
- R 21 is a hydroxyl group or a carboxy group
- R 22 and R 23 may be the same or different, but each represents a hydrogen atom, an alkyl group having 11 to 19 carbon atoms, 2— 10 alkoxy groups, or CO ⁇ R 24 (R 24 represents an alkyl group having 11 to 19 carbon atoms), and ⁇ , ⁇ , _S—, —SO—, —C (CH) 1 and — CH-, -C (CH) (CH)-, or C (CF
- hydroxy aromatic diamine represented by the following as a part of the raw material of the (G-1) soluble polyimide resin.
- the hydroxyaromatic diamine having a carboxyl group is not particularly limited as long as it is an aromatic diamine containing a carboxy group, but the following may be exemplified. Can be.
- diaminobenzoic acid such as 3,5-diaminobenzoic acid; 3,3, -diamino-4,4, -dicarboxybiphenyl, 4,4, -diamino-2,2 ', 5,5'-tetracarboxy
- Carboxybiphenyl compounds such as biphenyl; carboxydiphenylalkanes such as 4,4'-diamino-3,3'-dicarboxydiphenylmethane and 3,3'-diamino-4,4'-dicarboxydiphenylmethane
- Carboxydiphenyl ether compounds such as 4,4, diamino-2,2,5,5, -tetracarboxydiphenyl ether; dicarboxylic acids such as 3,3'-diamino-4,4'dicarboxydiphenylsulfone Bis (carboxyphenoxy) biphenyl compounds such as 2,2-bis [4- (4-amino-3-car
- Particularly preferred hydroxyaromatic diamines having a carboxyl group include the following general formula group (20)
- the hydroxyaromatic diamine having a hydroxyl group is not particularly limited as long as it is an aromatic diamine having a hydroxyl group, and examples thereof include the following. .
- Particularly preferred hydroxyaromatic diamines having a hydroxyl group include the following general formula group (21)
- the above hydroxyaromatic diamines may be used alone or in an appropriate combination of two or more.
- the acid equivalent of the obtained (G-1) soluble polyimide resin is reduced, and the developability in an alkaline aqueous solution can be improved.
- diamines include, for example, bis [4_ (3-aminophenoxy) phenyl] sulfone, reactive silicones containing amino groups at both ends of a siloxane structure (hereinafter referred to as silicondiamine), [bis (4-amino- 3_ carboxy) [Enyl] methane and the like.
- silicondiamine reactive silicones containing amino groups at both ends of a siloxane structure
- silicon diamines described above can be used alone or in combination of two or more.
- the (G-1) soluble polyimide resin used in the present invention can be produced by a known method. Specifically, it can be produced by the same method as the first method for producing the soluble polyimide resin (E-1) in the first embodiment. That is, an acid dianhydride component and a diamine component are used as raw materials (monomer components), and these monomer components are polycondensed to synthesize a polyamic acid (polyamic acid) as a precursor, which is further chemically or chemically synthesized. This is a two-stage method involving thermal dehydration cyclization (imidization). The same method as the first method can be used for the synthesis method and imidation method of these polyamic acids.
- the diamine component for example, a diamine solution in which the diamine is dissolved in an organic solvent or dispersed in a slurry in an inert atmosphere such as argon or nitrogen can be used.
- the acid dianhydride component for example, a state in which the carboxylic acid dianhydride is dissolved in an organic solvent or dispersed in a slurry state, or a solid state can be used.
- the (G-1) soluble polyimide resin according to the present invention is a soluble polyimide resin having at least one or more unsaturated double bonds selected from the group consisting of an acryl group, a methacryl group, a butyl group, and an aryl group in a side chain. It is preferably a polyimide resin (for convenience of description, referred to as a double bond polyimide resin). Since the (G-1) soluble polyimide resin has an unsaturated double bond, a cross-linking reaction between the (G-1) soluble polyimide resin and the (I) (meth) acrylic compound is performed in the exposure treatment described below. Or (G-1) a soluble polyimide resin can be cross-linked with each other.
- the above-mentioned double bond polyimide resin can be obtained by modifying the above-mentioned (G-1) soluble polyimide resin with a compound having an unsaturated double bond and modifying it.
- the compound having an unsaturated double bond can be obtained by: (G-1) a carboxyl group on the side chain of the soluble polyimide resin;
- the compound is not particularly limited as long as it reacts with a hydroxyl group and / or a hydroxyl group. Examples thereof include an epoxy compound having an unsaturated double bond, (meth) acrylic anhydride, and aryl halide such as aryl bromide.
- the reaction between the soluble polyimide resin and the epoxy compound having an unsaturated double bond may be carried out, for example, in an inert solvent in the presence of an organic base such as pyridine or triethylamine, by the above (G-1)
- the reaction can be performed by reacting a soluble polyimide resin with an epoxy compound. Thereby, the desired double bond polyimide resin can be obtained.
- the reaction temperature in the above reaction is preferably 40 to 130 ° C, at which the epoxy group reacts with the carboxyl group and Z or the hydroxyl group.
- the reaction is desirably performed at a temperature at which the unsaturated double bond does not cause a reaction such as polymerization due to heat.
- the temperature is more preferably 40 ° C or more and 100 ° C or less, and still more preferably 50 ° C or more and 80 ° C or less.
- the reaction time can be appropriately selected, but is preferably in the range of 1 hour to 20 hours.
- reaction solution obtained by the above reaction may be used in the form of a solution after the completion of the reaction, or may be precipitated in an alcohol solvent such as methanol, if necessary, depending on the purpose. Cleaning.
- the epoxy compound having an unsaturated double bond is not particularly limited as long as it has an epoxy group and an unsaturated double bond in the same molecule.
- glycidyl acrylate, glycidyl methacrylate examples thereof include aryl glycidyl ether and glycidyl vinyl ether.
- glycidyl methacrylate is particularly preferred because it is inexpensive, easily available, and has good reactivity.
- the reaction temperature in the above reaction is preferably a temperature of 0 ° C or more and 100 ° C or less at which the hydroxyl group of the side chain of the soluble polyimide resin can be converted into an acyl group.
- the reaction is performed at a temperature at which the saturated double bond does not cause a reaction such as polymerization due to heat.
- the temperature is more preferably 10 ° C or more and 100 ° C or less, and still more preferably 20 ° C or more and 80 ° C or less.
- the reaction time can be appropriately selected, but is preferably in the range of 1 hour to 20 hours.
- reaction solution obtained by the above reaction is precipitated in an alcohol solvent such as methanol to remove (meth) acrylic acid formed by the reaction, and washed with an alcohol solvent as necessary. Les, prefer to do.
- reaction between the (G-1) soluble polyimide resin and the aryl halide is carried out in an inert solvent in the presence of an organic base such as pyridine or triethylamine, for example, by adding (G-1) A reaction between a hydroxyl group on the side chain of the resin and an aryl halide can be exemplified. Thereby, the desired double bond polyimide resin can be obtained.
- the reaction is preferably performed at a temperature of 0 ° C or more and 100 ° C or less at which the (G-1) soluble polyimide resin and aryl halide can react.
- the reaction is desirably performed at a temperature at which the unsaturated double bond does not cause a reaction such as polymerization due to heat.
- the temperature is more preferably 0 ° C or more and 80 ° C or less, and still more preferably 20 ° C or more and 50 ° C or less.
- the reaction time can be appropriately selected, but is preferably in the range of 1 hour to 20 hours.
- reaction solution obtained by the above reaction is preferably precipitated in an alcohol solvent such as methanol, and washed with an alcohol solvent as necessary.
- (G-1) a carboxy group of the side chain of the soluble polyimide resin and It is preferable to adjust the number of equivalents of the compound having an unsaturated double bond to be reacted so that a carboxyl group and / or a hydroxyl group remain without reacting all the hydroxyl groups.
- the acid equivalent of the double bond polyimide resin after the reaction is adjusted to be 7000 or less.
- the (G-1) soluble polyimide resin obtained by introducing a photopolymerizable group and / or a thermopolymerizable functional group called an unsaturated double bond obtained as described above has good curability and adhesion. have.
- the double bond polyimide resin is only required that the soluble polyimide resin (G-1) has an unsaturated double bond in a side chain. That is, the unsaturated double bond of the soluble polyimide resin (G-1) is not limited to the above-described functional group, but has a functional group having an unsaturated double bond other than the above functional group. , You can.
- the compound having a phenolic hydroxyl group that is, the (H-1) phenoxyphosphazene compound and the Z or (G-2) crosslinked phenoxyphosphazene compound Is used.
- the (G-2) crosslinked phenoxyphosphazene conjugate is a phosphazene conjugate obtained by crosslinking the (H-1) phenoxyphosphazene compound.
- the (II-1) phenoxyphosphazene compound used in the present invention is not particularly limited as long as it is a phosphazene conjugate having a phenolic hydroxyl group. At least one of (G_l 1) cyclic phenoxyphosphazene compound and (G_l 2) chain phenoxyphosphazene compound is preferably used.
- the structure, physical properties, production method, and the like of the (G-11) cyclic phenoxyphosphazene compound and the (G-12) chain phenoxyphosphazene compound in the present embodiment are described in the first embodiment.
- the (G-2) crosslinked phenoxyphosphazene conjugate has at least one phenolic hydroxyl group
- the (H-1) phenoxyphosphazene conjugate It is a phosphazene compound obtained by crosslinking a product.
- the (G-2) cross-linked phenoxyphosphazene compound may be a compound obtained by cross-linking the above-mentioned (H-1) phenoxyphosphazene compound with a known cross-linking group, and is preferably a phenylene-based cross-linking group. It is preferable that the above (H-1) phenoxyphosphazene compound is crosslinked.
- the phenylene-based cross-linking group may be any cross-linking group containing a phenyl group in the structure, but the same cross-linking group as in Embodiment 1 can be used. .
- any of the applicable compounds is used as the phenoxyphosphazene conjugate. Although it may be used, it is preferable to use the (G-11) cyclic phenoxyphosphazene compound and / or (G-12) chain phenoxyphosphazene compound described above. At this time, it is preferable to use the above phenylene-based crosslinking group also as the crosslinking group.
- phenoxyphosphazene compound (G-11) cyclic phenoxyphosphazene compound and Z or (G-12) chain phenoxyphosph
- the cross-linking conditions are changed to the following ( It is preferable to specify that 3) and (4) are satisfied.
- the phenylene-based cross-linking group is a compound of the (H-1) phenoxyphosphazene compound ((G-11) cyclic phenoxyphosphazene compound, and / or (G- 12) Two phenyl and hydroxyphenyl groups of the chain phenoxyphosphazene compound) are eliminated. And (4) the phenyl group and hydroxyphenyl group content of the crosslinked phenoxyphosphazene compound in the above phenyloxyphosphazene compound. It is preferably within the range of 50-99.9% based on the total number of groups.
- the crosslinked phenoxyphosphazene conjugate that satisfies the above conditions (1) and (4) is referred to as (G-21) phenylene-based crosslinked phenoxyphosphazene compound.
- the method for producing the (G-2) crosslinked phenoxyphosphazene conjugate is not particularly limited, and for example, can be produced by the same method as in the first embodiment.
- the blending amount of the phenoxyphosphazene conjugate (including the crosslinked body) is not particularly limited, but the (G-1) soluble It is preferred that the amount be within a range of 1 to 100 parts by weight based on 100 parts by weight of the total weight of the polyimide resin and the (I) (meth) acrylic compound described later. Is more preferable, and it is particularly preferable to be within the range of 1 to 40 parts by weight.
- the amount of the phenoxyphosphazene compound used is less than 1 part by weight based on 100 parts by weight of the total weight of (G-1) soluble polyimide resin and (I) (meth) acrylic compound, it is sufficient. In some cases, a high flame-retardant effect cannot be obtained. On the other hand, if the total weight exceeds 100 parts by weight, the photosensitive resin film in a semi-cured state (B stage state) may become sticky or the resin may easily exude during thermocompression bonding. Is unfavorable because it may adversely affect the physical properties of the cured product.
- (I) the (meth) acrylic compound will be described.
- the (I) (meth) acrylic compound component into the photosensitive resin composition according to the present invention.
- a photosensitive resin film produced from the photosensitive resin composition that not only imparts good curability but also provides good curability can be obtained.
- the viscoelasticity during thermal processing can be reduced, and fluidity during thermal lamination can be imparted. That is, thermal lamination at a relatively low temperature becomes possible, and the unevenness of the circuit can be embedded.
- a (meth) acrylic compound refers to a (meth) acrylic compound, an epoxy (meth) acrylate, a polyester (meth) acrylate, a urethane (meth) acrylate, an imide (meth) (T) Compounds selected from the group consisting of atalylates.
- (meth) phthalinole means acryl and / or methacryl.
- the total weight of the (I) (meth) acrylic compound contained in the photosensitive resin composition of the present invention is in the range of 1 to 100 parts by weight based on 100 parts by weight of the (G-1) soluble polyimide resin. More preferably, it is within the range of 1 to 80 parts by weight. More preferably, it is within the range of 1 to 50 parts by weight.
- the photosensitive resin composition obtained from the obtained photosensitive resin composition is used.
- the (I) (meth) acrylic compound may exude during the laminating process because the heat resistance of the water-soluble resin film decreases.
- the (I) (meth) acrylic compound used in the photosensitive resin composition of the present invention particularly contains at least one epoxy group and at least one (meth) acryl group in one molecule.
- a (meth) acrylic compound By using such a (I) (meth) acrylic compound, the hydrolysis resistance and the adhesive strength to the copper foil of the photosensitive resin film produced from the obtained photosensitive resin composition are improved. It becomes possible.
- the (I) (meth) acrylic compound having at least one or more epoxy groups and one or more (meth) acrylic groups in one molecule is not particularly limited, and examples thereof include glycidyl methacrylate and the like. And epoxide acrylates such as NK oligo EA-1010 and EA-6310 (both are trade names, manufactured by Shin-Nakamura Chemical Co., Ltd.).
- the (I) (meth) acrylic compound used in the photosensitive resin composition of the present invention includes, in addition to the above, an epoxy (meth) atalyre containing at least two or more hydroxyl groups in one molecule. It is preferable to use epoxy (meth) acrylate which contains at least four or more hydroxyl groups in one molecule.
- the epoxy (meth) acrylate which contains at least two or more hydroxyl groups in one molecule is not particularly limited, but may be lipoxy SP-2600 (trade name, manufactured by Showa Kobunshi), NK Oligo EA-1020, NK Oligo EA-6340 (all trade names, manufactured by Shin-Nakamura Chemical), Calad R-280, Calad R-190 (all trade names, manufactured by Nippon Kayaku), Ebecryl600, Ebecryl3700 (all trade names, Daicel UCB ), Etc .; bisphenol A-type epoxy acrylate; Ebe cryl3200, Ebecryl3500, Ebecryl3701, Ebecryl3703 (all trade names, Daicel UCB), etc .; modified bisphenol A type epoxy acrylate; NK oligo EA-6320, NK oligo EA — 6340 (both trade names, Shin-Nakamura-Danigaku) and other phenolic novolake oxyatarylates
- the photosensitive resin composition used in the present invention contains the above-mentioned epoxy (meth) acrylate and at least one or more epoxy groups and one or more (meth) acryl groups in one molecule.
- Polyester (meth) acrylate, urethane (meth) acrylate, imide (meth) acrylate, and other (meth) acryl compounds can be used for the acrylic compound.
- polyester (meth) acrylate By using the polyester (meth) acrylate, flexibility can be imparted to the photosensitive resin film produced from the obtained photosensitive resin composition.
- polyester (meth) acrylate include, but are not particularly limited to, Aronix M_5300, M-6100, and M-7100 (all trade names, manufactured by Toagosei Co., Ltd.).
- urethane (meth) acrylate By using urethane (meth) acrylate, flexibility can be imparted to a photosensitive resin film produced from the obtained photosensitive resin composition.
- urethane (meta) atalylate examples include, but are not particularly limited to, Aronix M-1100, M_1310 (both trade names, manufactured by Toagosei Co., Ltd.) and Calad UX-4101 (trade name, manufactured by Nippon Kayaku). Can be.
- imide (meth) acrylate By using imide (meth) acrylate, it was possible to prepare a photosensitive resin composition obtained from Adhesion to a substrate (eg, polyimide film, copper foil, etc.) to which the photosensitive resin film to be bonded is attached.
- a substrate eg, polyimide film, copper foil, etc.
- the imido (meth) acrylate include, but are not particularly limited to, Aronix TO-1534, TO-1429, and TO-1428 (all trade names, manufactured by Toagosei Co., Ltd.).
- the (meth) acrylic compound other than those shown above is not particularly limited, but in order to improve the crosslink density by light irradiation, a polyfunctional compound having at least two unsaturated double bonds is required. It is desirable to use a (meth) acrylic compound. Further, in order to impart heat resistance to a photosensitive resin film produced from the obtained photosensitive resin composition, a (meth) acrylic conjugate having at least one aromatic ring and Z or hetero ring in one molecule is used. It is preferable to use
- E ⁇ modified means having an ethylene oxide modified site
- P ⁇ modified means having a propylene oxide modified site
- the number of repeating units (one (CH 2 CH 2 O) —) in the ethylene oxide-modified (E ⁇ -modified) part in one molecule, or the propylene in one molecule is 10 or more (meta) It is particularly preferable to use an acrylic compound. By having 10 or more of the above repeating units, it is possible to impart heat fluidity during lamination to a photosensitive resin film produced from the photosensitive resin composition, and to further improve solubility in an aqueous alkaline solution. That thing.
- the (meth) acrylic conjugate having 10 or more repeating units of the E ⁇ denatured site or the number of repeating units of the P ⁇ denatured site as described above is not particularly limited.
- Such a (meth) acrylic compound having 10 or more repeating units of the E ⁇ modified site or repeating units of the P ⁇ modified site is contained in the photosensitive resin composition of the present invention. More preferably, it is contained at least 10 parts by weight, more preferably at least 20 parts by weight, based on the total weight of all (I) (meth) acrylic compounds.
- the (G-1) soluble polyimide resin, (H-1) phenoxyphosphazene conjugate, and (I) a (meth) acrylic compound And J) other components may be contained.
- ti-1) epoxy resin By adding ti-1) epoxy resin to the photosensitive resin composition of the present invention, the adhesiveness of a photosensitive resin film produced using the photosensitive resin composition to a copper foil, a polyimide film, or the like is improved. be able to.
- the epoxy resin is not particularly limited.
- Epikote 828, 834, 1001, 1002, 1003, 1004, 1005, 1007, 1010, 1100 is a trade name of Jyanon Epoxy Resin Co., Ltd.
- Bisphenol A type epoxy resin such as 0F, 220H, 220HH, 180H65 (all trade names, manufactured by Japan Epoxy Resin Co., Ltd.); Trishydroxy such as EPPN-502H (trade name, manufactured by Nippon Kayaku Co., Ltd.) Phenyl methane type epoxy resin; naphthalene aralkyl novolak type epoxy resin such as ESN-375 (trade name, Nippon Steel Chemical Co., Ltd.); ESN-185 (trade name, Nippon Steel Chemical Co., Ltd.) And a biphenol-type epoxy resin such as YX4000H (trade name, manufactured by Yuka Shell Co., Ltd.).
- bisphenol A glycidyl ether type epoxy resin bisphenol F glycidyl ether type epoxy resin, novolak glycidyl ether type epoxy resin, glycidyl ester type epoxy resin, glycidylamine type epoxy resin, cycloaliphatic It may be an epoxy resin, an aromatic epoxy resin, a halogenated epoxy resin, or the like.
- the epoxy resin may be used alone or in combination of two or more of the above epoxy resins.
- the above J 1) epoxy resin is preferably used in an amount of 1 to 100 parts by weight based on 100 parts by weight of the soluble polyimide resin (G-1). It is more preferable to use within the range of 2 to 30 parts by weight.
- the amount of the ⁇ - ⁇ ) epoxy resin is less than 1 part by weight based on 100 parts by weight of the (G-1) soluble polyimide resin, the adhesiveness of the obtained photosensitive resin film tends to decrease. If it exceeds 100 parts by weight, heat resistance and bending resistance may be reduced.
- epoxy resin is used as a material of the photosensitive resin composition of the present invention
- the photosensitive resin is cured in order to efficiently cure the photosensitive resin film produced using the photosensitive resin composition.
- a curing accelerator and / or a curing agent may be added to the composition.
- Such a CF-2) curing accelerator and a hardening agent are not particularly limited.
- an imidazonole-based compound, an acid anhydride, Grade amines, hydrazines, aromatic amines, phenols, triphenylphospholes, organic peroxides and the like can be mentioned.
- One of these 2) curing accelerators and / or curing agents may be used alone or in combination of two or more.
- the amount of the 2) curing accelerator and / or curing agent used is within the range of 0.1 to 20 parts by weight based on 100 parts by weight of the (G-1) soluble polyimide resin. It is more preferably in the range of 120 parts by weight, particularly preferably in the range of 115 parts by weight. If the above-2) curing accelerator and / or curing agent is less than 0.1 part by weight based on 100 parts by weight of (G-1) soluble polyimide resin, CF-1) epoxy resin is sufficiently cured. On the contrary, if it exceeds 20 parts by weight, the heat resistance may be reduced.
- the photosensitive resin composition of the present invention preferably contains a photo-initiator and / or a sensitizer.
- (1) 3) When a photosensitive resin film produced using a photosensitive resin composition containing a photoreaction initiator and / or a sensitizer is exposed to light, a cross-linking reaction or a polymerization reaction is promoted in an exposed region. can do. Thereby, the solubility of the photosensitive resin film in the aqueous alkali solution can be made sufficiently different between the exposed region and the unexposed region. As a result, the pattern can be suitably developed on the photosensitive resin film.
- Examples of the photoreaction initiator include a radical generator, a photodynamic thione generator, a photobase generator, and a photoacid generator.
- radical generator those which generate radicals by light having a long wavelength of about g-line are preferable.
- 2,2-dimethoxy-1,2-diphenylethane-1-one, 2-hydroxy_2 —Ketone compounds such as methyl-1-phenylphenylpropane-1-one; bis (2,4,6-trimethynolebenzoyl) -1-phenylphosphine oxide, bis (2,6-dimethoxybenzoinole) -1,2 Phosphine oxide compounds such as 4, 4_trimethyl-pentylphosphine oxide; bis (2,4-cyclopentadiene_1_yl) -bis (2,6-difluoro-3-(1H_pyrroquinone-1) And titanocene compounds such as (i) -phenyl) titanium, but are not particularly limited.
- Examples of the above-mentioned photothion generator include difluorodonium salts such as dimethoxyanthraquinone sulfonic acid difluorodonium salt, etc. Salts, etc. Power S that can be performed S is not particularly limited. In addition to the above salts, it is more preferable to mix a high cationically curable, alicyclic epoxy or vinyl ether conjugate.
- a benzyl alcohol ethane compound obtained by a reaction of nitrobenzyl alcohol dinitrobenzyl alcohol with isocyanate; nitro-1-phenylethyl alcohol dinitro — 1-phenylethyl alcohol and isocyanate to obtain a phenyl alcohol urethanic compound; dimethoxy-1,2-phenyl-2-propanol-urethane to obtain a propanol-urethane conjugate.
- the power that can be raised is not particularly limited.
- Examples of the photoacid generator include compounds capable of generating a sulfonic acid such as a rhododium salt, a sulfonium salt, and an onium salt; and compounds capable of generating a carboxylic acid such as a naphthoquinonediazide. What is not done.
- compounds such as diazonium salts and bis (trichloromethyl) triazines can generate a sulfone group upon irradiation with light, and therefore, these compounds can also be preferably used.
- examples of the sensitizer include, but are not particularly limited to, for example, mihiraketone, bis-4,4'-ethylenaminobenzophenone, 3,3'_carbonylbis (7-ethylamino) coumarin. And 2- (p-dimethylaminostyryl) quinoline, 4- (p-dimethylaminostyryl) quinoline and the like.
- Photoreaction initiators and / or sensitizers can be used alone or in combination of two or more.
- the amount of the ⁇ -3) photoreaction initiator and / or sensitizer used is based on 100 parts by weight of the total weight of the (G-1) soluble polyimide resin and (I) (meth) acrylic compound. Therefore, the content is preferably in the range of 0.01-10 parts by weight, and more preferably in the range of 0.0110 parts by weight.
- the amount of the photoreaction initiator and / or the sensitizer used is 0.1% based on 100 parts by weight of the total weight of (G-1) soluble polyimide resin and (I) (meth) acrylic compound. If the amount is less than 001 parts by weight or exceeds 10 parts by weight, no sensitizing effect can be obtained, which may adversely affect the developability.
- the photosensitive resin composition according to the present invention comprises the above (G-1) soluble polyimide resin, (H-1) phenoxyphosphazene compound, and Z or (H-1) phenoxyphosphazene compound.
- (G-2) a cross-linked phenoxyphosphazene conjugate obtained by cross-linking and (I) a (meth) acrylic compound, and preferably ()) other components.
- the method for producing (preparing) the photosensitive resin composition according to the present invention is not particularly limited, but may be dissolved in an organic solvent which can well dissolve the above components. Then, a method of obtaining a solution of the photosensitive resin composition can be given. More specifically, for example, a solution of the photosensitive resin composition may be obtained by adding each of the above components to an appropriate solvent and stirring, and then dissolving each of the above components in an appropriate solvent. The solution can be obtained by preparing a solution for each component and mixing the solutions.
- organic solvent used at this time a known organic solvent used as a solvent for the polyimide resin can be used. Specifically, for example, aromatic hydrocarbons, ketones, esters, ethers (cyclic ethers, glycol ethers, etc.), N-substituted amides, alcohols, carboxylic acids, amines, chlorinated solvents And the like. Since the organic solvent is removed in a later step, it is advantageous in the production process to dissolve the components contained in the photosensitive resin composition and to select a substance having a boiling point as low as possible. Among them, a low-boiling organic solvent having a boiling point of 170 ° C or lower, preferably 160 ° C or lower can be preferably used.
- low-boiling organic solvent examples include cyclic ethers such as tetrahydrofuran, dioxolane, and dioxane; ethylene glycol dimethyl ether, triglyme, diethylene glycolone, etinoleserosonolev, methinoresero.
- Ethers such as chain ethers such as sonolev, getinoleatenore, and various propylene glycol ethers; alcohols such as methanol, ethanol, isopropyl alcohol, and butanol; acetone, methyl Ketones such as ethyl ketone and methyl isobutyl ketone; cycloalkanes such as cyclopentanone and cyclohexanone; esters such as ethyl acetate; and the like are preferably used. Also, chain ethers such as sonolev, getinoleatenore, and various propylene glycol ethers; alcohols such as methanol, ethanol, isopropyl alcohol, and butanol; acetone, methyl Ketones such as ethyl ketone and methyl isobutyl ketone; cycloalkanes such as cyclopentanone and cyclohexanone; esters such as ethy
- the method of using the photosensitive resin composition according to the present invention is not particularly limited, but specifically, for example, a photosensitive resin film or a photosensitive resin film formed using the above photosensitive resin composition is used. Resin sheet, resin preparation and the like.
- the photosensitive resin film is obtained by forming a photosensitive resin composition into a film.
- the photosensitive resin film is, for example, a resist film for a pattern circuit used for forming a pattern circuit, a photosensitive coverlay film used for forming an insulating protective layer, and a photosensitive dry film resist used for forming an interlayer insulating layer. Forces that can be used for various purposes, such as, but not limited to.
- the photosensitive resin film is a finolem with a configuration according to its use.
- the photosensitive resin film and the photosensitive dry film resist are combined.
- the photosensitive resin composition or a laminate including at least one resin layer formed using the photosensitive resin film or the photosensitive resin preparation using the same is also one of the methods of using the present invention.
- This laminate can be suitably used, for example, as a circuit board or a multilayer printed wiring board.
- the photosensitive resin composition according to the present invention can be used as a resin preparation in the above-mentioned solution state. Other solvents and additives may be added as necessary to use as a resin formulation.
- the resin preparation containing the photosensitive resin composition according to the present invention can be used as a coating agent or a varnish, for example, various fibers such as glass cloth, glass mat, aromatic polyamide fiber cloth, and aromatic polyamide fiber mat. Can also be impregnated. in this way If the photosensitive resin composition impregnated in the fibers is semi-cured, it is possible to obtain a fiber-reinforced resin sheet.
- the photosensitive resin composition according to the present invention can be used as a photosensitive resin film or a photosensitive resin sheet by being formed into a sheet in advance. Specifically, (1) a single-layer sheet composed of only the photosensitive resin composition, and (2) a resin layer composed of the photosensitive resin composition on one or both sides of a film (film substrate) used as a substrate. And (3) a laminate such as a multilayer sheet in which a film substrate and a resin layer composed of a photosensitive resin composition are alternately laminated.
- a photosensitive dry film resist will be specifically described as an example of the photosensitive resin film, and an example of a printed wiring board manufactured using the photosensitive dry film resist will be specifically described.
- the present invention is not limited to this.
- the photosensitive dry film resist is prepared by uniformly applying and drying an organic solvent solution of the above-described photosensitive resin composition on a support film. After uniformly applying the organic solvent solution of the photosensitive resin composition onto the support film, heating and / or hot air spraying is performed. This makes it possible to obtain a photosensitive dry film resist in which the organic solvent has been removed and the photosensitive resin composition has become a film.
- the photosensitive dry film resist formed in this way is one in which the photosensitive resin composition is kept in a semi-cured state (B-stage state). Therefore, when a thermocompression bonding process such as a heat lamination process is performed, it has appropriate fluidity, and the pattern circuit of the printed wiring board can be suitably embedded. After the pattern circuit is embedded, it can be completely cured by performing an exposure process, a thermocompression bonding process, and a heating cure.
- the drying temperature at the time of drying the organic solvent solution of the photosensitive resin composition is controlled by the (meth) acryl group contained in the photosensitive resin composition
- the temperature may be a temperature at which a curable group such as an epoxy group does not react. Specifically, the temperature is preferably 120 ° C or less, and particularly preferably 100 ° C or less.
- the drying time is preferably shorter within a range where the organic solvent can be removed.
- the material of the support film is not particularly limited, and various commercially available films such as a polyethylene terephthalate (PET) film, a polyphenylene sulfide film, and a polyimide film can be used. is there.
- PET films are often used because they have a certain degree of heat resistance and are relatively inexpensive.
- the support film may be one whose surface has been surface-treated with the photosensitive dry film resist in order to improve the adhesion and the releasability with the photosensitive dry film resist.
- the thickness of the support film is not particularly limited, but is preferably in the range of 5 to 50 ⁇ m, more preferably in the range of 10 30 zm.
- the thickness of the support film is less than 5 x m, the support film tends to be wrinkled and the operability tends to be reduced. Further, when the thickness of the support film exceeds 50 zm, there arises a problem that it becomes difficult to wind up the photosensitive dry film resist.
- a protective film is laminated on a photosensitive dry film resist prepared by applying an organic solvent solution of the photosensitive resin composition to a support film and drying.
- a photosensitive dry film resist prepared by applying an organic solvent solution of the photosensitive resin composition to a support film and drying.
- the protective film is preferably laminated on the photosensitive dry film resist surface at a temperature of 10 ° C to 50 ° C. If the temperature during the laminating process is higher than 50 ° C., the thermal expansion of the protective film may be caused, and the protective film after the laminating process may be wrinkled or curled.
- the bonding surface between the protective film and the photosensitive dry film resist has appropriate adhesion during storage and has excellent peelability. Les, prefer to be.
- the material of the protective film is not particularly limited, but examples thereof include a polyethylene film (PE film), a polyethylene bul alcohol film (EVA film), and a copolymer of polyethylene and polyethylene bul alcohol.
- PE film polyethylene film
- EVA film polyethylene bul alcohol film
- copolymer of polyethylene and polyethylene bul alcohol United film ”(hereinafter abbreviated as (PE + EVA) copolymer film),“ laminated body of PE film and (PE + EVA) copolymer film ”, or“ (PE + EVA) copolymer film ”
- PE + EVA copolymer film By simultaneous extrusion with polyethylene Film "(a film in which one side is a PE film side and the other side is a (PE + EVA) copolymer film side).
- the PE film has the advantages of being inexpensive and having excellent surface slipperiness. Also,
- the (PE + EVA) copolymer film has a proper adhesiveness to the photosensitive dry film resist and a releasability.
- the photosensitive dry film resist is used, for example, for forming an interlayer insulating layer of a printed wiring board.
- the protective film is peeled from the three-layer structure sheet including the protective film, the photosensitive dry film resist, and the support film described above.
- the one from which the protective film has been peeled off is referred to as a “photosensitive dry film resist with a support film”.
- the CCL with a circuit is covered with a photosensitive dry film resist with a support film so that the photosensitive dry film resist and the CCL with a circuit face each other, and are occupied by thermocompression bonding.
- the bonding by thermocompression bonding is not particularly limited as long as it is performed by hot pressing, laminating (thermal laminating), hot roll laminating, or the like.
- the treatment temperature is equal to or higher than the lower limit temperature at which lamination treatment is possible (compressible temperature). Should be fine.
- the processing temperature is preferably in the range of 50-150 ° C, more preferably in the range of 60-120 ° C. Preferably within the range of 80-120 ° C.
- thermocompression treatment a sample in which a photosensitive dry film resist is laminated on a CCL with a circuit and a support film is further laminated is obtained.
- pattern exposure and development are performed on the bonded sample.
- a photomask pattern is disposed on the support film of the bonded sample, and exposure processing is performed through the photomask.
- the support film is peeled off and image processing is performed to form holes (vias) corresponding to the photomask pattern.
- the support film was obtained after the photosensitive dry film resist with the support film was bonded onto the CCL with a force circuit that had been peeled off after the exposure treatment, that is,
- it may be stripped before performing the exposure processing.
- it is preferable to peel off after the exposure process is completed.
- a light source used for exposure a light source that effectively emits light of 300 to 430 nm is preferable.
- the photoreaction initiator contained in the photosensitive dry film resist normally functions by absorbing light having a wavelength of 450 nm or less.
- a basic solution in which a basic compound is dissolved may be used as a developer used for the above-mentioned development processing.
- the solvent for dissolving the basic compound is not particularly limited as long as it is a solvent capable of dissolving the above-mentioned basic compound, but it is particularly preferable to use water from the viewpoint of environmental problems and the like.
- Examples of the basic compound include hydroxides or carbonates of alkali metals or alkaline earth metals such as sodium hydroxide, potassium hydroxide, sodium carbonate, and sodium hydrogencarbonate, and tetramethylammonium.
- Organic amine compounds such as dimethyl hydroxide can be mentioned. Specifically, the compounds listed in the ⁇ Developer> section of Embodiment 1 are used. Let's do it.
- One of the basic compounds may be used, or two or more compounds may be used.
- the concentration of the basic compound contained in the basic solution is preferably in the range of 0.1 to 10% by weight, but from the viewpoint of the alkali resistance of the photosensitive dry film resist, the concentration of the basic compound is preferably 0.1 to 10% by weight. More preferably, it is within the range of 15% by weight.
- the method of the developing treatment is not particularly limited, and examples thereof include a method in which the developing sample is put into a basic solution and agitated, and a method in which the developing solution is sprayed and sprayed onto the developing sample. .
- a developing treatment using a 1% by weight aqueous sodium hydroxide solution adjusted to a liquid temperature of 40 ° C as a developing solution and using a spray developing machine is preferable.
- the spray developing machine is not particularly limited as long as it is a device that sprays a developing solution onto a sample.
- the development time until the pattern of the photosensitive dry film resist can be drawn may be any time as long as the pattern can be drawn, but it is preferable that development can be performed in a time of 180 seconds or less. Most preferably, development can be performed in a time of 60 seconds or less. If the development time exceeds 180 seconds, it is not preferable in terms of productivity.
- a measure of the development time there is a method of measuring the dissolution time of a photosensitive dry film resist in a semi-cured state (B-stage state). Specifically, a sample obtained by laminating a photosensitive dry film resist on a glossy surface of a copper foil was used as a developing solution using a 1% by weight aqueous solution of sodium hydroxide (solution temperature 40 ° C) in an unexposed state. This is a method in which spray development is performed at a spray pressure of 0.85 MPa. It is preferable that the photosensitive dry film resist is dissolved and removed in 180 seconds or less by this spray developing treatment. If the time required for dissolving and removing the photosensitive dry film resist exceeds 180 seconds, the workability is reduced.
- the photosensitive dry film resist After being exposed and developed as described above, the photosensitive dry film resist is completely cured by heating and curing the photosensitive dry film resist. As a result, the cured photosensitive dry film resist becomes an interlayer insulating layer of the printed wiring board.
- the protective layer of the printed wiring is formed by interlayer insulation.
- a pattern circuit may be formed, and the photosensitive dry film resist may be laminated as described above. .
- a multilayer printed wiring board can be manufactured.
- the photosensitive dry film resist is used as an insulating protective material or an interlayer insulating material of a printed wiring board.
- the photosensitive dry film resist can be used for other purposes.
- the photosensitive resin composition according to the present embodiment comprises (K) a soluble polyimide resin having a carboxyl group and Z or a hydroxyl group, a specific (L) phenoxyphosphazene compound, and (M) (meth) acrylic resin. Force that contains a system compound (N) Other components may be contained as necessary.
- the resulting photosensitive dry film resist can contain components that impart various physical properties such as adhesiveness, flame retardancy, heat resistance, and bending resistance. Note that the photosensitive dry film resist according to the present embodiment is manufactured from the photosensitive resin composition according to the present embodiment. Hereinafter, each component will be described in detail.
- the resulting photosensitive dry film resist has heat resistance and bending resistance. It can provide excellent mechanical properties, electrical insulation and chemical resistance. Further, since it contains a carboxyl group and / or a hydroxyl group (preferably a phenolic hydroxyl group), aqueous development becomes possible.
- soluble polyimide resin (K) having a carboxyl group and a Z or hydroxyl group the same soluble polyimide resin as the (G-1) soluble polyimide resin described in the second embodiment can be used.
- the soluble polyimide resin having a carboxyl group and Z or a hydroxyl group preferably has, for example, a carbon-carbon double bond in a side chain or the like.
- the same can be used for solubility in an organic solvent, weight average molecular weight, acid equivalent and the like.
- the same organic solvent as that used in Embodiment 2 can be used as the organic solvent.
- the polyamic acid can be synthesized in the same manner as in Embodiments 1 and 2. That is, the soluble polyimide resin having ( ⁇ ) a carboxyl group and a ⁇ or hydroxyl group can be obtained from a polyamic acid which is a precursor thereof.
- This polyamic acid can be obtained by reacting diamine with an acid dianhydride in an organic solvent. Specifically, in an inert atmosphere such as argon or nitrogen, diamine is dissolved in an organic solvent or dispersed in a slurry to obtain a diamine solution.
- the acid dianhydride may be added to the above-mentioned diamine solution after being dissolved in an organic solvent or dispersed in a slurry state, or in a solid state.
- those similar to the diamine and the acid dianhydride used for producing the (G-1) soluble polyimide in the second embodiment can be used.
- the temperature condition for the reaction between the diamine and the acid dianhydride is not particularly limited, but is preferably 80 ° C or less. Preferably, it is 0-50 ° C. If it exceeds 80 ° C, the polyamic acid may be decomposed, while if it is 0 ° C or less, the progress of the polymerization reaction may be slowed down.
- the reaction time may be arbitrarily set within a range of 10 minutes to 30 hours.
- the organic solvent used in the above polyamic acid synthesis reaction is not particularly limited as long as it is an organic polar solvent, and the organic solvent described in Embodiment 2, or a tetrahydrofuran, dioxane, or dioxolane can be used. And the like.
- the method for imidizing the above polyamic acid can be the same as that in Embodiment 2.
- the polyamic acid can be dehydrated and closed by directly placing the polyamic acid solution in a container which has been subjected to a release treatment such as coating with a fluororesin, and heating and drying under reduced pressure.
- the soluble polyimide having a carboxyl group and / or a hydroxyl group according to the present embodiment is preferably the double bond polyimide resin. That is, it is more preferable that the molecule has at least one or more carbon-carbon double bonds selected from the group consisting of an acryl group, a methacryl group, a butyl group, and an aryl group, for example, in a side chain.
- the soluble polyimide may have a functional group having a carbon-carbon double bond other than the functional groups described above.
- the double bond polyimide resin according to the present embodiment can be obtained by modifying a soluble polyimide resin having a carboxyl group and Z or a hydroxyl group with a compound having a carbon-carbon double bond, and modifying the compound. .
- Compounds to be reacted with the soluble polyimide resin, solvents to be used, reaction conditions, and the like can be performed in the same manner as in Embodiment 2.
- the (L) phenoxyphosphazene compound of the present embodiment has the general formula (22):
- R represents a group -P ( ⁇ Ph) or a group P ( ⁇ ) ( ⁇ Ph B is an integer of 30000.
- R represents _C (CH) -SO_S_ or - ⁇ _.
- P represents 0 or 1.
- a crosslinking group containing any one of bisphenylene groups represented by It is characterized by containing a (L-13) crosslinked phenoxyphosphazene compound having a structure crosslinked by intervening.
- the content ratio of the phenyl group in the (L-13) crosslinked phenoxyphosphazene compound may be such that the (L-11) cyclic phenoxyphosphazene conjugate or the (L-12) chain phenoxyphosphazene compound is used. It is preferably 50-99.9% based on the total number of all phenyl groups in the phosphazene compound containing at least one of the azene compounds.
- the content ratio of the feninole group can be determined from the elemental analysis value.
- Such a (L) phenoxyphosphazene compound is superior to conventional phosphorus compounds in resistance to hydrolytic decomposition of water.
- it has excellent heat resistance, Flame retardancy can be imparted without lowering the physical properties such as adhesiveness of the obtained photosensitive dry film resist.
- the (L-3) crosslinked phenoxyphosphazene compound is excellent in compatibility with the polyimide resin, so that it is less likely to cause bleeding and has low volatility. More preferred.
- the above-mentioned (L-13) crosslinked phenoxyphosphazene compound is not particularly limited, and examples thereof include SPB_100, SPE_100, SPS_100, and SPB-156 (manufactured by Otsuka Iridaku).
- the (L) phenoxyphosphazene compound further includes the (L-11) cyclic phenoxyphosphazene conjugate compound, (L-12) A phenol phosphazene compound such as a chain phenol phosphazene compound may be contained.
- the amount of the (L) phenoxyphosphazene compound used is determined by the total amount of the (K) soluble polyimide resin having a carboxyl group and / or a hydroxyl group, and the (M) (meth) acrylic compound described later.
- 100 parts by weight it is preferable to be within the range of 100 parts by weight, and it is more preferable to be within the range of 110 parts by weight. Particularly preferred.
- the use capacity of the above (L) phenoxyphosphazene compound (K) 1 to 100 parts by weight of the total amount of the soluble polyimide resin having a carboxyl group and / or a hydroxyl group and the (L) phenoxyphosphazene compound. If the amount is less than parts by weight, a sufficient flame retardant effect may not be obtained. On the other hand, if the amount exceeds 100 parts by weight, the photosensitive dry film resist in the B-stage state may become sticky or the resin may easily exude during thermocompression bonding, which further adversely affects the physical properties of the cured product. It is not preferable because it may be given.
- the (M) (meth) acrylic compound By containing the (M) (meth) acrylic compound in the photosensitive resin composition, the viscosity of the photosensitive dry film resist that is manufactured only by imparting good curability can be reduced. The elasticity can be reduced and fluidity during thermal lamination can be provided. That is, thermal lamination can be performed at a relatively low temperature, and the unevenness of the circuit can be embedded.
- the (M) (meth) acrylic compound in the present embodiment is the same as that used in the second embodiment.
- the same (meth) acrylic compounds as those described above can be used. Further, the conditions such as the amount of the (M) (meth) acrylic compound are preferably used in the same manner as in Embodiment 2.
- the photosensitive resin composition of the present invention includes (K) a soluble polyimide resin having a carboxyl group and / or a hydroxyl group, (L) a phenoxyphosphazene conjugate, and (M) a (meth) acryl-based resin.
- (N) other components may be contained as necessary.
- Other components include, for example, an epoxy resin, a curing accelerator and / or a curing agent, a photoreaction initiator and / or a sensitizer.
- the epoxy resin is not particularly limited.
- the same epoxy resin as the ⁇ -1) epoxy resin used in Embodiment 2 can be used.
- the conditions such as the amount of epoxy resin used are preferably used in the same manner as in Embodiment 2.
- a curing accelerator and / or a curing agent are added to the photosensitive resin composition in order to efficiently cure the photosensitive dry film resist to be produced. May be.
- a curing accelerator and / or curing agent is not particularly limited, but for example, the same as the ⁇ -2) curing accelerator and / or curing agent used in Embodiment 2 may be used. Can be. Further, it is preferable to use conditions such as the amount of the curing accelerator and / or the curing agent used in the same manner as in the second embodiment.
- a photosensitive dry film resist to which a photoreaction initiator and / or a sensitizer is added When a photosensitive dry film resist to which a photoreaction initiator and / or a sensitizer is added is exposed, a cross-linking reaction or a polymerization reaction can be promoted in an exposed region. As a result, the solubility of the photosensitive dry film resist in the aqueous developer can be made sufficiently different between the exposed area and the unexposed area, and therefore, a pattern can be formed on the photosensitive dry film resist. It becomes possible to develop suitably.
- the photoreaction initiator and / or sensitizer the same ones as those used in the third embodiment 3) photoreaction initiator and / or sensitizer used in Embodiment 2 can be used. Further, the conditions such as the amount of the photoreaction initiator and / or the sensitizer used are preferably used in the same manner as in Embodiment 2.
- the photosensitive dry film resist is prepared by uniformly applying and drying an organic solvent solution of a photosensitive resin composition on a support film.
- the photosensitive resin composition of the present invention comprises (II) a soluble polyimide, (L) a phenoxyphosphazene compound, (C) an (meth) acrylic compound, and if necessary, (D) other components. And a solution obtained by uniformly dissolving the same in an organic solvent is referred to as an organic solvent solution of the photosensitive resin composition.
- the organic solvent is not particularly limited as long as it can dissolve the components contained in the photosensitive resin composition.
- organic solvent examples include ether solvents such as dioxolan, dioxane, and tetrahydrofuran; ketone solvents such as acetone and methyl ethyl ketone; and alcohol solvents such as methyl alcohol and ethyl alcohol.
- ether solvents such as dioxolan, dioxane, and tetrahydrofuran
- ketone solvents such as acetone and methyl ethyl ketone
- alcohol solvents such as methyl alcohol and ethyl alcohol.
- One of these organic solvents may be used alone, or two or more thereof may be used in combination. Since the organic solvent is removed in a later step, it is necessary to dissolve the components contained in the photosensitive resin composition and select a substance having a boiling point as low as possible. Above is advantageous.
- the organic solvent solution of the above-mentioned photosensitive resin composition is uniformly applied on the support film, heating and / or hot air spraying is performed.
- the organic solvent is removed, and a photosensitive dry film resist in which the photosensitive resin composition has become a film can be obtained.
- the photosensitive dry film resist thus formed is obtained by keeping the photosensitive resin composition in a semi-cured state ( ⁇ stage). Therefore, when performing thermocompression bonding such as thermal lamination, it has appropriate fluidity and can be used to support the pattern circuit of the printed wiring board.
- the embedding can be suitably performed. Further, after the pattern circuit is loaded, it can be completely cured by performing an exposure process, a thermocompression bonding process, and a heating cure.
- the method for producing the photosensitive dry film resist can be performed in the same manner as in the second embodiment. Further, the material and thickness of the support film, the material of the protective film, the laminating conditions, and the like are preferably the same as those in the second embodiment.
- the photosensitive dry film resist is used, for example, for forming an interlayer insulating layer of a printed wiring board.
- the printed wiring board according to the present embodiment can be manufactured in the same manner as in the second embodiment. That is, when a CCL with a circuit is used, it can be manufactured by performing a thermocompression treatment or an exposure / development treatment. In this case, the thermocompression bonding conditions, the exposure and development conditions, and the like are preferably the same as in the second embodiment.
- the photosensitive dry film resist has been described as being used as an insulating protective material or an interlayer insulating material of a printed wiring board. It is also possible to use other than.
- Flame retardancy test for plastic materials According to UL94, flame retardancy test was conducted as follows.
- the solution of the photosensitive resin composition was coated on a 25-zm-thick polyimide film (Kanebuchi Chemical Industry Co., Ltd., 25AH film) while shielding the solution with a bar coater at 5 ° C for 5 minutes. The coating was dried at 90 ° C. for 5 minutes so that the coating thickness after drying was 25 zm. Next, after exposing to light of 400 nm by 600 mjZcm 2 , heat curing is performed in an oven at 180 ° C. for 2 hours. [0413] Twenty pieces of the sample thus prepared are cut so as to have a size of 1 / 27cm wide x 12.7cm long x 50 / im (including the thickness of the polyimide film).
- a spray developing machine (Etching Machine ES-655D, manufactured by Sun Hayato Co., Ltd.), 1% by weight aqueous solution of potassium hydroxide (liquid temperature 40 ° C), spray pressure 0.85MPa, residence time in developer 1 minute Developed under the following conditions.
- the photomask pattern used is one in which fine holes of 100 ⁇ 100 / im square are drawn. The pattern formed by development is then washed with distilled water to remove the developer and dried. A pass was obtained if a hole of 100 ⁇ 100 ⁇ m square was developed.
- soft-etch electrolytic copper foil (NDP-3 1 / 2 ⁇ made by Mitsui Kinzoku) with a 10% by weight sulfuric acid aqueous solution for 1 minute (this is the step of removing the protective agent from the copper foil surface). Wash the surface with acetone and dry.
- the solution of the photosensitive resin composition is applied to the above-mentioned electrolytic copper foil with a bar coater, and dried at 60 ° C for 5 minutes and at 90 ° C for 5 minutes so that the applied thickness after drying becomes 3 ⁇ 45 xm. did.
- the photosensitive resin composition of this laminate is irradiated with light having a wavelength of 400 nm. Expose only 300 mj / cm 2 .
- the sample is then cut into 4 cm squares, cured at 180 ° C for 2 hours and cured.
- the average molecular weight is 448.
- Triethylamine (Wako Pure Chemical Industries, Ltd.), tetrahydrofuran (Wako Pure Chemical Industries, Ltd.), and hexane (Wako Pure Chemical Industries, Ltd.).
- NMR nuclear magnetic resonance spectrum
- the organic layer was washed three times with 500 mL of a 5% by weight aqueous sodium hydroxide solution, and further washed once with 500 mL of a (1 + 9) aqueous hydrochloric acid solution, once with 500 mL of a 5% by weight aqueous sodium hydrogen carbonate solution, and twice with 500 mL of water. .
- the pH of the aqueous layer at this time was 7-8.
- a 4-methoxyphenoxy derivative was obtained in the same manner as in Synthesis Example 2 except that 58 g (0.5 unit mol) of the cyclic and chain chlorophosphazenes synthesized in Synthesis Example 1 were used.
- the yield was 135.7 g (93% yield), the residual chlorine content was 0.04%, and it was a yellow highly viscous body.
- the methyl group was removed in the same manner as in Synthesis Example 2 except that the 4-methoxyphenoxy derivative 131 ⁇ lg (0.45 unit mol) obtained above was used.
- the obtained product was pale brown, highly viscous, and the yield was 98.6 g (75% yield).
- the residual chlorine content of the product was 0.01% or less, and-and 31 P-NMR analysis confirmed that synthesis was completed.
- the hydroxyl group content was 12.7% (hydroxyl equivalent 133.9).
- the organic layer was washed once with a 5% by weight aqueous solution of sodium hydroxide and once with a 2% by weight aqueous solution of sodium hydroxide, and then washed once with a (1 + 9) aqueous solution of hydrochloric acid, and then washed with a 5% by weight of hydrogencarbonate. After washing once with sodium water and twice with water, the aqueous layer was neutralized. Next, the organic layer was separated, dried over anhydrous magnesium sulfate, and toluene was distilled off to obtain 110.Og (yield: 90%) of a pale yellow oily product. The residual chlorine content was 0.01% or less.
- the organic layer was washed once with a 5% by weight aqueous sodium hydroxide solution and once with a 2% by weight aqueous sodium hydroxide solution, and then washed once with a (1 + 9) hydrochloric acid aqueous solution, and then washed with a 5% by weight aqueous sodium hydrogen carbonate solution. After washing once and then twice with water, the aqueous layer was neutralized. Next, the organic layer was separated and dried over anhydrous magnesium sulfate.
- reaction rate was measured in the same manner as in Example 1, and it was confirmed that the reaction rate was about 100%.
- reaction rate was measured in the same manner as in Example 1, and it was confirmed that the reaction rate was about 80%.
- the reaction rate (the conversion of the atariloyl group to the hydroxyl group of the phenoxyphosphazene conjugate) was found. Introduction) is about 50. / o was confirmed.
- Example 7 Example of synthesizing double bond phosphazene compound
- reaction rate was measured in the same manner as in Example 1, and it was confirmed that the reaction rate was about 60%.
- reaction rate was measured in the same manner as in Example 1, and it was confirmed that the reaction rate was about 55%.
- the components (a) to (d) shown below were mixed, and further uniformly mixed with a three-hole mill to prepare a photosensitive resin composition.
- Epoxy acrylate resin Novolak type; trade name K-48C, acid value 63, solid content 60% by weight 10 parts by weight
- each physical property of the obtained photosensitive resin composition was evaluated. As a result, the flame retardancy test passed, and when the solder heat resistance test was performed, the test passed 300 ° C under normal conditions and 290 ° C under moisture absorption conditions. Further, in the developability test, a hole of 100 ⁇ m ⁇ 100 ⁇ m square was developed and passed. The migration resistance was 5 ⁇ 10 8 ⁇ even after the lapse of 1000 hours, and no abnormality such as discoloration was observed in the copper foil. In addition, the adhesion was passed. The insulation resistance showed 2 ⁇ 10 1 ⁇ .
- a photosensitive resin composition was prepared in the same manner as in Example 10, except that the double bond phosphazene compound of Example 10 was replaced with the double bond phosphazene compound synthesized in Example 2.
- Each physical property of the obtained photosensitive resin composition was evaluated. As a result, the flame retardancy test passed, and when the solder heat resistance test was performed, it passed up to 305 ° C under normal conditions and up to 295 ° C under moisture absorption conditions. Further, in the developability test, a hole with a angle of 100 ⁇ 100 ⁇ was developed and passed. The migration resistance was 7 ⁇ 10 8 ⁇ even after the lapse of 1000 hours, and no abnormality such as discoloration was observed in the copper foil. In addition, the adhesion was passed. The insulation resistance was 3 310 1 ⁇ .
- a photosensitive resin composition was prepared in the same manner as in Example 10 except that the double bond phosphazene compound of Example 10 was replaced with the double bond phosphazene compound synthesized in Example 3.
- a photosensitive resin composition was prepared in the same manner as in Example 10, except that the double bond phosphazene compound of Example 10 was replaced with the double bond phosphazene compound synthesized in Example 4.
- a photosensitive resin composition was prepared in the same manner as in Example 10, except that the double bond phosphazene compound of Example 10 was replaced with the double bond phosphazene compound synthesized in Example 5.
- each physical property of the obtained photosensitive resin composition was evaluated.
- the flame retardancy test passed When the solder heat resistance test was performed, the test passed 310 ° C under normal conditions and passed 300 ° C under moisture absorbing conditions. Further, in the developability test, a hole with a angle of 100 ⁇ 100 ⁇ was developed and passed. The migration resistance was 7 ⁇ 10 8 ⁇ even after the lapse of 1000 hours, and no abnormality such as discoloration was observed in the copper foil. In addition, the adhesion was passed. The insulation resistance was 4 ⁇ 10 1 ⁇ .
- a photosensitive resin composition was prepared in the same manner as in Example 10, except that the double bond phosphazene compound of Example 10 was replaced with the double bond phosphazene compound synthesized in Example 6.
- a photosensitive resin composition was prepared in the same manner as in Example 10, except that the double bond phosphazene compound of Example 10 was replaced with the double bond phosphazene compound synthesized in Example 7.
- a photosensitive resin composition was prepared in the same manner as in Example 10, except that the double bond phosphazene compound of Example 10 was replaced with the double bond phosphazene compound synthesized in Example 8.
- a photosensitive resin composition was prepared in the same manner as in Example 10, except that the double bond phosphazene compound of Example 10 was replaced with the double bond phosphazene compound synthesized in Example 9.
- a photosensitive resin composition was prepared in the same manner as in Example 10 except that the double bond phosphazene compound of Example 10 was not used.
- the results of the evaluation of the physical properties of the obtained photosensitive resin composition were such that the flame retardancy test burned and failed. When a solder heat resistance test was performed, the test failed at 270 ° C under both normal conditions and moisture absorption conditions. Further, in the developability test, a hole having a size of 100 / mx100 / im was successfully developed and passed. The migration resistance was short-circuited after 100 hours. In addition, the adhesion was passed. Insulation resistance showed 2 ⁇ 10 ⁇ ⁇ .
- NK-oligo EA-1010 manufactured by Shin-Nakamura-Danigaku was added, and the mixture was heated and stirred at 60 ° C. for 6 hours.
- a beach bleeder containing 1 liter of methanol was spun at 11700i "pm, and the solution was poured and milled therein.
- the polyamide solution thus obtained was placed in a vat coated with Teflon (registered trademark) and dried in a vacuum oven under reduced pressure at 200 ° C and a pressure of 5000 Pa for 2 hours to obtain 26.0 g of a soluble polyimide resin.
- the polyamide solution thus obtained was placed in a vat coated with Teflon (registered trademark) and dried in a vacuum oven at 200 ° C. and a pressure of 5000 Pa for 2 hours under reduced pressure to obtain 39.0 g of a soluble polyimide resin.
- a photosensitive resin composition is prepared by mixing the following components (a) and (d), and the photosensitive resin composition is applied to a PET film and dried to form a film having a thickness of about 25%.
- a photosensitive dry film resist in a semi-cured state (B-stage state) of ⁇ m was prepared.
- a protective film was laminated on the photosensitive dry film resist with a PET film to form a three-layer structure sheet.
- Bisphenol A diglycidyl ether acrylic acid adduct (manufactured by Kyoeisha Chemical Co., Ltd .; trade name: epoxy ester 3000A) ⁇ ⁇ ⁇ 5 parts by weight
- Solder heat resistance There was no abnormality such as blistering or peeling after dipping at 270 ° C for 1 minute in both normal state and moisture absorption. In addition, there was no abnormality even when dipping for 30 seconds at 340 ° C for both normal and moisture absorption.
- the insulation resistance was 2 10 14 ⁇ in normal state and 7 10 13 ⁇ in moisture absorption.
- a photosensitive resin composition is prepared by mixing the following components (a) and (d), and the photosensitive resin composition is applied to a PET film and dried to form a film having a thickness of about 25%.
- a photosensitive dry film resist having a ⁇ m stage was prepared.
- a protective film was laminated on the photosensitive dry film resist with a PET film to form a three-layer structure sheet.
- Solder heat resistance There was no abnormality such as blistering or peeling after dipping at 270 ° C for 1 minute in both normal state and moisture absorption. In addition, even if it dipped at 350 ° C for 30 seconds, both the normal state and the moisture absorption did not cause any abnormal force.
- the insulation resistance was 5 X 10 14 ⁇ in normal state and 8 X 10 13 ⁇ in moisture absorption.
- a photosensitive resin composition is prepared by mixing the following components (a) and (d), and the photosensitive resin composition is applied to a PET film and dried to form a film having a thickness of about 25%.
- a photosensitive dry film resist having a ⁇ m stage was prepared.
- a protective film was laminated on the photosensitive dry film resist with a PET film to form a three-layer structure sheet.
- Bisphenol AE ⁇ modified (m + n ⁇ 30) diatalylate (manufactured by Shin-Nakamura Chemical Co., Ltd .; trade name: NK ester A—BPE-30) 5 parts by weight
- Bisphenol AE ⁇ modified (m + n 2) diatalylate (Toa Gosei Product name: Aronix M-21 1B) ⁇ ' ⁇ 10 parts by weight
- Solder heat resistance There was no abnormality such as blistering or peeling after dipping for 1 minute at 270 ° C in both normal state and moisture absorption. In addition, even if it dipped for 30 seconds at 360 ° C with both normal and moisture absorption, there was no abnormal force.
- Example 22 (a) Example 22-25 was obtained by replacing the double-bonded phosphazene compound of Example 3 with the double-bonded phosphazene compound of Example 4-17. Other conditions were the same as in Example 21.
- a developability test was performed on all of Examples 22 to 25. As a result, a fine hole of 100 / im ⁇ and a line of lOO / im / 100 / im were developed and passed. The adhesion was acceptable without any peeling, and the flame retardancy test was acceptable.
- migration resistance test shows all 1000 hours resistance of more than 10 8 Omega also after Example 22-25, abnormal dendrites or the like was observed.
- Example 22 The insulation resistance of Example 22 was 1 X 10 14 ⁇ in normal condition, 5 X 10 13 ⁇ in moisture absorption, and Example 23 was 2 X in normal condition.
- Example 24 had normal 3 310 14 ⁇ and moisture absorption 4 ⁇ 10 13 ⁇ .
- a photosensitive resin composition is prepared by mixing the following components (a) and (d), and the photosensitive resin composition is applied to a PET film and dried to form a film having a thickness of about 25%.
- a photosensitive dry film resist having a ⁇ m stage was prepared. With this PET film Then, a protective film was laminated on the photosensitive dry film resist to form a three-layer structure sheet.
- Solder heat resistance normal state: Both moisture absorption did not show any abnormality such as blistering or peeling after dipping at 270 ° C for 1 minute. In addition, both normal and moisture absorption showed no abnormalities even after dipping at 360 ° C for 30 seconds.
- the insulation resistance was 5 ⁇ 10 14 ⁇ in normal state and 7 ⁇ 10 13 ⁇ in moisture absorption.
- a photosensitive resin composition is prepared by mixing the following components (a) and (d), and the photosensitive resin composition is applied to a PET film and dried to form a film having a thickness of about 25%.
- a photosensitive dry film resist having a ⁇ m stage was prepared.
- a protective film was laminated on the photosensitive dry film resist with the PET film to form a three-layer structure sheet.
- the insulation resistance was 2 to 10 12 ⁇ in normal state and 7 to 10 ⁇ ⁇ in moisture absorption.
- a photosensitive resin composition was prepared and a photosensitive dry film resist as an example of a photosensitive resin film was manufactured by a method different from that described above.
- the specific production example is shown below.
- the methods for evaluating the physical properties of the organic solvent solutions of the photosensitive resin compositions obtained in Examples 27 to 35 and Comparative Examples 3 to 8 and the photosensitive film resist are described below.
- a solution of the photosensitive resin composition in an organic solvent was prepared such that the solid content weight was a material other than the organic solvent, that is, the above (G-1), Shows the total weight of (II-1), (I) and) components, and includes liquid materials even in solid content.
- the organic solvent solution of the photosensitive resin composition obtained in [Preparation 1 of the photosensitive resin composition] is adjusted so that the thickness after drying (the thickness of the photosensitive dry film resist) becomes 2025 ⁇ m.
- Coated on a support film As the support film, PET film (manufactured by Toray Industries, Inc.) A product name (Lumirror, thickness 25 / im) was used. Thereafter, the coating layer on the support film was dried at 100 ° C. for 2 minutes to remove dioxolan. As a result, a two-layer structure sheet composed of a photosensitive dry film resist / PET film (support film) was obtained. Note that the photosensitive dry film resist layer is in a semi-cured state (B-stage state).
- a polyethylene film (trade name: GF_1, manufactured by Tamapoly Co., Ltd., thickness: 40 xm) was rolled at a roll temperature of 2 ° C and immersed in a nip. Roll lamination was performed under the condition of a thickness of 75000 Pa'm to obtain a three-layer structure sheet having three layers of a protective film Z photosensitive dry film resist / PET film.
- the photosensitive dry film resist surface was placed on a 25 ⁇ m thick polyimide film (Abeki Noh AH manufactured by Kaneka Chemical Co., Ltd.). 100. C, at 75,000 Pa'm, he was a kid.
- the light support film was peeled off by exposing it to light having a wavelength of 400 ⁇ m by 600 mj / cm 2 , and was heated and cured in an oven at 180 ° C. for 2 hours.
- Polyimide film / photosensitive dry film resist laminate SAN manufactured by flame retardancy test Store Punolle in an environment of 85 ° C / 85% relative humidity for 100 hours. The stored sample is observed with an optical microscope at a magnification of 100 times to determine the presence or absence of bleed.
- an electrolytic copper foil (Mitsui Kinzoku Co., Ltd., thickness 38 xm) is soft-etched with a 10% by weight sulfuric acid aqueous solution for 1 minute (this is the step of removing the anti-fouling agent from the copper foil surface), washed with water, and then washed with ethanol. The surface was washed with acetone and dried. After the protective film of the photosensitive dry film resist was peeled off, it was laminated on the glossy surface of the electrolytic copper foil (after soft etching) at 100 ° C. and 75,000 Pa-m.
- a mask pattern depicting a fine square of lOO x lOO zm square and 200 x 200 ⁇ m square was placed, and light having a wavelength of 400 nm was exposed to 300 mjZcm 2 .
- a 1% by weight aqueous sodium hydroxide solution (liquid temperature of 40 ° C) was used using a spray developing machine (ES-655D, an etching machine manufactured by Sannodato Corporation) ), A spray pressure of 0.85 MPa, and a development time of 30 seconds to 180 seconds.
- the pattern formed by development was then washed with distilled water to remove the developer and dried. It was judged as acceptable if at least a square of 200 ⁇ 200 ⁇ m square was developed by observation with an optical microscope.
- Copper foil (electrolytic copper foil, manufactured by Mitsui Kinzoku Co., Ltd., thickness 35 ⁇ m) is cut into 5 cm squares, soft-etched with a 10% by weight aqueous sulfuric acid solution for 1 minute, washed with water, and washed with ethanol and acetone. And dried. Next, the protective film of the photosensitive dry film resist cut into a square of 4 cm was peeled off, and was laminated on the glossy surface of the above-mentioned electrolytic copper foil (after soft etching), and laminated at 100 ° C and 75,000 Pa'm.
- the photosensitive dry film resist surface of the bonded sample was exposed to light of 400 nm at a wavelength of 300 mJZcm 2 and then cured at 180 ° C. for 2 hours to be cured.
- This sampnole was 1) conditioned under normal conditions (24 hours in an environment of 20 ° C / 40% relative humidity) and 2) humidified (48 hours in an environment of 40 ° C / 85% RH). After humidity control, dipped in molten solder at 270 ° C or higher for 30 seconds, and observed whether blistering or peeling occurred at the interface between copper foil and photosensitive dry film resist. . What should be done by gradually increasing the temperature of the molten solder and dipping for 30 seconds every 10 ° C. Investigation was made to see if an abnormality occurred up to C. The maximum temperature at which no abnormality occurred was set as the dipping temperature for 30 seconds. Three If the 0 second dipping temperature was 300 ° C or higher, it was judged as acceptable.
- the weight-average molecular weight of the soluble polyimide resin (G-1) was calculated by size exclusion chromatography using HLC8220G PC manufactured by Tosoh Corporation in terms of polyethylene oxide. Further, the synthesis of the raw material phosphazene compound, the phenoxyphosphazene conjugate, and the crosslinked phenoxyphosphazene conjugate were performed in the same manner as in Synthesis Example 16 above.
- This solution was poured into 500 mL of methanol, and the precipitated resin component was pulverized by a mixer, washed with methanol, and dried to obtain 113.4 g of a double bond polyimide resin having an unsaturated double bond (methacryloyl group).
- This double bond polyimide resin had an acid equivalent of 1811 and a weight average molecular weight of 38,000.
- Diam-1 (trade name) manufactured by Gunei Chemical Co., Ltd. and DMF100g were added to prepare a DAM-1 DMF solution.
- 24.9 g (0.03 mol) of silicon diamine KF-8010 (trade name, manufactured by Shin-Etsu Silicone) was added to the DMF solution, and the mixture was vigorously stirred. After the solution became homogeneous, a solution of ESD A173g (0.30 mol) dissolved in DMF300g was further added and stirred vigorously for about 1 hour.
- the polyamic acid solution thus obtained was placed in a vat coated with a fluororesin and dried under reduced pressure at 200 ° C. and a pressure of 660 Pa for 2 hours in a vacuum oven to obtain 241.0 g of a soluble polyimide resin having a hydroxyl group. .
- the acid equivalent of this soluble polyimide resin was 475, and the weight average molecular weight was 26,000.
- Bisphenol A type epoxy resin manufactured by Japan Epoxy Resin Co., Ltd., trade name: Pico 8278 10 parts by weight
- DDM 4,4, -diaminodiphenylmethane
- the physical properties of the obtained photosensitive dry film resist were evaluated as follows.
- Bisphenol A type epoxy resin manufactured by Japan Epoxy Resin Co., Ltd., trade name: Pico 8278 10 parts by weight
- DDM 4,4, -diaminodiphenylmethane
- the physical properties of the obtained photosensitive dry film resist were evaluated as follows.
- the following components were mixed to prepare a solution of the photosensitive resin composition in an organic solvent, to prepare a photosensitive dry film resist in a B-stage state.
- the physical properties of the obtained photosensitive dry film resist were evaluated as follows. Flame retardancy test: Flame extinguished in an average of 3.0 seconds and passed.
- the polymer component having the largest content in the photosensitive resin composition is referred to as a base polymer.
- the polyamic acid solution thus obtained was placed in a vat coated with a fluororesin, and dried under reduced pressure at 200 ° C and a pressure of 660 Pa for 2 hours in a vacuum oven to obtain 315 g of a polyimide resin.
- This polyimide resin has no carboxyl group, no Z or hydroxyl group in the imide resin, and no photosensitive group is introduced.
- a photosensitive dry film resist was produced under exactly the same conditions except that the polyimide resin synthesized in Comparative Example 3 was used as the base polymer instead of the component (a) in Example 27.
- the physical properties of the obtained photosensitive dry film resist were evaluated as follows. Flame retardancy test: Flame extinguished in an average of 3.0 seconds and passed.
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US10/559,737 US8063245B2 (en) | 2003-06-05 | 2004-06-03 | Phosphazene compound, photosensitive resin composition and use thereof |
JP2005513241A JP4695512B2 (ja) | 2003-06-05 | 2004-06-03 | ホスファゼン化合物、及び感光性樹脂組成物並びにその利用 |
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JP2003-204023 | 2003-07-30 | ||
JP2003-204036 | 2003-07-30 | ||
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Also Published As
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JP4695512B2 (ja) | 2011-06-08 |
US8063245B2 (en) | 2011-11-22 |
WO2005019231A8 (ja) | 2005-10-20 |
US20060142542A1 (en) | 2006-06-29 |
JPWO2005019231A1 (ja) | 2007-10-04 |
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