WO2022202499A1 - 紫外線硬化性組成物およびその用途 - Google Patents
紫外線硬化性組成物およびその用途 Download PDFInfo
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- WO2022202499A1 WO2022202499A1 PCT/JP2022/011667 JP2022011667W WO2022202499A1 WO 2022202499 A1 WO2022202499 A1 WO 2022202499A1 JP 2022011667 W JP2022011667 W JP 2022011667W WO 2022202499 A1 WO2022202499 A1 WO 2022202499A1
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- NQSMEZJWJJVYOI-UHFFFAOYSA-N Methyl 2-benzoylbenzoate Chemical compound COC(=O)C1=CC=CC=C1C(=O)C1=CC=CC=C1 NQSMEZJWJJVYOI-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- 241000534944 Thia Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- IAXXETNIOYFMLW-COPLHBTASA-N [(1s,3s,4s)-4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl] 2-methylprop-2-enoate Chemical compound C1C[C@]2(C)[C@@H](OC(=O)C(=C)C)C[C@H]1C2(C)C IAXXETNIOYFMLW-COPLHBTASA-N 0.000 description 1
- HEQDCEOZBRONNB-UHFFFAOYSA-N [dimethyl(2-trimethoxysilylethyl)silyl]oxy-dimethyl-(2-trimethoxysilylethyl)silane Chemical compound CO[Si](OC)(OC)CC[Si](C)(C)O[Si](C)(C)CC[Si](OC)(OC)OC HEQDCEOZBRONNB-UHFFFAOYSA-N 0.000 description 1
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 description 1
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- 238000004458 analytical method Methods 0.000 description 1
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- 229960002130 benzoin Drugs 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- VYHBFRJRBHMIQZ-UHFFFAOYSA-N bis[4-(diethylamino)phenyl]methanone Chemical compound C1=CC(N(CC)CC)=CC=C1C(=O)C1=CC=C(N(CC)CC)C=C1 VYHBFRJRBHMIQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 125000000332 coumarinyl group Chemical class O1C(=O)C(=CC2=CC=CC=C12)* 0.000 description 1
- 125000003493 decenyl group Chemical group [H]C([*])=C([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
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- 238000011049 filling Methods 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012767 functional filler Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229940119545 isobornyl methacrylate Drugs 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- JUYQFRXNMVWASF-UHFFFAOYSA-M lithium;phenyl-(2,4,6-trimethylbenzoyl)phosphinate Chemical compound [Li+].CC1=CC(C)=CC(C)=C1C(=O)P([O-])(=O)C1=CC=CC=C1 JUYQFRXNMVWASF-UHFFFAOYSA-M 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical class [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 description 1
- YDKNBNOOCSNPNS-UHFFFAOYSA-N methyl 1,3-benzoxazole-2-carboxylate Chemical compound C1=CC=C2OC(C(=O)OC)=NC2=C1 YDKNBNOOCSNPNS-UHFFFAOYSA-N 0.000 description 1
- LUCXVPAZUDVVBT-UHFFFAOYSA-N methyl-[3-(2-methylphenoxy)-3-phenylpropyl]azanium;chloride Chemical compound Cl.C=1C=CC=CC=1C(CCNC)OC1=CC=CC=C1C LUCXVPAZUDVVBT-UHFFFAOYSA-N 0.000 description 1
- 125000005187 nonenyl group Chemical group C(=CCCCCCCC)* 0.000 description 1
- 229940065472 octyl acrylate Drugs 0.000 description 1
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- 125000001484 phenothiazinyl group Chemical class C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- WVIICGIFSIBFOG-UHFFFAOYSA-N pyrylium Chemical compound C1=CC=[O+]C=C1 WVIICGIFSIBFOG-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical compound C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical class C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 125000005369 trialkoxysilyl group Chemical group 0.000 description 1
- NRYWFNLVRORSCA-UHFFFAOYSA-N triethoxy(6-triethoxysilylhexyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCCCC[Si](OCC)(OCC)OCC NRYWFNLVRORSCA-UHFFFAOYSA-N 0.000 description 1
- UMFJXASDGBJDEB-UHFFFAOYSA-N triethoxy(prop-2-enyl)silane Chemical compound CCO[Si](CC=C)(OCC)OCC UMFJXASDGBJDEB-UHFFFAOYSA-N 0.000 description 1
- GFKCWAROGHMSTC-UHFFFAOYSA-N trimethoxy(6-trimethoxysilylhexyl)silane Chemical compound CO[Si](OC)(OC)CCCCCC[Si](OC)(OC)OC GFKCWAROGHMSTC-UHFFFAOYSA-N 0.000 description 1
- LFRDHGNFBLIJIY-UHFFFAOYSA-N trimethoxy(prop-2-enyl)silane Chemical compound CO[Si](OC)(OC)CC=C LFRDHGNFBLIJIY-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/08—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated side groups
- C08F290/14—Polymers provided for in subclass C08G
- C08F290/148—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/068—Polysiloxanes
-
- 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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/045—Polysiloxanes containing less than 25 silicon atoms
-
- 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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
-
- 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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C09D151/085—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds on to polysiloxanes
Definitions
- the present invention relates to UV latitudinal curable compositions curable by actinic rays, e.g.
- the present invention relates to an ultraviolet curable composition which gives a cured product having a low viscosity and excellent applicability.
- the curable composition of the present invention is suitable as an insulating material for electronic and electrical devices, especially as a material for use as a coating agent. Furthermore, it has excellent applicability and excellent wettability to substrates, and is useful as an injection molding material and an inkjet printing material.
- silicone resins Due to its high heat resistance and excellent chemical stability, silicone resins have been used as coating agents, potting agents, insulating materials, etc. for electronic and electrical devices. Among silicone resins, UV-curable silicone compositions have also been reported so far.
- Touch panels are used in various display devices such as mobile devices, industrial equipment, and car navigation systems. In order to improve the detection sensitivity, it is necessary to suppress the electrical influence from the light emitting parts such as light emitting diodes (LED) and organic EL devices (OLED). placed.
- LED light emitting diodes
- OLED organic EL devices
- thin display devices such as OLED have a structure in which many functional thin layers are laminated.
- studies have begun to improve the reliability of display devices, particularly flexible display devices as a whole, by laminating a highly flexible insulating layer on a touch screen layer.
- an inkjet printing method is adopted as a method for processing an organic layer. Therefore, materials that can be processed by the inkjet printing method are also required for the insulating layer.
- JP-A-2016-56330 discloses a UV-curable organopolysiloxane composition
- a polysiloxane having a methacryloxy functional group a polysiloxane having two or more acryloxy functional groups in one molecule, and a polysiloxane containing alkenyl groups at both ends. and a cured silicone gel obtained from the composition.
- a polysiloxane having three or more acryloxy functional groups in one molecule and a polysiloxane having two or more alkenyl groups in one molecule.
- a polysiloxane composition is disclosed. Both compositions are highly viscous, restricting processing methods and cannot be applied by injection molding and inkjet methods.
- the present invention is a curable composition containing silicon atoms, which has a high ability to adjust the mechanical properties of the product obtained by curing, and has excellent workability when applied to a substrate even if it is a solventless type. , and in particular to provide UV-curable compositions.
- the present invention comprises (A) 5 to 95 parts by mass of a compound having one or more acryloxy groups in one molecule, and (B) one or more UV-curable functional groups selected from the following (B1) and (B2) 95 to 5 parts by mass of organopolysiloxane having no (B1) an organopolysiloxane having 3 or more alkenyl groups in one molecule and having no UV-curable functional groups, (B2) UV rays obtained by using together an organopolysiloxane having two or more alkenyl groups in one molecule, a vinyl group content of 5% by mass or more, and no UV-curable functional group.
- the curable composition has a low viscosity without substantially using an organic solvent, is excellent in workability when applied to a substrate, and the cured product exhibits excellent ability to adjust mechanical properties. was discovered and completed.
- the present invention relates to UV-curable compositions comprising organosilicon compounds, particularly UV-curable organopolysiloxane compositions, which cure by forming bonds with UV-curable functional groups.
- the curing method is not limited to UV irradiation, and any method that allows the UV-curable functional group to undergo a curing reaction can be used.
- electron beam irradiation can be used to cure the composition of the present invention.
- the ultraviolet curable composition of the present invention is (A) 5 to 95 parts by mass of a compound having one or more acryloxy groups in one molecule, and (B) Organo having no ultraviolet curable functional group selected from (B1) and (B2) below Polysiloxane 95 to 5 parts by mass (B1) Organopolysiloxane having 3 or more alkenyl groups in one molecule and having no UV-curable functional group (B2) Having 2 or more alkenyl groups in one molecule and containing an organopolysiloxane having a vinyl group content of 5% by mass or more and having no UV-curable functional group, and a viscosity of the entire composition measured at 25°C using an E-type viscometer of 500 mPa ⁇ s or less, and the composition does not substantially contain an organic solvent. Unless otherwise specified in this specification, the viscosity of a substance is a value measured using an E-type viscometer at 25°C.
- the component (A) in the curable composition may be a compound having one acryloxy group or a mixture of two or more compounds having one acryloxy group.
- the component (A) may be a mixture of one or more compounds having one acryloxy group and one or more compounds having two or more acryloxy groups.
- the above component (A) may be a compound having one or more acryloxy groups and no silicon atoms.
- Component (B) in the curable composition has an average composition formula: R a R′ b SiO (4-ab)/2 (1) (wherein R is an alkenyl group, R' is a group selected from monovalent hydrocarbon groups excluding alkenyl groups, hydroxyl groups, and alkoxy groups, a and b are numbers satisfying the following conditions: 1 ⁇ a+b ⁇ 3 and 0.1 ⁇ a/(a+b) ⁇ 1.0, and have at least two R in the molecule. ) Linear, branched or cyclic organopolysiloxane represented by is preferred.
- the above component (B) has the following formula (2): (2) (In the formula, among all R 1 to R 8 groups, two or more alkenyl groups are present in the molecule; the other R 1 to R 8 are each independently unsubstituted or fluorine-substituted monovalent carbon is a hydrogen group; n is a numerical value of 1 or more and 1,000 or less); Average unit formula: (R 3 SiO 1/2 ) e (R 2 SiO 2/2 ) f (RSiO 3/2 ) g (SiO 4/2 ) h (3) (In the formula, each R is independently a group selected from an alkenyl group and an unsubstituted or fluorine-substituted monovalent hydrocarbon group, and among all R, at least two are alkenyl groups, ( g+h) is a positive number, e is 0 or a positive number, and f is a number within the range of 0 to 100).
- R is each independently a group selected from alkenyl groups and unsubstituted or fluorine-substituted monovalent hydrocarbon groups, x is an integer of 3 to 10, and at least 2 cyclic organopolysiloxane represented by (having one alkenyl group), and mixtures of these organopolysiloxanes, preferably one or more organopolysiloxanes having two or more alkenyl groups in the molecule.
- Component (B) above preferably contains a branched organopolysiloxane having (RSiO 3/2 ) units.
- the above component (B) is preferably an organopolysiloxane having 3 or more alkenyl groups in one molecule.
- the alkenyl group in component (B) above is preferably an alkenyl group having 3 to 8 carbon atoms.
- the viscosity of the entire composition measured at 25°C using an E-type viscometer is preferably in the range of 5 to 60 mPa ⁇ s.
- the viscosity of the composition as a whole measured at 25°C using an E-type viscometer is particularly preferably in the range of 5 to 30 mPa ⁇ s.
- the present invention further provides an insulating coating agent containing the above UV-curable composition.
- the UV-curable composition of the present invention is useful as an insulating coating agent.
- the present invention further provides a cured product of the above UV-curable composition. Also provided is a method of using the cured product as an insulating coating layer.
- the present invention further provides a display device, such as a liquid crystal display, an organic EL display, and an organic EL flexible display, including a layer comprising a cured product of the ultraviolet curable composition.
- a display device such as a liquid crystal display, an organic EL display, and an organic EL flexible display, including a layer comprising a cured product of the ultraviolet curable composition.
- the ultraviolet curable composition of the present invention is (A) 5 to 95 parts by mass of a compound having one or more acryloxy groups in one molecule, and (B) Organo having no ultraviolet curable functional group selected from (B1) and (B2) below Polysiloxane 95 to 5 parts by mass (B1) Organopolysiloxane having 3 or more alkenyl groups in one molecule and having no UV-curable functional group (B2) Having 2 or more alkenyl groups in one molecule and containing an organopolysiloxane having a vinyl group content of 5% by mass or more and having no UV-curable functional group as a curable essential component, and optionally a photoradical polymerization initiator and various additions It can contain ingredients selected from agents. However, the curable composition of the present invention is characterized by being substantially free of organic solvents.
- polysiloxane refers to a siloxane unit (Si—O) having a degree of polymerization of 2 or more, that is, having an average of 2 or more Si—O bonds per molecule. It includes siloxane oligomers such as disiloxanes, trisiloxanes, tetrasiloxanes, etc., to siloxane polymers with a higher degree of polymerization.
- Component (A) is a compound having one or more acryloxy groups in one molecule.
- the molecular structure is not limited as long as it can achieve this purpose, and may be linear, branched, cyclic, cage-like, or any other structure.
- the above component (A) has a viscosity of 1 to 500 mPa.s at 25°C. s, more preferably 1 to 100 mPa ⁇ s, particularly preferably 1 to 20 mPa ⁇ s, and 1 to 10 mPa ⁇ s. s is most preferred.
- the component (A) contains 1 to 4, preferably 1 to 3, more preferably 1 to 2 acryloxy groups per molecule.
- the acryloxy groups in the molecule there are no restrictions on the positions of the acryloxy groups in the molecule, and they may be located close to each other or apart from each other.
- the component (A) may be a single compound having one acryloxy group, or a mixture of two or more compounds having one acryloxy group.
- component (A) may be a mixture of one or more compounds having one acryloxy group and a compound having two or more acryloxy groups.
- component (A) may be a mixture of one or more compounds having one acryloxy group and one or more compounds having two or more acryloxy groups.
- compounds having one acryloxy group include isoamyl acrylate, octyl acrylate, dodecyl acrylate, lauryl acrylate, stearyl acrylate, diethylene glycol monoethyl ether acrylate, diethylene glycol monomethyl ether acrylate, 2-ethylhexyl acrylate, phenoxyethyl acrylate, diethylene glycol mono Phenyl ether acrylate, 4-hydroxybutyl acrylate, 2-hydroxypropyl acrylate, tetrahydrofurfuryl acrylate, isobornyl acrylate, dicyclopentanyl acrylate, dicyclopentenyl acrylate, 3,3,5-tricyclohexyl acrylate , one-end acryloxy-functional polydimethylsiloxane, one-end acryloxy-functional polydimethyldiphenylsiloxane copolymer, etc. These may be used alone or in combination of two or more
- the compound having one acryloxy group can be used alone or in combination of two or more, taking into consideration the viscosity, curability, hardness after curing, and glass transition temperature of the compound. Among them, 2-ethylhexyl acrylate, isobornyl acrylate and dicyclopentanyl acrylate are preferably used.
- compounds having two or more acryloxy groups include diethylene glycol diacrylate, triethylene glycol diacrylate, neopentyl glycol diacrylate, polyethylene glycol diacrylate, 1,4-bis(acryloyloxy)butane, 1,6- bis(acryloyloxy)hexane, 1,9-bis(acryloyloxy)nonane, trimethylolpropane triacrylate, tris(2-acryloyloxy)ethyl isosialate, pentaerythritol tetraacrylate, double-terminated acryloxy-functional polydimethylsiloxane, polydimethyldiphenylsiloxane copolymer with both ends acryloxy functional, polydimethyl(acryloxyalkylmethyl)siloxane copolymer with trimethylsilyl at both ends, polydimethyl(acryloxyalkylmethyl)siloxane copolymer with both ends acryloxy functional, etc. mentioned.
- the viscosity of the compound, curability, compatibility with the compound having one acryloxy group, hardness after curing, and glass transition temperature are taken into account, and the compounds may be used singly or in combination of two or more.
- Diethylene glycol diacrylate, 1,6-bis(acryloyloxy)hexane, trimethylolpropane triacrylate, double-terminated acryloxy-functional polydimethylsiloxanes can preferably be used, but compounds having no silicon atoms, namely diethylene glycol diacrylate, 1,6 - Bis(acryloyloxy)hexane, more preferably trimethylolpropane triacrylate.
- Component (B) is an organopolysiloxane having no UV-curable functional group and having an alkenyl group in the molecule, specifically, one or more alkenyl groups selected from the following (B1) and (B2) containing polysiloxane.
- (B1) an organopolysiloxane having 3 or more alkenyl groups in one molecule and no UV-curable functional group;
- (B2) Organopolysiloxane having two or more alkenyl groups per molecule, a vinyl group content of 5% by mass or more, and no UV-curable functional groups.
- the alkenyl groups in component (B) are preferably terminal alkenyl groups.
- the vinyl group content refers to the ratio of the mass of the vinyl group portion (CH 2 ⁇ CH—) of all alkenyl groups contained in the compound to the mass of the entire molecule.
- the above component (B) has the following average composition formula: R a R′ b SiO (4-ab)/2 (1) (wherein R is an alkenyl group, R' is a group selected from monovalent hydrocarbon groups excluding alkenyl groups, hydroxyl groups, and alkoxy groups, a and b are numbers satisfying the following conditions: 1 ⁇ a+b ⁇ 3 and 0.1 ⁇ a/(a+b) ⁇ 1.0, and have at least two R in the molecule. ) can be a linear, branched, or cyclic organopolysiloxane represented by
- alkenyl groups represented by R in formula (1) include alkenyl groups having 2 to 8 carbon atoms, specifically vinyl, allyl, butenyl, pentenyl, hexenyl, and octenyl groups.
- An alkenyl group having 3 to 8 carbon atoms is preferred, and a hexenyl group is particularly preferred.
- the linear, branched, or cyclic organopolysiloxane represented by the average composition formula has an average of at least two alkenyl groups (R) per molecule.
- the average number of alkenyl groups per molecule is preferably 3 to 10, more preferably 3 to 8, particularly preferably 4 to 8.
- R' is a group selected from a monovalent hydrocarbon group, a hydroxyl group and an alkoxy group
- the monovalent hydrocarbon group includes an unsubstituted monovalent hydrocarbon group and a fluorine-substituted monovalent hydrocarbon group. included.
- the unsubstituted or fluorine-substituted monovalent hydrocarbon group is preferably a group selected from unsubstituted or fluorine-substituted alkyl, cycloalkyl, arylalkyl, and aryl groups having 1 to 20 carbon atoms. be.
- alkyl group examples include groups such as methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, sec-butyl, pentyl, hexyl and octyl, with methyl and hexyl being particularly preferred.
- cycloalkyl group examples include cyclopentyl and cyclohexyl.
- arylalkyl group examples include benzyl and phenylethyl groups. Examples of the aryl group include a phenyl group and a naphthyl group.
- fluorine-substituted monovalent hydrocarbon groups examples include 3,3,3-trifluoropropyl and 3,3,4,4,5,5,6,6,6-nonafluorohexyl groups. .
- a 3,3,3-trifluoropropyl group is preferred as the fluorine-substituted monovalent hydrocarbon group.
- the organopolysiloxane represented by the above formula (1) has a viscosity of 1 to 1000 mPa.s at 25°C. s, 1 to 500 mPa ⁇ s, most preferably 1 to 200 mPa ⁇ s.
- the viscosity of the organopolysiloxane can be adjusted by varying the ratio of a and b in formula (1) and the molecular weight.
- the organopolysiloxane represented by formula (1) preferably has 3 to 50, more preferably 4 to 20, and particularly preferably 4 to 10 silicon atoms on average per molecule.
- component (B) organopolysiloxane is Formula (2) below: (2) It is a compound represented by
- the organopolysiloxane represented by formula (2) has an average of two or more alkenyl groups per molecule.
- an average of two or more per molecule are alkenyl groups.
- the structure of the alkenyl group is not limited to a specific chemical structure as long as it has a carbon-carbon double bond.
- the alkenyl group is particularly preferably a terminal alkenyl group, such as vinyl, allyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, and 4-vinyl.
- alkenyl groups having 2 to 20 carbon atoms such as phenyl groups.
- the alkenyl-containing group is preferably a group selected from vinyl group, allyl group, hexenyl group and octenyl group, and particularly preferably allyl group and hexenyl group.
- each of R 1 to R 8 other than the UV-curable functional group is independently an unsubstituted or fluorine-substituted monovalent hydrocarbon group, preferably an unsubstituted or It is a group selected from fluorine-substituted alkyl, cycloalkyl, arylalkyl, and aryl groups.
- alkyl group include groups such as methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, sec-butyl, pentyl, and octyl, with the methyl group being particularly preferred.
- Examples of the cycloalkyl group include cyclopentyl and cyclohexyl.
- Examples of the arylalkyl group include benzyl and phenylethyl groups.
- Examples of the aryl group include a phenyl group and a naphthyl group.
- Examples of fluorine-substituted monovalent hydrocarbon groups include 3,3,3-trifluoropropyl and 3,3,4,4,5,5,6,6,6-nonafluorohexyl groups. .
- a 3,3,3-trifluoropropyl group is preferred as the fluorine-substituted monovalent hydrocarbon group.
- n in formula (2) is preferably 1 to 1000 mPa ⁇ s, more preferably 1 to 500 mPa ⁇ s, particularly preferably 1 to 100 mPa ⁇ s, at 25° C. of the organopolysiloxane represented by formula (2). is a value that becomes A person skilled in the art can readily determine the value of n so that the viscosity of the organopolysiloxane of formula (2) is within the viscosity range described above, without the need for undue trial and error. However, in general, it is preferred that the number of silicon atoms per molecule is 3-150, especially 3-50, so that the compound of formula (2) has the desired viscosity.
- the number of alkenyl groups possessed by the organopolysiloxane of formula (2) which is the component (B) is 2 to 10, preferably 3 to 10, more preferably 3 to 8, and particularly preferably 3 to 8 on average per molecule as a whole. 4-8.
- the specific value of n at that time is 12 or less.
- the organopolysiloxane of formula (2) can be used alone or as a mixture of two or more.
- the viscosity of the mixture at 25° C. is preferably the viscosity described above.
- the compound of formula (1) above may also be a branched organopolysiloxane represented by the following average unit formula (3).
- each R is independently a group selected from an alkenyl group and an unsubstituted or fluorine-substituted monovalent hydrocarbon group, and at least two of all R are alkenyl groups.
- (g+h) is a positive number
- e is 0 or a positive number
- f is a number within the range of 0-100.
- the alkenyl group and monovalent hydrocarbon group are as defined for formula (2) above.
- the preferred viscosities of the organopolysiloxanes of formula (3) are also as specified above for the organopolysiloxanes of formula (2).
- alkoxy groups and silanol groups may remain in the molecule as long as the amount is small.
- the organopolysiloxane represented by formula (3) preferably has 4 to 30, particularly 6 to 20 silicon atoms per molecule.
- the number of alkenyl groups possessed by the organopolysiloxane represented by formula (3) is 2 to 10, preferably 3 to 10, more preferably 3 to 8, and particularly preferably 4 to 8 on average per molecule as a whole. is. As described above, when the number of alkenyl groups is two, it is necessary to control the number of silicon atoms and the number of substituents thereof, and design the molecule so that the vinyl group content is 5% by mass or more.
- component (B), particularly the organopolysiloxane of formula (3) is a branched organopolysiloxane having (RSiO 3/2 ) units.
- linear organopolysiloxane represented by (1) above, particularly formula (2) include both-end dimethylvinylsilylpolydimethylsiloxane, both-end dimethylvinylsilylpolydimethyl/diphenylsiloxane copolymer, both dimethylvinylsilyl-terminated polymethylphenylsiloxane, both-terminated dimethylhexenylsilylpolydimethylsiloxane, both-terminated trimethylsilylpolydimethyl/methylvinylsiloxane copolymer, both-terminated dimethylvinylsilylpolydimethyl/methylvinylsiloxane copolymer, both-terminated trimethylsilylpoly Dimethyl/methylhexenylsiloxane copolymer, both-terminated dimethylvinylsilylpolydimethyl/methylhexenylsiloxane copolymer, both-terminated dimethylvinyl
- branched organopolysiloxane represented by (1) above, particularly formula (3) include a polysiloxane composed of M Vi (dimethylvinylsiloxy) units and T (methylsiloxy) units, M Vi units and Q Polysiloxane consisting of (siloxy) units, M Polysiloxane consisting of Vi units, M (trimethylsilyl) units and Q units, Polysiloxane consisting of M Vi units, D (dimethylsiloxy) units and T units, M Vi units and M units and T units, polysiloxane composed of M Vi units and T Ph (phenylsiloxy) units, polysiloxane composed of M Vi units, M units and T Ph units, M Vi units, D units and T Ph units polysiloxane consisting of M Hex (dimethylhexenylsiloxy) units and T units, polysiloxane consisting of M Hex units and Q units, polysiloxane consisting of M Hex (di
- R is each independently a group selected from alkenyl groups and unsubstituted or fluorine-substituted monovalent hydrocarbon groups, x is an integer of 3 to 10, and at least 2 (having one alkenyl group).
- alkenyl group and the unsubstituted or fluorine-substituted monovalent hydrocarbon group that can be represented by R in formula (4) are as defined for formula (1) above.
- the preferred viscosity of the organopolysiloxane represented by formula (4) is also as defined above for the organopolysiloxane represented by formula (1).
- cyclic organopolysiloxane represented by formula (4) include 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane and 1,3,5-trimethyl -1,3,5-trihexenylcyclotrisiloxane, 1,3,5,7-tetramethyl-1,3,5,7-tetrahexenylcyclotetrasiloxane, 1,3,5,7,9-pentamethyl- 1,3,5,7,9-pentavinylcyclopentasiloxane and 1,3,5,7,9-pentamethyl-1,3,5,7,9-pentahexenylcyclopentasiloxane.
- the organopolysiloxanes represented by the above formulas (1) and (2) to (4) can be used singly or optionally in combination of two or more as the component (B).
- Component (B) is particularly one or more selected from the group consisting of the organopolysiloxane represented by the formula (2), the branched organopolysiloxane represented by the formula (3), and combinations thereof. It is preferred to use an organopolysiloxane of
- Compounds recommended as component (B) are both-terminated trimethylsilylpolydimethyl/methylhexenylsiloxane copolymer, both-terminated dimethylvinylsilylpolydimethyl/methylhexenylsiloxane copolymer, and both-terminated dimethylhexenylsilylpolydimethyl/methylhexenylsiloxane.
- Copolymer double-ended trimethylsilylpolymethylhexenylsiloxane, double-ended silanol polymethylhexenylsiloxane, polysiloxane consisting of M units, D Hex units and T units, polysiloxane consisting of M units, D Hex units and T Ph units, M Polysiloxane consisting of Hex units and T Ph units Polysiloxane consisting of M Hex units, D units and T Ph units Polysiloxane consisting of M units and T Hex units Polysiloxane consisting of D units and T Hex units T Hex It is one compound or a combination of two or more compounds selected from the group consisting of polysiloxanes consisting of units.
- polysiloxanes composed of M units, D 2 Hex units and T 2 Ph units, polysiloxanes composed of D 2 Hex units and T 3 Ph units, and polysiloxanes composed of T 2 Hex units are particularly preferably used.
- the mixing ratio of component (A) and component (B) is such that the total amount of component (A) and component (B) is 100% by mass, the ratio of component (A) is 5 to 95% by mass, and the ratio of component (B) is is 95 to 5% by mass.
- the ratio of components (A) and (B) is within this range, the viscosity of the curable composition is adjusted appropriately, good UV curability is maintained, and the mechanical properties of the resulting cured product, particularly tensile elongation, are improved. Large materials can be designed.
- By increasing the ratio of component (A) it is easy to design a cured product having a high hardness.
- a preferable proportion of component (A) is 15% by mass or more and 85% by mass or less, more preferably 20% by mass or more and 80% by mass or less, and still more preferably 25% by mass of the total amount of components (A) and (B). Above, 75 mass % or less.
- the ultraviolet curable composition of the present invention can achieve a viscosity suitable for a coating agent without substantially using an organic solvent by using each of the above components, and substantially does not use an organic solvent. It does not include As used herein, substantially free of organic solvent means that the content of organic solvent is less than 0.1% by mass of the entire composition, and is preferably analyzed using an analytical method such as gas chromatography. It means that it is below the limit. In the present invention, a desired viscosity can be achieved without using an organic solvent by adjusting the molecular structure and molecular weight of component (A) and component (B).
- a photopolymerization initiator can be added to the ultraviolet-curable composition of the present invention in addition to the above components (A) and (B).
- a photoradical polymerization initiator can be used as the photopolymerization initiator.
- the photo-radical polymerization initiator can cure the composition of the present invention by generating free radicals upon irradiation with ultraviolet rays or electron beams, which induce radical polymerization reactions.
- a polymerization initiator is usually unnecessary when the composition of the present invention is cured by electron beam irradiation.
- Radical photopolymerization initiators are roughly classified into photocleavage type and hydrogen abstraction type, but the photoradical polymerization initiator used in the composition of the present invention is arbitrarily selected from those known in the art. It can be selected and used, and is not particularly limited to a specific one.
- photoradical polymerization initiators include acetophenone, p-anisyl, benzyl, benzoin, benzophenone, 2-benzoylbenzoic acid, 4,4'-bis(diethylamino)benzophenone, 4,4'-bis(dimethylamino)benzophenone.
- benzoin methyl ether benzoin isopropyl ether, benzoin isobutyl ether, benzoin ethyl ether, 4-benzoylbenzoic acid, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenyl-1, 2'-biimidazole, methyl 2-benzoylbenzoate, 2-(1,3-benzodioxol-5-yl)-4,6-bis(trichloromethyl)-1,3,5-triazine, 2-benzyl -2-(dimethylamino)-4'-morpholinobtyrophenone, ( ⁇ )-camphorquinone, 2-chlorothioxanthone, 4,4'-dichlorobenzophenone, 2,2-diethoxyacetophenone, 2,2-dimethoxy-2- Phenylacetophenone, 2,4-diethylthioxanthene-9-one, diphenyl(
- Omnirad registered trademark
- 651, 184, 1173, 2959, 127, 907, 369, 369E, and 379EG alkylphenone photopolymerization initiator, IGM Resins B.V.
- Omnirad registered trademark
- TPO H acylphosphine oxide photoinitiator
- IGM RESINS B.V. Omnirad (registered trademark) MBF and 754 (intramolecular hydrogen abstraction type photoinitiator IGM Resins B.V.), Irgacure® OXE01 and OXE02 (oxime ester-based non-social polymerization initiators, BASF).
- the amount of the radical photopolymerization initiator to be added to the composition of the present invention is not particularly limited as long as the desired photopolymerization reaction or photocuring reaction occurs. It is used in an amount of 0.01 to 5% by weight, preferably 0.05 to 1% by weight.
- a photosensitizer can also be used in combination with the photoradical polymerization initiator.
- the use of a sensitizer can increase the photon efficiency of the polymerization reaction, making longer wavelength light available for the polymerization reaction compared to the use of the photoinitiator alone. It is known to be particularly effective when the coating thickness is relatively thick or when relatively long wavelength LED light sources are used.
- Sensitizers include anthracene compounds, phenothiazine compounds, perylene compounds, cyanine compounds, merocyanine compounds, coumarin compounds, benzylidene ketone compounds, (thio)xanthene or (thio)xanthone compounds such as isopropyl Thioxanthone, 2,4-diethylthioxanthone, alkyl-substituted anthracenes, squarium-based compounds, (thia)pyrylium-based compounds, porphyrin-based compounds, etc. are known, and any photosensitizer may be used in the curing of the present invention without being limited to these. can be used in sexual compositions.
- the cured product obtained from the curable composition of the present invention has the molecular chain lengths of component (A) and component (B), the molecular structure, the number of acryloxy groups per molecule of component (A), and the number of acryloxy groups per molecule of component (B).
- the desired physical properties of the cured product and the curing speed of the curable composition can be obtained, and the viscosity of the curable composition can be designed to a desired value.
- a cured product obtained by curing the curable composition of the present invention is also included in the scope of the present invention.
- the shape of the cured product obtained from the composition of the present invention is not particularly limited, and may be a thin coating layer, a molded product such as a sheet, or a specific site in an uncured state. It may be injected into and cured to form a filling, or may be used as a sealing material or an intermediate layer for laminates, display devices, or the like.
- the cured product obtained from the composition of the present invention is preferably in the form of injection-molded protective/adhesive layers and thin-film coating layers, particularly preferably thin-film insulating coating layers.
- the curable composition of the present invention is suitable for use as a coating agent or potting agent, particularly as an insulating coating agent or potting agent for electronic devices and electrical devices.
- the cured product obtained by curing the curable composition of the present invention is characterized by excellent mechanical properties, particularly tensile properties. Using a test piece with a thickness of 0.5 mm, it usually has a tensile elongation of 20% or more when evaluated at 25° C. and a tensile speed of 50 mm/min. By optimizing the curable composition, it is possible to increase the tensile elongation of the cured product to 100% or more, which is useful as a layer-forming material for flexible displays.
- the cured product obtained by curing the curable composition of the present invention can be designed to have a dielectric constant of less than 3.0, less than 2.8, etc.
- Chemical compositions can also be used to form coating layers with low dielectric constants.
- the viscosity of the composition as a whole must be , is 500 mPa ⁇ s or less at 25° C. when measured using an E-type viscometer.
- the viscosity is preferably 200 mPa ⁇ s or less, particularly 80 mPa ⁇ s or less, depending on the injection gap.
- the preferred viscosity range is 5 to 60 mPa s, more preferably 5 to 30 mPa s, and particularly preferably 5 to 20 mPa. ⁇ s.
- compounds having preferable viscosities can be used as respective components so that the viscosity of the entire composition has the desired viscosity.
- component (C) When the UV-curable organopolysiloxane composition of the present invention is applied as a coating agent to the substrate surface using any method, the wettability of the composition to the substrate is improved, and a defect-free coating film is formed.
- the composition of the present invention containing the components described above can further include component (C) selected from the following. It is particularly preferred to use an inkjet printing method as a method for coating a substrate with the composition of the invention. Accordingly, component (C) is a component that improves the wettability of the ultraviolet-curable organopolysiloxane composition of the present invention to substrates, and particularly significantly improves ink-jet printing properties.
- Component (C) is at least one compound selected from the group consisting of (C1), (C2) and (C3) below.
- Component (C1) is a silicon-free non-acrylic non-ionic surfactant, ie a non-acrylic non-ionic surfactant.
- a non-acrylic surfactant means that the surfactant does not have a (meth)acrylate group in its molecule.
- Surfactants that can be used as component (C1) include organic nonionic surfactants such as glycerin fatty acid esters, sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, alkyl glycosides, and acetylene glycol polyethers.
- Active agents, fluorine-based nonionic surfactants, and the like can be mentioned, and these can be used singly or in combination of two or more.
- Specific examples of the component (C1) include, as organic nonionic surfactants, Emulgen series and Rheodor series manufactured by Kao Corporation, Surfynol 400 series manufactured by Evonik Industries, and Olphine E series manufactured by Nissin Chemical Industry Co., Ltd.
- Fluorinated nonionic surfactants include FC-4400 series manufactured by 3M and Megafac 550 and 560 series manufactured by DIC Corporation. Among these, Surfynol 400 series and Olphine E series, which are alkynol polyethers, are particularly preferred.
- Component (C2) is a nonionic surfactant containing a silicon atom and having an HLB value of 4 or less.
- the HLB value is a value that represents the degree of affinity of a surfactant for water and an organic compound. /molecular weight) is used.
- Silicone polyethers having polyethers as hydrophilic moieties, glycerol silicones having (di)glycerol derivatives as hydrophilic moieties, and carbinol silicones having hydroxyethoxy groups as hydrophilic moieties are known as silicon-containing nonionic surfactants. .
- surfactants those with an HLB value of 4 or less, that is, those with a hydrophilic moiety mass fraction of 20% by mass or less, are preferably used in the composition of the present invention.
- carbinol silicone is particularly preferred.
- Component (C3) is a silicone oil having a viscosity of 90 mPa ⁇ s or less at 25°C.
- silicone oils include both-terminated trimethylsilyl-polydimethylsiloxane, both-terminated dimethylvinylsilyl-polydimethylsiloxane, both-terminated trimethylsilyl-dimethylsiloxy/methylvinylsiloxy copolymer, both-terminated dimethylvinylsilyl-dimethylsiloxy/methylvinylsiloxy copolymer.
- a preferable viscosity range of the silicone oil is 2 to 50 mPa ⁇ s, a more preferable range is 2 to 30 mPa ⁇ s, and a further preferable viscosity range is 5 to 20 mPa ⁇ s.
- the value of the viscosity here is the value measured at 25° C. using the rotational viscometer described in the Examples.
- the above-mentioned components (C1) to (C3) can use one or a combination of two or more thereof.
- the amount of component (C) to be added to the curable composition is not particularly limited.
- the total of (C3) (collectively referred to as component (C)) is preferably 0.05% by mass or more and 1% by mass or less.
- component (C) is less than 0.05% by mass with respect to 100% by mass of the total amount of components (A) and (B)
- the effect of improving the wettability of the curable composition to the substrate is obtained.
- component (C) exceeds 1% by mass with respect to the total amount of 100% by mass of components (A) and (B)
- component (C) will be removed from the cured product after curing. This is because there is a risk that the bleed-out of the
- the silicone oil of the component (C3) can be used alone, or the component (C3) can be used in combination with one or more components selected from the group consisting of the component (C1) and the component (C2). It is particularly preferred to use component (C3) alone as component (C).
- additives include, but are not limited to, the following.
- Adhesion imparting agent Adhesion promoters can be added to the composition of the present invention to improve adhesion and adhesion to substrates in contact with the composition.
- an adhesion-imparting agent may be added to the curable composition of the present invention. is preferred. Any known adhesion promoter can be used as the adhesion promoter as long as it does not inhibit the curing reaction of the composition of the present invention.
- adhesion promoters examples include trialkoxysiloxy groups (e.g., trimethoxysiloxy group, triethoxysiloxy group) or trialkoxysilylalkyl groups (e.g., trimethoxysilylethyl group, triethoxysilylethyl group) and a hydrosilyl group or an alkenyl group (e.g., vinyl group, allyl group), or an organosiloxane oligomer having a linear, branched or cyclic structure with about 4 to 20 silicon atoms; trialkoxy Organosilanes having a siloxy group or a trialkoxysilylalkyl group and a methacryloxyalkyl group (e.g., 3-methacryloxypropyl group), or organosilanes having a linear, branched or cyclic structure having about 4 to 20 silicon atoms Siloxane oligomer; trialkoxysiloxy group
- the amount of the adhesion promoter added to the curable composition of the present invention is not particularly limited. It is preferably in the range of 0.01 to 5 parts by mass, or preferably in the range of 0.01 to 2 parts by mass.
- Additives may be added to the composition of the present invention in addition to or instead of the adhesion imparting agent described above.
- Additives that can be used include leveling agents, silane coupling agents that are not included in the adhesiveness imparting agents described above, ultraviolet absorbers, antioxidants, polymerization inhibitors, fillers (reinforcing fillers, insulating and functional fillers such as thermally conductive fillers). Suitable additives can be added to the composition of the present invention, if desired. Further, a thixotropic agent may be added to the composition of the present invention as necessary, particularly when used as a potting agent or sealing material.
- the UV-curable organopolysiloxane composition of the present invention can be cured not only by ultraviolet rays but also by electron beams, which is also an aspect of the present invention.
- the curable composition of the present invention has a low viscosity and is particularly useful as a material for forming insulating layers that constitute various articles, especially electronic devices and electrical devices.
- the composition of the present invention is coated on a substrate, or sandwiched between two substrates, at least one of which is made of a material that transmits ultraviolet rays or electron beams, and is irradiated with ultraviolet rays or electron beams.
- the material can be cured to form an insulating layer.
- the composition of the present invention can be patterned when applied to a substrate and then cured, or the composition can be applied to a substrate and cured with UV or electron beam radiation.
- the stiffening layer according to the present invention is an insulating layer, it can be designed to have a low dielectric constant of less than 3.0.
- the curable composition of the present invention is particularly suitable as a material for forming insulating layers of display devices such as touch panels and displays because the cured product obtained therefrom has good transparency.
- the insulating layer may form any desired pattern, as described above, if desired.
- a display device such as a touch panel and a display including an insulating layer obtained by curing the ultraviolet-curable organopolysiloxane composition of the present invention is also an aspect of the present invention.
- the curable composition of the present invention can be used to coat an article and then cured to form an insulating coating layer (insulating film). Therefore, the composition of the present invention can be used as an insulating coating agent. A cured product formed by curing the curable composition of the present invention can also be used as an insulating coating layer.
- the insulating film formed from the curable composition of the present invention can be used for various purposes. In particular, it can be used as a component of electronic devices or as a material used in the process of manufacturing electronic devices. Electronic devices include electronic equipment such as semiconductor devices and magnetic recording heads.
- the curable composition of the present invention can be used for semiconductor devices such as LSI, system LSI, DRAM, SDRAM, RDRAM, D-RDRAM, insulating films for multi-chip module multilayer wiring boards, interlayer insulating films for semiconductors, and etching stopper films. , a surface protective film, a buffer coat film, a passivation film in LSI, a cover coat for flexible copper-clad plates, a solder resist film, and a surface protective film for optical devices.
- the UV-curable composition of the present invention is also suitable for use as a potting agent, particularly an insulating potting agent for electronic devices and electrical devices.
- composition of the present invention can be used as a material for forming a coating layer on a substrate surface, especially using an inkjet printing method, in which case the composition of the present invention contains component (C) as described above. is particularly preferred.
- Viscosity of curable composition The viscosity (mPa ⁇ s) of the composition at 25° C. was measured using a rotational viscometer (E-type viscometer VISCONIC EMD manufactured by Tokimec Co., Ltd.).
- [Dielectric constant of cured organopolysiloxane] A tin foil having a diameter of 33 mm and a thickness of 0.007 mm was crimped onto both surfaces of the prepared organopolysiloxane cured product. In order to improve the adhesiveness between the cured product and the foil, they were pressure-bonded via a very small amount of silicone oil, if necessary. The capacitance was measured at room temperature and 100 KHz with an E4990A precision impedance analyzer manufactured by Keysight Technologies, to which parallel plate electrodes with a diameter of 30 mm were connected. The dielectric constant was calculated using the measured capacitance value, the separately measured thickness of the cured product, and the electrode area value.
- An ultraviolet curable composition having the composition (parts by weight) shown in Tables 1 and 2 was prepared using the following components.
- the ultraviolet curable compositions of the present invention have a viscosity at 25° C. that is applied to a substrate as an injection molding material and as a coating agent, particularly by inkjet printing. It has a suitable viscosity for coating and high transparency.
- the present composition has good wettability with respect to substrates, and the wettability can be further improved by adding the component (C).
- the cured product obtained from the composition of the present invention has a high tensile elongation and excellent flexibility. Also, the cured product obtained from the composition of the invention exhibits low dielectric properties.
- composition containing no component (A) (Comparative Example 1) and the composition having a low alkenyl content in the component (B) (Comparative Example 2) have insufficient UV curability, and thus are not suitable for industrial use. A cured product cannot be obtained under standard curing conditions.
- the ultraviolet-curable composition of the present invention is suitable for the above-mentioned uses, particularly as a material for forming an insulating layer of display devices such as touch panels and displays, especially flexible displays.
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Abstract
Description
(B)下記(B1)および(B2)から選択される一種以上の紫外線硬化性官能基を有しないオルガノポリシロキサン 95~5質量部
(B1)一分子中に3個以上のアルケニル基を有し、紫外線硬化性官能基を有しないオルガノポリシロキサン、
(B2)一分子中に2個以上のアルケニル基を有し、ビニル基の含有率が5質量%以上であり、かつ紫外線硬化性官能基を有しないオルガノポリシロキサンを併用することによって得られる紫外線硬化性組成物が、実質的に有機溶媒を使用しなくても、低い粘度を有し、基材へ塗布する場合の作業性に優れ、かつその硬化物が優れた力学物性調整能を示すことを発見して完成したものである。
(A)一分子中に1個以上のアクリロキシ基を有する化合物 5~95質量部、および
(B)下記(B1)および(B2)から選択される一種以上の紫外線硬化性官能基を有しないオルガノポリシロキサン 95~5質量部
(B1)一分子中に3個以上のアルケニル基を有し、紫外線硬化性官能基を有しないオルガノポリシロキサン
(B2)一分子中に2個以上のアルケニル基を有し、ビニル基の含有率が5質量%以上であり、かつ紫外線硬化性官能基を有しないオルガノポリシロキサン
を含み、E型粘度計を用いて25℃で測定した組成物全体の粘度が500mPa・s以下であり、かつ組成物は有機溶剤を実質的に含まないことを特徴とするものである。
なお、本明細書において別段の規定がない限り、物質の粘度は25℃においてE型粘度計を使用して測定した値である。
RaR’bSiO(4-a―b)/2 (1)
(式中、Rは、アルケニル基であり、
R’は、アルケニル基を除く一価炭化水素基、水酸基、及びアルコキシ基から選ばれる基であり、
a及びbは次の条件:1≦a+b<3及び0.1≦a/(a+b)≦1.0を満たす数であり、分子中に少なくとも2個のRを有する。)
で表される直鎖状、分岐状、又は環状のオルガノポリシロキサンであることが好ましい。
(式中、全てのR1~R8基のうち、アルケニル基は分子中に2個以上存在し;その他のR1からR8はそれぞれ独立に、非置換又はフッ素で置換された一価炭化水素基であり;nは、1以上1,000以下の数値である)で表されるオルガノポリシロキサン、
平均単位式:
(R3SiO1/2)e(R2SiO2/2)f(RSiO3/2)g(SiO4/2)h (3)
(式中、Rは、それぞれ独立に、アルケニル基及び非置換又はフッ素で置換された一価炭化水素基から選ばれる基であり、全てのRのうち、少なくとも2個はアルケニル基であり、(g+h)は正数であり、eは0又は正数であり、fは0~100の範囲内の数である)で表される分岐状オルガノポリシロキサン、
下記式(4):
(式中、Rは、それぞれ独立に、アルケニル基及び非置換又はフッ素で置換された一価炭化水素基から選ばれる基であり、xは、3~10の整数であり、分子中に少なくとも2個のアルケニル基を有する)で表される環状オルガノポリシロキサン、
及びこれらのオルガノポリシロキサンの混合物からなる群から選択される、分子内にアルケニル基を2個以上有する1種類以上のオルガノポリシロキサンであることが好ましい。
本発明の紫外線硬化性組成物は、
(A)一分子中に1個以上のアクリロキシ基を有する化合物 5~95質量部、および
(B)下記(B1)および(B2)から選択される一種以上の紫外線硬化性官能基を有しないオルガノポリシロキサン 95~5質量部
(B1)一分子中に3個以上のアルケニル基を有し、紫外線硬化性官能基を有しないオルガノポリシロキサン
(B2)一分子中に2個以上のアルケニル基を有し、ビニル基の含有率が5質量%以上であり、かつ紫外線硬化性官能基を有しないオルガノポリシロキサン
とを硬化性必須成分として含有し、必要に応じて、光ラジカル重合開始剤及び各種添加剤から選択される成分を含むことができる。但し、本発明の硬化性組成物は、有機溶剤を実質的に含まないことを特徴とする。
成分(A)は、一分子中に1個以上のアクリロキシ基を有する化合物である。この目的を達成できる限りその分子構造に制限はなく、直鎖状、分岐状、環状、かご状等、任意のものであることができる。
成分(B)は紫外線硬化性官能基を有さず、分子内にアルケニル基を有するオルガノポリシロキサンであり、具体的には、下記(B1)および(B2)から選択される一種以上のアルケニル基含有ポリシロキサンである。
(B1)一分子中に3個以上のアルケニル基を有し、紫外線硬化性官能基を有しないオルガノポリシロキサン、
(B2)一分子中に2個以上のアルケニル基を有し、ビニル基の含有率が5質量%以上であり、かつ紫外線硬化性官能基を有しないオルガノポリシロキサン。
RaR’bSiO(4-a―b)/2 (1)
(式中、Rは、アルケニル基であり、
R’は、アルケニル基を除く一価炭化水素基、水酸基、及びアルコキシ基から選ばれる基であり、
a及びbは次の条件:1≦a+b<3及び0.1≦a/(a+b)≦1.0を満たす数であり、分子中に少なくとも2個のRを有する。)
で表される直鎖状、分岐状、又は環状のオルガノポリシロキサンであることができる。
平均単位式:
(R3SiO1/2)e(R2SiO2/2)f(RSiO3/2)g(SiO4/2)h (3)
式(3)中、Rは、それぞれ独立に、アルケニル基及び非置換又はフッ素で置換された一価炭化水素基から選ばれる基であり、全てのRのうち、少なくとも2個はアルケニル基であり、(g+h)は正数であり、eは0又は正数であり、fは0~100の範囲内の数である。
(式中、Rは、それぞれ独立に、アルケニル基及び非置換又はフッ素で置換された一価炭化水素基から選ばれる基であり、xは、3~10の整数であり、分子中に少なくとも2個のアルケニル基を有する)で表される環状オルガノポリシロキサンであってもよい。
成分(B)としては、特に、上記式(2)で表されるオルガノポリシロキサン、式(3)で表される分岐状オルガノポリシロキサン、及びそれらの組み合わせからなる群から選択される1種以上のオルガノポリシロキサンを用いることが好ましい。
成分(A)と成分(B)の混合比率は、成分(A)と成分(B)の総量100質量%に対し、成分(A)の割合は5~95質量%、成分(B)の割合は95~5質量%である。成分(A)と(B)の割合がこの範囲にある場合、硬化性組成物の粘度を適正にし、良好な紫外線硬化性を保持し、かつ得られる硬化物の力学特性、特に引張伸度の大きな材料を設計することができる。成分(A)の比率を高くすることにより、硬化物の硬度を高く設計し易い。成分(A)の好ましい割合は、成分(A)及び(B)の合計量の15質量%以上、85質量%以下、より好ましくは20質量%以上、80質量%以下、さらに好ましくは25質量%以上、75質量%以下である。
本発明の紫外線硬化性組成物は、前記の各成分を使用することで、有機溶剤を実質的に使用することなく、コーティング剤に適した粘度を達成することができ、実質的に有機溶剤を含まないものである。本明細書において、有機溶剤を実質的に含まないとは、有機溶剤の含有量が組成物全体の0.1質量%未満であり、好ましくは、ガスクロマトグラフィーなどの分析方法を使用して分析限界以下であることをいう。本発明においては、成分(A)及び成分(B)の分子構造及び分子量を調節することによって、有機溶剤を用いなくても、所望の粘度を達成することができる。
本発明の紫外線硬化性オルガノポリシロキサン組成物をコーティング剤として基材表面に任意の方法を用いて適用したときに、基材への組成物の濡れ性を向上させて、欠陥のない塗膜を形成させるためには、上述した成分を含む本発明の組成物にさらに以下のものから選択される成分(C)を添加することができる。本発明の組成物を基材にコーティングするための方法として、インクジェット印刷法を使用することが特に好ましい。したがって、成分(C)は、本発明の紫外線硬化性オルガノポリシロキサン組成物の基材への濡れ性を向上させ、特にインクジェット印刷特性を著しく改良せしめる成分である。成分(C)は、以下の(C1)、(C2)、および(C3)からなる群より選択される少なくとも1種の化合物である。
成分(C1)は、ケイ素原子を含まず、アクリル系でない非イオン性界面活性剤、すなわち非アクリル系非イオン性界面活性剤である。非アクリル系とは、界面活性剤がその分子内に(メタ)アクリレート基を有していないものをいう。成分(C1)として用いることができる界面活性剤として、グリセリン脂肪酸エステル、ソルビタン脂肪酸エステル、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキルフェニルエーテル、アルキルグリコシド、アセチレングリコールポリエーテル等の有機系非イオン性界面活性剤、およびフッ素系非イオン性界面活性剤等を挙げることができ、これらの1種又は2種以上を組み合わせて用いることができる。成分(C1)の具体例としては、有機系非イオン性界面活性剤として花王株式会社製エマルゲンシリーズ、同レオドールシリーズ、エボニックインダストリーズ製サーフィノール400シリーズ、日信化学工業株式会社製オルフィンEシリーズが挙げられ、フッ素系非イオン性界面活性剤として3M製FC-4400シリーズ、DIC株式会社製メガファック550および560シリーズが挙げられる。
これらの中でも、特にアルキノールポリエーテルである、サーフィノール400シリーズ、オルフィンEシリーズが好ましい。
上記成分に加えて、所望によりさらなる添加剤を本発明の組成物に添加してもよい。添加剤としては、以下に挙げるものを例示できるが、これらに限定されない。
本発明の組成物には、組成物に接触している基材に対する接着性や密着性を向上させるために接着促進剤を添加することができる。本発明の硬化性組成物をコーティング剤、シーリング材などの、基材に対する接着性又は密着性が必要な用途に用いる場合には、本発明の硬化性組成物に接着性付与剤を添加することが好ましい。この接着促進剤としては、本発明の組成物の硬化反応を阻害しない限り、任意の公知の接着促進剤を用いることができる。
本発明の組成物には、上述した接着性付与剤に加えて、あるいは接着性付与剤に代えて、所望によりその他の添加剤を添加してもよい。用いることができる添加剤としては、レベリング剤、上述した接着性付与剤として挙げたものに含まれないシランカップリング剤、紫外線吸収剤、酸化防止剤、重合禁止剤、フィラー(補強性フィラー、絶縁性フィラー、および熱伝導性フィラー等の機能性フィラー)などが挙げられる。必要に応じて、適切な添加剤を本発明の組成物に添加することができる。また、本発明の組成物には必要に応じて、特にポッティング剤又はシール材として用いる場合には、チキソ性付与剤を添加してもよい。
本発明の紫外線硬化性オルガノポリシロキサン組成物は、紫外線による硬化だけでなく、電子線を用いて硬化させることもでき、それも本発明の一つの態様である。
回転粘度計(トキメック株式会社製、E型粘度計VISCONIC EMD)を使用して、25℃における組成物の粘度(mPa・s)を測定した。
硬化性組成物及びそれから得られた硬化物の外観を、目視によって観察して評価した。
下記表1に記載した量の各材料を褐色プラスチック製容器に入れ、プラネタリーミキサーを使用して良く混合し、硬化性組成物を調製した。
硬化性組成物2マイクロリットルを窒化ケイ素コートガラス基板に滴下し、滴下直後および15秒経過後の硬化性組成物の接触角(単位:°)を、協和界面化学株式会社製の接触角測定装置DM-700により23℃にて測定した。
硬化性組成物約0.05gをガラス製試料台にたらし、せん断回転治具-試料台間ギャップを100ミクロンに設定した。アントンパール製MCR302を用い、405nmの光を30秒間照射(積算光量:2J/cm2)しながら、試料にせん断応力をかけ(せん断ひずみ0.05%、周波数1Hz)、貯蔵弾性率を測定した。値がほぼ一定になる、照射開始約2分後の弾性率値(単位:Pa)を記録した。。
厚さ0.5mmのスペーサーを挟んだ二枚のガラス基板の間に、約0.2gの硬化性組成物を注入した。外側から片方のガラス基板を通して、波長405nmのLED光を2J/cm2のエネルギー量で照射することにより、組成物を硬化させて、長辺50mm、厚さ0.5mmの板状の硬化物を作製した。短片を三等分することにより、10×50×0.5(厚さ)mm3の短冊状の引張試験片を調製した。
上記オルガノポリシロキサン硬化物から作製した引張試験片を用い、島津製作所株式会社製オートグラフAGS-Xにより、25℃にて試験速度50mm/minで評価した。測定値として破断伸度(単位:%)を記録した。
フッ素ポリマー系剥離剤がコーティングされたPETフィルム上に、内径40mmの円形の空孔を有する厚さ1mmの金型を載せ、その空孔中に約1.3gの硬化性組成物を流し込んだ。当該組成物の上に、前記と同様のPETフィルムをかぶせ、さらにその上に厚さ10mmのガラス板を載せた。この上から、波長405nmのLED光を2J/cm2のエネルギー量で照射することにより、組成物を硬化させて、直径40mm、厚さ1mmの円板状オルガノポリシロキサン硬化物を作製した。
作製したオルガノポリシロキサン硬化物の上に両面に直径33mm、厚さ0.007mmの錫箔を圧着した。該硬化物と箔の密着性を改善するため、必要に応じ、微量のシリコーンオイルを介して圧着した。直径30mmの平行板電極を接続したキーサイトテクノロジー製E4990Aプレシジョンインピーダンス・アナライザにて室温、100KHzにおける静電容量を測定した。測定した静電容量の値と、別途測定した硬化物の厚さ、及び電極面積の値を用いて、比誘電率を算出した。
下記の各成分を用いて、表1および表2に示す組成(質量部)の紫外線硬化性組成物を調製した。
(A1)イソボルニルアクリレート(単官能)
(A2)2-エチルヘキシルアクリレート(単官能)
(A3)両末端アクリロキシ官能性ポリジメチルシロキサン(2官能):平均重合度16
(A4)ドデシルアクリレート(単官能)
(A5)ジエチレングリコールジアクリレート(2官能)
(A6)1,6-ビス(アクリロイルオキシ)ヘキサン(2官能)
(A7)トリメチロールプロパントリアクリレート(3官能)
(a)イソボルニルメタクリレート(単官能)
(B1-1)ジメチルビニルシロキシ末端基を4個有する分岐状ポリジメチルシロキサン(官能基数4)
(B1-2)両末端シラノールポリメチルヘキセニルシロキサン(平均官能基数9)
(B1-3)M0.06MVi 0.55Q0.39で表される分岐状ポリシロキサン(平均官能基数10)
(B1-4)ポリヘキセニルシルセスキオキサン(平均官能基数7.7)
(B1-5)M0.18DHex 0.50TPh 0.32で表される分岐状ポリシロキサン(平均官能基数8)
(B2)両末端ジメチルビニルポリジメチルシロキサン(官能基数2;(CH=CH)基含有率:8.3%)
(b)両末端ジメチルビニルポリジメチルシロキサン(官能基数2;(CH=CH)基含有率:0.4%)
(C)DOWSIL(TM) SH 200 Fluid (20 cSt)(ダウ・ケミカル・カンパニー製)
(D)OMNIRAD TPO-L(IGM Resins製)
(E)ジブチルヒドロキシトルエン
Claims (15)
- (A)一分子中に1個以上のアクリロキシ基を有する化合物 5~95質量部、および
(B)下記(B1)および(B2)から選択される一種以上の紫外線硬化性官能基を有しないオルガノポリシロキサン 95~5質量部
(B1)一分子中に3個以上のアルケニル基を有し、紫外線硬化性官能基を有しないオルガノポリシロキサン、
(B2)一分子中に2個以上のアルケニル基を有し、ビニル基の含有率が5質量%以上であり、かつ紫外線硬化性官能基を有しないオルガノポリシロキサン
を含有してなり、組成物中に有機溶剤を実質的に含まず、E型粘度計を用いて25℃で測定した組成物全体の粘度が500mPa・s以下であることを特徴とする、紫外線硬化性組成物。 - 成分(A)が、アクリロキシ基を1個有する化合物またはアクリロキシ基を1個有する二種以上の化合物の混合物である、請求項1に記載の紫外線硬化性組成物。
- 成分(A)が、アクリロキシ基を1個有する一種以上の化合物とアクリロキシ基を2個以上有する一種以上の化合物の混合物である、請求項1または2に記載の紫外線硬化性組成物。
- 成分(A)が、1個以上のアクリロキシ基を有し、ケイ素原子を有しない化合物である、請求項1~3のいずれか1項に記載の紫外線硬化性組成物。
- 成分(B)が、平均組成式:
RaR’bSiO(4-a―b)/2 (1)
(式中、Rは、アルケニル基であり、
R’は、アルケニル基を除く一価炭化水素基、水酸基、及びアルコキシ基から選ばれる基であり、
a及びbは次の条件:1≦a+b<3及び0.1≦a/(a+b)≦1.0を満たす数であり、分子中に少なくとも2個のRを有する。)
で表される直鎖状、分岐状、又は環状のオルガノポリシロキサンである、請求項1~4のいずれか1項に記載の紫外線硬化性組成物。 - 成分(B)のオルガノポリシロキサンが、下記式(2):
(式中、全てのR1~R8基のうち、アルケニル基は分子中に2個以上存在し;その他のR1からR8はそれぞれ独立に、非置換又はフッ素で置換された一価炭化水素基であり;nは、1以上1,000以下の数値である)で表されるオルガノポリシロキサン、
平均単位式:
(R3SiO1/2)e(R2SiO2/2)f(RSiO3/2)g(SiO4/2)h (3)
(式中、Rは、それぞれ独立に、アルケニル基及び非置換又はフッ素で置換された一価炭化水素基から選ばれる基であり、全てのRのうち、少なくとも2個はアルケニル基であり、(g+h)は正数であり、eは0又は正数であり、fは0~100の範囲内の数である)で表される分岐状オルガノポリシロキサン、
下記式(4):
(式中、Rは、それぞれ独立に、アルケニル基及び非置換又はフッ素で置換された一価炭化水素基から選ばれる基であり、xは、3~10の整数であり、分子中に少なくとも2個のアルケニル基を有する)で表される環状オルガノポリシロキサン、
及びこれらのオルガノポリシロキサンの混合物からなる群から選択される、分子内にアルケニル基を2個以上有する1種類以上のオルガノポリシロキサンである、請求項1~5のいずれか1項に記載の紫外線硬化性組成物。 - 成分(B)が、(RSiO3/2)単位を有する分岐状オルガノポリシロキサンを含む、請求項1~6のいずれか1項に記載の紫外線硬化性組成物。
- 成分(B)が、一分子中に3個以上のアルケニル基を有するオルガノポリシロキサンである、請求項1~7のいずれか1項に記載の紫外線硬化性組成物。
- 硬化性組成物中の成分(B)中のアルケニル基が、炭素数3~8のアルケニル基である、請求項1~8のいずれか1項に記載の紫外線硬化性組成物。
- E型粘度計を用いて25℃で測定した組成物全体の粘度が5~60mPa・sの範囲である、請求項1~9のいずれか1項に記載の紫外線硬化性組成物。
- E型粘度計を用いて25℃で測定した組成物全体の粘度が5~30mPa・sの範囲である、請求項1~10のいずれか1項に記載の紫外線硬化性組成物。
- 請求項1~11のいずれか1項に記載の紫外線硬化性組成物を含む、絶縁性コーティング剤。
- 請求項1~11のいずれか1項に記載の紫外線硬化性組成物の硬化物。
- 請求項1~11のいずれか1項に記載の紫外線硬化性組成物の硬化物を絶縁性コーティング層として使用する方法。
- 請求項1~11のいずれか1項に記載の紫外線硬化性組成物の硬化物からなる層を含む表示装置。
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JPS48102188A (ja) * | 1972-03-03 | 1973-12-22 | ||
JPH0616941A (ja) * | 1992-06-29 | 1994-01-25 | Toray Dow Corning Silicone Co Ltd | 剥離性硬化皮膜形成用オルガノポリシロキサン組成物 |
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