WO2005081025A1 - 光導波路形成用光硬化性樹脂組成物、光導波路形成用光硬化性ドライフィルム及び光導波路 - Google Patents
光導波路形成用光硬化性樹脂組成物、光導波路形成用光硬化性ドライフィルム及び光導波路 Download PDFInfo
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/1221—Basic optical elements, e.g. light-guiding paths made from organic materials
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- 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
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/06—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes
-
- 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
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/06—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes
- C08F299/065—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes from polyurethanes with side or terminal unsaturations
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
- C08G18/673—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen containing two or more acrylate or alkylacrylate ester groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
Definitions
- Photocurable resin composition for forming optical waveguide Photocurable resin composition for forming optical waveguide, photocurable dry film for forming optical waveguide, and optical waveguide
- the present invention relates to a photocurable resin composition for forming an optical waveguide, a photocurable dry film for forming an optical waveguide, and an optical waveguide obtained by using the composition or the dry film.
- optical waveguides have been attracting attention as optical transmission media that can meet the demands for high-capacity and high-speed information processing in optical communication systems and computers.
- Quartz-based waveguides are typical of such optical waveguides, but there have been problems such as the necessity of a special manufacturing apparatus and a long manufacturing time.
- JP-A-2003-149475 discloses an ethylenically unsaturated group-containing carboxylic acid resin having at least one ethylenically unsaturated group and at least one carboxyl group in a molecule, a diluent, and a photopolymerization initiator.
- a resin composition for forming an optical waveguide containing an agent is disclosed.
- this composition has a problem that the process of producing the carboxylic acid resin containing an ethylenically unsaturated group is complicated. That is, in the production of this resin, an epoxy resin having at least two epoxy groups in the molecule, (meth) acrylic acid, and if necessary, one carboxylic acid and two hydroxyl groups in the molecule. After reacting a compound having the following formula, a complicated process of further reacting a polybasic acid anhydride is required. In addition, the introduction of unsaturated groups and carboxyl groups into the resulting resin may be insufficient.
- the resin composition for forming an optical waveguide has a disadvantage that the formed coating film is inferior in workability, mechanical properties, and the like. Therefore, it is difficult to use this composition as a dry film.
- An object of the present invention is to provide a photocurable resin composition and a photocurable dry film, which can form a coating film having excellent workability and mechanical properties and are extremely useful for forming an optical waveguide. To provide an optical waveguide obtained from the above.
- the present inventors have conducted intensive studies to achieve the above object. As a result, they have found that the above object can be achieved by a resin composition containing a specific carboxyl group-containing unsaturated polyurethane resin and a solvent.
- the present invention has been completed on the basis of such new findings.
- the present invention provides the following photocurable resin composition for forming an optical waveguide, a photocurable dry film for forming an optical waveguide, and an optical waveguide.
- a photocurable resin composition for forming an optical waveguide comprising a solvent.
- the hydroxyl group-containing unsaturated compound (c) is an unsaturated compound (c-4) having two or more hydroxyl groups and two or more unsaturated groups in one molecule, Photocurable resin composition
- a photocurable dry film for forming an optical waveguide which is formed from the photocurable resin composition for forming an optical waveguide according to item 1 above.
- An optical waveguide comprising a lower cladding layer (1), a core portion (II), and an upper cladding layer (III), wherein at least one of these components is the optical waveguide according to the above item 1.
- An optical waveguide comprising a lower cladding layer (1), a core portion (II) and an upper cladding layer (III), wherein at least one of these components is the optical waveguide according to the above item 10.
- the photocurable resin composition for forming an optical waveguide according to the present invention comprises a polyisocyanate conjugate (a), a carboxyl group-containing polyol (b), a hydroxyl group-containing unsaturated compound (c), and if necessary.
- a composition comprising a carboxyl group-containing unsaturated polyurethane resin (A) obtained by reacting a polyol (d) with a solvent (B).
- the polyisocyanate compound (a) includes a carboxyl group-containing polyol (b) for introducing a carboxyl group into the resin (A) and a hydroxyl group for introducing a photopolymerizable unsaturated group into the resin (A). It is used for binding the group-containing unsaturated compound (c).
- polyisocyanate conjugate examples include aliphatic diisocyanates, aromatic diisocyanates, alicyclic diisocyanates, and other polyisocyanates.
- aliphatic diisocyanate for example, hexamethylene diisocyanate, trimethylenediisocyanate, 1,4-tetramethylene diisocyanate, pentamethylene diisocyanate 1,2-propylene diisocyanate, 1,2-butylene diisocyanate, trimethylhexamethylene diisocyanate, dimer acid diisocyanate, lysine diisocyanate, 2,3-butylene diisocyanate And isocyanate and 1,3-butylene diisocyanate.
- alicyclic diisocyanate examples include, for example, isophorone diisocyanate, 4,4′-methylenebis (cyclohexyl isocyanate), methylcyclohexane 2,4-diisocyanate, methylcyclohexane 2, 6-diisocyanate, 1,3-di (isocyanatomethyl) cyclohexane, 1,4-di (isocyanatomethyl) cyclohexane, 1,4-cyclohexanediisocyanate, 1,3-cyclopentanediisocyanate And 1,2-cyclohexanediisocyanate.
- isophorone diisocyanate 4,4′-methylenebis (cyclohexyl isocyanate)
- methylcyclohexane 2,4-diisocyanate methylcyclohexane 2, 6-diisocyanate
- 1,3-di (isocyanatomethyl) cyclohexane
- aromatic diisocyanate examples include xylylene diisocyanate, metaxylylene diisocyanate, tetramethyl xylylene diisocyanate, tolylene diisocyanate, and 4,4'-diphenylmethane diisocyanate.
- polyisocyanates include, for example, triphenylmethane 4, ', A "-triisocyanate, 1,3,5-triisocyanatobenzene, 2,4,6-triisocyanate Sodium toluene, 4,4'-dimethyldiphenylmethane 2,2 ', 5,5'-polyisocyanate having three or more isocyanate groups such as tetraisocyanate; ethylene glycol, propylene glycol, 4 An adduct formed by reacting an excess amount of polyisocyanate with hydroxyl groups of polyols such as butylene glycol, polyalkylene glycol, trimethylol pan, and hexanetriol so that the amount of isocyanate groups becomes excessive; Tylene diisocyanate, isophorone diisocyanate, tolylene diisocyanate, xylylene diisocyanate, 4,4'-diphenyl Tanji iso Xia sulfonates, 4, 4
- the above polyisocyanate conjugates can be used alone or in combination of two or more.
- aromatic diisocyanates are difficult to undergo alkaline hydrolysis, so that a photocured layer having a large resistance to an alkaline developer can be formed. This is preferable because an optical waveguide can be formed. Aromatic diisocyanates are also preferable because they have a particularly high refractive index and can form a core portion.
- the carboxyl group-containing polyol (b) is capable of removing a non-irradiated portion of a coating film containing the resin with an alkali developer by introducing a carboxyl group into the resin (A). Can be imparted with water dispersibility.
- carboxyl group-containing polyol (b) a compound containing one or more carboxyl groups and two or more hydroxyl groups in one molecule can be used.
- 2,2-dimethylolpropionic acid, 2,2-dimethylolacetic acid, 2,2-dimethylolpentanoic acid, or a half-ester obtained by reacting a triol compound with an acid anhydride compound Sulfonate diol conjugates obtained by subjecting a compound, sodium dimethylsulfoisophthalate and glycols to a transesterification reaction under glycol-excess conditions, and the like.
- hydroxyl group-containing unsaturated compound (c) a compound containing an unsaturated group capable of forming a crosslinked structure by a radical polymerization reaction by light is used.
- unsaturated group known ones such as a (meth) atalyloyl group are preferable.
- Examples of the hydroxyl group-containing unsaturated compound (c) include an unsaturated compound having one hydroxyl group and one unsaturated group in one molecule (c-1), and one hydroxyl group in one molecule. And an unsaturated compound having two or more unsaturated groups (c-2), an unsaturated compound having two or more hydroxyl groups and one unsaturated group in one molecule (c-3), one molecule Two or more hydroxyl groups and two or more unsaturated groups And the like.
- Examples of the unsaturated compound (c1) having one hydroxyl group and one unsaturated group in one molecule include g.
- Examples of the unsaturated compound (c2) having one hydroxyl group and two or more unsaturated groups in one molecule include glycerin di (meth) acrylate, diglycerin tri (meth) acrylate, Trimethylolpropane di (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, and the like.
- the unsaturated compound (c 3) having two or more hydroxyl groups and one unsaturated group in one molecule for example, glycerin mono (meth) atalylate, diglycerin mono (meth) atalylate, Pentaerythritol mono (meth) atalylate, dipentaerythritol mono (meth) atalylate, dipentaerythritol mono (meth) atalylate, dipentaerythritol mono (meth) atalylate, sorbitol mono (meth) atalylate, etc. No.
- Examples of the unsaturated compound (c-4) having two or more hydroxyl groups and two or more unsaturated groups in one molecule include diglycerin di (meth) atalylate and pentaerythritol di (meth) atalylate , Dipentaerythritol di (meth) atalylate, dipentaerythritol tri (meth) atalylate, dipentaerythritol tetra (meth) atalylate, sorbitol di (meth) atalylate, sorbitol tri (meth) atalylate, sorbitol tetra ( Examples thereof include (meth) acrylate, sorbitol penta (meth) acrylate, and diglycidyl ether compound (meth) acrylic acid additive.
- Examples of the (meth) acrylic acid adduct of the diglycidyl ether conjugate include a (meth) acrylic acid adduct of bisphenol A
- polyol (d) a polyol compound other than the carboxyl group-containing polyol (b) is used.
- the polyol (d) is a compound having two or more hydroxyl groups in one molecule, and examples thereof include an aliphatic polyol, an aromatic polyol, an alicyclic polyol, and other polyols. These compounds may be used alone or in combination of two or more. Can be used together.
- Examples of the aliphatic polyol include (poly) methylene glycol, (poly) ethylene glycol, (poly) propylene glycol, 1,4-butanediol, 1,3-butanediol, 2,3 butanediole, 2-butanediole, 3-methyl-1,2-butanediole, 1,2 pentanediol, 1,5 pentanediol, 1,4 pentanediol, 2,4-pentanediol, 2,3-dimethyltrimethylene glycol, 3-methyl-4 , 3 pentanediol, 3-methyl-4,5 pentanediol, 2,2,4 trimethyl-1,3 pentanediol, 1,6-hexanediol, 1,5-hexanediol, 1,4-hexanediol, 2,5-hexanediol, 1,4-cyclohexanedimethanol
- Examples of the alicyclic polyol include 1,4-cyclohexanedimethanol, tricyclodecanedimethanol, hydrogenated bisphenol A, hydrogenated bisphenol F, hydrogenated bisphenol, and hydrogenated bisphenol A.
- An alkylene oxide adduct, a hydrogenated bisphenol B alkylene oxide adduct, a hydrogenated bisphenol F alkylene oxide adduct and the like can be mentioned.
- aromatic polyol examples include bisphenol A, bisphenol F, bisphenol B, a product of bisphenol A with an alkylene oxide, an alkylene oxide adduct of bisphenol B, and an alkylene of bisphenol F. Oxide adducts and the like can be mentioned.
- alkylene oxide examples include methylene oxide, ethylene oxide, propylene oxide, and butylene oxide.
- polystyrene resin examples include, for example, polycarbonate diol, polyester diol, polycaprolactatone diol, OH-type terminal ether type vinyl ether oligomer and the like.
- the carboxyl group-containing unsaturated polyurethane resin (A) used in the composition of the present invention is generally Can be produced by a known method similar to that for the polyurethane resin.
- the carboxyl group-containing polyol (b) and the polyisocyanate conjugate (a) are blended so that the isocyanate group becomes excessive, and the isocyanate group and the hydroxyl group are added and reacted.
- a carboxyl group-containing isocyanate conjugate is produced.
- the molar ratio of isocyanate groups to Z hydroxyl groups in this reaction is usually about 2.0-1.1, preferably about 2.0-1.2.
- the hydroxyl group-containing unsaturated compound (c) is usually added to the carboxyl group-containing isocyanate conjugate in a molar ratio of isocyanate group Z hydroxyl group of about 0.8-1.0, preferably about 0.9-1.
- the carboxyl group-containing unsaturated polyurethane resin (A) can be obtained by carrying out an addition reaction of the components blended so as to have a viscosity of 0.0. Before reacting the hydroxyl group-containing unsaturated compound (c), the carboxyl group of the carboxyl group-containing isocyanate conjugate is preliminarily blocked by esterification with a lower alcohol, and after the reaction, the lower alcohol is heated. It can be removed to regenerate the carboxyl group.
- the lower alcohol include methanol, ethanol, propanol and the like.
- the polyol (d) When the polyol (d) is used, first, the polyol (d), the carboxyl group-containing polyol (b) and the polyisocyanate conjugate (a) become excessive in the isocyanate group. Then, an isocyanate group and a hydroxyl group are subjected to an addition reaction to produce a carboxyl group-containing isocyanate compound.
- the mono-ktt of the isocyanate group Z hydroxyl group in this reaction is usually about 2.0-1.1, preferably about 2.0-1.2.
- the hydroxyl group-containing unsaturated compound (c) is usually added with a molar ratio of isocyanate group Z hydroxyl group of about 0.8 to 1.0, preferably about
- the carboxyl group-containing unsaturated polyurethane resin (A) can be obtained by carrying out an addition reaction of the components blended so as to be 0.9-1.0.
- the carboxyl group of the carboxyl group-containing isocyanate conjugate is preliminarily esterified with a lower alcohol and blocked, and after the reaction, the lower alcohol is heated. To regenerate the carboxyl group.
- the lower alcohol include methanol, ethanol, and propanol.
- a carboxyl group-containing polyol (b), a hydroxyl group-containing unsaturated compound (c), and a If necessary, after mixing the polyol (d), the polyisocyanate conjugate (a) may be reacted to obtain the carboxyl group-containing unsaturated polyurethane resin (A).
- the temperature of the reaction system is preferably 100 ° C or lower to prevent polymerization of the radically polymerizable unsaturated group which is usually 50 to 150 ° C.
- the reaction can be promoted by using a urethanation reaction catalyst.
- organotin compounds such as tin octylate and dibutyltin dilaurate are preferred.
- an organic solvent can be used as necessary.
- these organic solvents include acetone, methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, butyl acetate, toluene, xylene, N, N-dimethylformamide, N-methyl-2-pyrrolidone, and the like.
- the photocurable resin composition for forming an optical waveguide of the present invention contains a carboxyl group-containing unsaturated polyurethane resin (A). It is a composition in which the groups polymerize, crosslink and cure.
- A carboxyl group-containing unsaturated polyurethane resin
- the groups polymerize, crosslink and cure.
- an active energy ray such as an electron beam, ultraviolet light, or visible light can be used.
- a photoradical polymerization initiator and, if necessary, a photosensitizer can be blended.
- aromatic carbohydrate conjugates such as benzophenone, benzoin methyl ether, benzoin isopropyl ether, benzyl xanthone, thioxanthone and anthraquinone; acetophenone, propiophenone, ⁇ -hydroxyisobutylphenone, ⁇ , ⁇ , dichloro4 — Acetophenones such as phenoxyacetophenone, 1-hydroxy-1-cyclohexylacetophenone, diacetinoleacetophenone, and acetophenone; benzoyl peroxide, t-butyl peroxy 2-ethyl hexanoate, t-butylhydroxide, Organic peroxides such as tert-butyldiperoxyisophthalate, 3,3 ', 4,4'-tetra (t-butylperoxycarbol) benzophenone; diphen
- photoradical polymerization initiators can be used alone or in combination of two or more.
- radical photopolymerization initiators di-tert-butyl diperoxyisophthalate, 3,3 ', 4,4-tetra (t-butylperoxycarbol) benzophenone, iron allene complex and Titanocene compounds are preferred because of their high activity against crosslinking or polymerization.
- the photoradical polymerization initiator a commercially available product can be used.
- Commercially available products include, for example, “Irgacure 651” (trade name, acetofphenone-based photoradical polymerization initiator, manufactured by Ciba-Sharity Chemicals), “Irgacure 184” (trade name, acetofenone, a product of Ciba-Sharity Chemicals) "IRGACURE 1850" (Cibas Charity Chemicals, trade name, acetphenone photoradical polymerization initiator), "IRGACURE 907" (Cibas Charity Chemicals, trade name) , Aminoalkylphenone-based photoradical polymerization initiator), "IRGACURE 369” (manufactured by Ciba-Sharity Chemicals, trade name, aminoalkylphenone-based photoradical polymerization initiator), "lucirin TPO” (manufactured by BASF, Trade name, 2,4,6-trione
- the mixing ratio is usually 0 to 100 parts by weight of the carboxyl group-containing unsaturated polyurethane resin (A). It is preferred to be in the range of about 5-10 parts by weight.
- the photosensitizing dye include thioxanthene, xanthene, ketone, thiopyrylium salt, basestyryl, merocyanine, 3-substituted coumarin, 3,4-substituted tamarin, and cyanine.
- borate dyes include those described in JP-A-5-241338, JP-A-7-5685, JP-A-7-225474, and the like.
- a polyepoxide in the photocurable resin composition of the present invention, can be blended if necessary.
- the polyepoxides include bisphenol-type epoxy resins obtained by reacting bisphenols with haloepoxides such as epichlorohydrin, -methylepichlorohydrin, etc .; A haloepoxide is reacted with a phosphorus-modified bisphenol-type epoxy resin reacted with a phosphorus compound; an alicyclic epoxy resin obtained by hydrogenating a bisphenol-type epoxy resin; phenol novolak resin, and cresol novolak resin.
- haloepoxides such as epichlorohydrin, -methylepichlorohydrin, etc .
- Novolak epoxy resin obtained by the reaction Novolak epoxy resin obtained by the reaction; glycidyl ester type epoxy resin obtained by reacting polybasic acids such as phthalic acid and dimer acid with epichlorohydrin; polyamines such as diaminodiphenylmethane and isocyanuric acid Obtained by the reaction of chlorophylls with epichlorohydrin Silylamine type epoxy resin; linear aliphatic epoxy resin and alicyclic epoxy resin obtained by acidifying the olefin bond in polyolefin with peracid such as peracetic acid; biphenols and epichlorohydrin Biphenyl type epoxy resin obtained by reacting phosphorus is exemplified.
- the above polyepoxides it is preferable to combine a bisphenol-type epoxy resin, a novolak-type epoxy resin, or a modified resin thereof, which greatly improves the heat resistance required for the optical waveguide.
- the photocurable resin composition of the present invention may contain, if necessary, an ethylenically unsaturated compound; an adhesion promoter; nodroquinone, 2,6-di-tert-butyl-p-cresol, N, N- Polymerization inhibitors such as diphenyl p-phenylenediamine; saturated resins; unsaturated resins; vinyl polymers; Organic resin fine particles such as unsaturated group-containing vinyl polymers; various pigments such as coloring pigments and extenders; metal oxides such as cobalt oxide; dibutyl phthalate, dioctyl phthalate, tricresyl phosphate, polyethylene glycol; It may contain a plasticizer such as polypropylene glycol; a repelling inhibitor;
- the ethylenically unsaturated compound is, for example, a compound having one or more, preferably 114 radically polymerizable ethylene groups, and which undergoes addition polymerization at the time of exposure to reduce the insolubility of exposed portions. Resulting polymerizable monomers and oligomers thereof.
- the conjugated product include acrylic acid, methacrylic acid, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, and poly (416).
- These ethylenically unsaturated compounds can be used alone or in combination of two or more.
- the amount of the ethylenically unsaturated compound to be used is usually preferably about 200 parts by weight or less, more preferably about 3 to 50 parts by weight, based on 100 parts by weight of the carboxyl group-containing unsaturated polyurethane resin (A). preferable.
- the saturated resin can be used to suppress the solubility of the film of the photocurable resin composition.
- the saturated resin include polyester resin, alkyd resin, (meth) acrylic resin, vinyl resin, epoxy resin, phenol resin, natural resin, synthetic rubber, silicone resin, and fluorine resin. , Polyurethane resins and the like. These resins can be used alone or in combination of two or more.
- unsaturated resin those having an average of about 110, particularly about 114 unsaturated groups per molecule in the above-mentioned saturated resin are preferable.
- the amount of the saturated resin and the amount of the Z or unsaturated resin used is determined based on the amount of the unsaturated polyurethane containing a carboxyl group. Usually, about 200 parts by weight or less per 100 parts by weight of the tanning resin (A) is preferable, and about 3 to 50 parts by weight is more preferable.
- the photocurable resin composition of the present invention if necessary, for example, a filler, a coloring agent, a leveling agent, a heat stabilizer, a discoloration inhibitor, an antioxidant , Release agents, surface treatment agents, flame retardants, viscosity modifiers, plasticizers, antibacterial agents, fungicides, defoamers, coupling agents, etc.
- the photocurable resin composition for forming an optical waveguide of the present invention is an organic solvent type liquid resin composition comprising a carboxyl group-containing unsaturated polyurethane resin (A) and a solvent (B) as essential components. Or an aqueous liquid resin composition.
- the solvent (B) an organic solvent and Z or water can be used.
- the solvent (B) used at the time of producing the resin (A) can be used as it is. Moreover, you may mix
- the organic solvent for example, ketones, esters, ethers, cellosolves, aromatic hydrocarbons, alcohols, halogenated hydrocarbons and the like can be used.
- the amount of the solvent (B) to be used is preferably in the range of usually about 30 to 2,000 parts by weight per 100 parts by weight of the unsaturated carboxyl group-containing polyurethane resin (A).
- the organic solvent type liquid resin composition is a carboxyl group-containing unsaturated polyurethane resin.
- It can be prepared by dissolving or dispersing (A) and optional components in an organic solvent.
- organic solvent the same solvents as those used for the solvent (B) can be used.
- the aqueous liquid resin composition can be prepared by dissolving or dispersing the carboxyl group-containing unsaturated polyurethane resin (A) and optional components in water or a mixture of water and an organic solvent. it can.
- the carboxyl group-containing unsaturated polyurethane resin (A) is water-soluble or dispersed in water by neutralizing the carboxyl groups in the resin (A) with an alkali neutralizer.
- alkali neutralizer examples include monoethanolamine, diethanolamine, triethylamine, getylamine, dimethylaminoethanol, cyclohexylamine, and ammonia.
- the neutralization is generally performed in an amount of 0.2 to 1.0 equivalent, particularly preferably 0.3 to 0.8 equivalent, per equivalent of the carboxyl group.
- the organic solvent type liquid resin composition or the aqueous liquid resin composition, which is the photocurable resin composition of the present invention, is obtained by forming a roller, a roll coater, a spin coater, and a knife on a substrate forming an optical waveguide.
- the coating for an optical waveguide can be obtained by applying by means of an edge coater, a curtain roll coater, spraying, electrostatic coating, dip coating, silk printing or the like, and drying.
- Examples of the base material include a silicon substrate, a quartz substrate, a polyimide substrate, a PET substrate, a liquid polymer substrate, a copper foil, a copper-clad laminate, and a circuit-formed substrate.
- the photocurable dry film for forming an optical waveguide of the present invention is formed from the photocurable resin composition of the present invention.
- This dry film is preferable in terms of environmental protection, safety, workability, and the like.
- the photocurable dry film of the present invention is obtained, for example, by coating the above-mentioned organic solvent type liquid resin composition or aqueous resin composition which is the composition of the present invention on a base film by a roller, a roll coater, or a spinner. It can be made by applying by means of a coater, knife edge coater, curtain rono coater, spray, electrostatic coating, dip coating, silk printing, etc. and drying it.
- the dry film thickness of the dry film layer is preferably about 1 ⁇ m to 2 mm, more preferably about 1 m to 1 mm.
- a force bar coat layer can be provided on the dry film layer as needed.
- the cover coat layer may be formed by painting on a dry film layer, or may be attached on a dry film.
- a base film for preparing a dry film for example, a film such as polyethylene terephthalate, aramide, kapton, polymethylpentene, polyethylene, or polypropylene can be used.
- a polyethylene terephthalate film is optimal in terms of cost and good properties as a dry film.
- the thickness of the base film is preferably about 1 ⁇ m to 10 mm, more preferably about 10 ⁇ m to 1 mm.
- the obtained dry film can be attached to a base material to form a clad layer, a core layer, and the like for forming an optical waveguide. Two or more layers can be laminated and pasted. When attaching, the base film may or may not be peeled. Further, the attached core layer is exposed and cured with ultraviolet light, visible light, or the like so that a core pattern is formed. If there is a film layer, the core layer pattern can be formed by peeling off the film layer and developing the film layer.
- the softening temperature of the dry film formed by the curable resin composition for forming an optical waveguide of the present invention is preferably about 0 ° C. to 300 ° C., and about 10 ° C. to 250 ° C. Is more preferable.
- the soft film temperature of the dry film is lower than the above range, the heating at the time of sticking the dry film to the base material causes the dry film to soften and produce stickiness, so that the sticking operation becomes extremely difficult, Bubbles may occur after application. On the other hand, if it exceeds the above range, it becomes difficult to attach the dry film.
- the softening temperature is a value measured by a thermal deformation behavior of a lmm-thick resin sheet using a thermomechanical analyzer. That is, a quartz needle was placed on the sheet, a load of 49 g was applied, and the temperature was raised at 5 ° C./min. The temperature at which the needle penetrated 0.635 mm was defined as the softening temperature.
- a thermomechanical analyzer for example, a device commercially available from DuPont can be used.
- Examples of the light source used for photocuring include an ultra-high pressure mercury lamp, a high pressure mercury lamp, a medium pressure mercury lamp, a low pressure mercury lamp, a chemical lamp, a carbon arc lamp, a xenon lamp, a metal nitride lamp, and a tungsten lamp. No. Further, various lasers having an oscillating line in an ultraviolet region or a visible light region can also be used.
- Examples of the laser include an argon laser (oscillation line 355 nm), a YAG-THG laser (oscillation line 355 nm), a semiconductor (InGaN) laser (oscillation line 405 nm), an argon laser (oscillation line 488 nm), and a YAG-SHG Laser 1 (oscillation line 532 nm) is preferred.
- the optical waveguide of the present invention is an optical waveguide composed of a lower cladding layer (1), a core portion (II) and an upper cladding layer (III), and at least one of these components is the optical waveguide of the present invention. It is formed of a photocurable resin composition for forming or a photocurable dry film for forming an optical waveguide.
- all of the lower cladding layer (I), the core portion (II) and the upper cladding layer (III) are formed of the photocurable resin composition for forming an optical waveguide of the present invention.
- it can be formed entirely of the curable dry film for forming an optical waveguide of the present invention.
- the resin composition of the present invention and a dry film are combined, and if necessary, a known composition for forming an optical waveguide and a dry film are partially combined to form a lower cladding layer (1) and a core (II). It is also possible to form the upper cladding layer (III).
- the curable resin composition for forming an optical waveguide or the curable dry film for forming an optical waveguide of the present invention is used for the core part (II).
- V preferably formed.
- the relative refractive index difference between the higher refractive index layers of the lower cladding layer (I) and the upper cladding layer (III) and the core part (II) is 0.1% or more. Is preferred.
- the relative refractive index difference is defined by the following equation (1).
- Relative refractive index difference (%) [(n-n) / n] X 100 (1)
- n is the refractive index of the core part (II), and n is the lower cladding layer (I) and the upper cladding layer (III
- refractive index of the higher refractive index layer Is the refractive index of the higher refractive index layer. These refractive indices are values measured with an Abbe refractometer at a wavelength of 850 nm.
- the refractive index of the core portion (II) needs to be larger than the refractive index of the lower clad layer and the upper clad layer.
- the refractive index of the core portion (II) is usually set to a value within the range of 1.420-1.650 for light having a wavelength of 400-1700 nm, It is preferable that the refractive index of the lower cladding layer (I) and that of the upper cladding layer (III) are each in the range of 1.400-1.648.
- the refractive index can be adjusted by appropriately selecting the type of the resin used, the additives, and the amounts of these additives.
- the thicknesses of the lower cladding layer (I), the upper cladding layer (III), and the core portion ( ⁇ ) are not particularly limited. Normally, the thickness of the lower cladding layer (I) is about 1 to 200 ⁇ m, the thickness of the core (II) is about 1 to 200 ⁇ m, and the thickness of the upper cladding layer (III) is about 1 to 200 m. Is preferably within the range. Further, the core portion (II) generally has a rectangular cross-sectional shape, and its width is not particularly limited. Usually, it is preferable that the width of the core part (II) is in the range of about 11 to 200 m.
- the optical waveguide of the present invention can be manufactured by forming a lower cladding layer (1), a core part (II) and an upper cladding layer (III) on a base material in this order.
- the production of the optical waveguide of the present invention can be performed according to a process known per se. In this manufacturing process, at least one of the constituent elements of the lower clad layer (I), the core part (II) and the upper clad layer (III) is provided with the photocurable resin composition for forming an optical waveguide of the present invention or the photoconductive resin.
- the optical waveguide of the present invention can be manufactured by forming it with a photocurable dry film for forming a waveguide. Hereinafter, a method of manufacturing the optical waveguide will be described.
- the lower cladding layer (I) can be formed of the photocurable resin composition for forming an optical waveguide or the photocurable dry film for forming an optical waveguide of the present invention.
- it can be formed by a known composition or a dry film containing a resin such as a thermoplastic resin or a curable resin.
- thermoplastic resin examples include acrylic resin, epoxy resin, silicone resin, polycarbonate resin, siloxane resin, polyimide resin, polyurethane resin, and oxetane resin.
- Fat polyether sulfone resin, polyphenol sulfide resin, polyether imide resin, polysulfone resin, polyether ketone resin, polyamide amide S, polyethylene amide S, polypropylene System S, polyethylene terephthalate resin, phenol novolak resin, ethylene vinyl alcohol copolymer, ethylene butyl acetate copolymer, polystyrene resin, fluorine resin, polybutylene terephthalate resin, Polyacetal resin, Polyether nitrile resin, Polyamide resin, Polyamide 11, Polyolefin Maleimide copolymers, aramide resins, liquid crystal polymers, polyetherketone resins, cyanate resins, and the like.
- a polyacetal copolymer can be used as the liquid crystal polymer.
- Examples of the curable resin include a thermosetting resin, a room temperature curable resin, and an active energy ray-curable resin.
- thermosetting resin for example, a base resin having a thermoreactive functional group and a curing agent having a functional group that reacts with the functional group can be used in combination. Further, a self-crosslinking resin having a ⁇ -methylol group, an ⁇ alkoxymethylol group, or the like can be used.
- a heat-reactive functional group and a functional group that reacts with the functional group include a carboxyl group and an epoxy group (an oxysilane group), a carboxylic anhydride and an epoxy group (an oxysilane group), and an amino group and an epoxy group. (Oxysilane group), carboxyl group and hydroxyl group, carboxylic anhydride and hydroxyl group, blocked isocyanate group and hydroxyl group, isocyanate group and amino group, and the like.
- room-temperature curable resin examples include an oxidatively curable unsaturated resin and an isocyanate-curable resin.
- an active energy ray-curable resin one containing two or more ring-opening-polymerizable functional group-containing compounds in a molecule as an essential component, and optionally using an active energy ray polymerization initiator together; It is preferable to use, for example, a compound which uses an active energy ray polymerization initiator in combination with the unsaturated unsaturated compound, the unsaturated resin or the like, if necessary. Further, as the active energy ray-curable resin, the same ones as used in a negative active energy ray-curable resin composition described later can be used. When the active energy ray-curable resin composition is cured, the entire surface of the film is irradiated.
- thermoplastic resin or the curable resin is dissolved or dispersed in a solvent such as an organic solvent or water, if necessary, together with a curing agent or the like, to form a thermoplastic resin composition or a thermosetting resin.
- a solvent such as an organic solvent or water, if necessary, together with a curing agent or the like, to form a thermoplastic resin composition or a thermosetting resin.
- a sex resin composition is prepared. Further, a liquid polymerizable monomer or the like can be used as the solvent.
- the photocurable resin composition of the present invention or a known thermoplastic resin composition or curable resin composition is applied onto a substrate for an optical waveguide by using a roller, a roll coater, or a spin coater. , Knife edge coater, curtain roll coater, spray, electrostatic coating, dip coating
- the lower clad layer (I) can be formed by applying and drying by means such as silk printing or the like. Further, if necessary, the coating film can be cured or dried by irradiation with active energy rays, heating, or the like.
- thermoplastic resin composition or curable resin composition is coated on a base film by a roller-Rono recorder-spin coater, a knife edge coater, a curtain Rhono recorder, spray, electrostatic coating.
- a dry film layer can be formed on the surface of the base film by applying the film by means of, for example, dip coating or silk printing and drying. Next, the base film is peeled off, and the dry film is heated and Z or pressed on the substrate.
- the lower clad layer (I) can be formed by sticking.
- a laminated film having a dry film layer formed on the surface of the base film is adhered to the substrate by heating and Z or pressure bonding, then the base film is peeled off, and the lower clad layer (I) is formed on the surface of the substrate. It can also be formed.
- the photocurable dry film of the present invention as the dry film, the lower clad layer (I) can be similarly formed.
- the coating film is cured or dried by irradiation with active energy rays, heating, or the like, if necessary, to form a lower clad layer (I). Can be formed.
- the lower cladding layer (I) As a method for forming the lower cladding layer (I), it is particularly preferable to form the lower cladding layer (I) using a dry film from the viewpoints of environmental conservation, safety, workability, and the like.
- the core (II) is formed on a part of the surface of the lower cladding layer (I).
- the core part ( ⁇ ) can be formed using the photocurable resin composition for forming an optical waveguide or the photocurable dry film for forming an optical waveguide of the present invention.
- the core (II) can be formed using a known resin composition or a dry film.
- thermoplastic resin compositions examples include thermoplastic resin compositions; thermosetting resin compositions, negative active energy ray-sensitive resin compositions, and positive active energy ray-sensitive resin compositions. Can be mentioned. Of these, it is preferable to use a negative active energy ray-sensitive resin composition and a positive active energy ray-sensitive resin composition.
- thermoplastic resin composition examples include those similar to those forming the clad layer.
- the negative active energy ray-sensitive resin composition or the positive active energy-sensitive linear resin composition is or as a dry film.
- the negative active energy ray-sensitive resin composition becomes insoluble in a developing solution when a film formed from the composition is cured by being irradiated with energy rays such as ultraviolet rays, visible rays, and heat rays.
- energy rays such as ultraviolet rays, visible rays, and heat rays.
- a core portion can be formed, and a known material can be used without any particular limitation.
- a compound containing a functional group capable of ring-opening and polymerizing at least two in the molecule is an essential component, and active energy ray polymerization is performed as necessary.
- Aqueous or organic solvent type composition containing an initiator; an aqueous or organic solvent type composition containing a polymerizable unsaturated compound, unsaturated resin, etc. and, if necessary, an active energy ray polymerization initiator can be used.
- the positive active energy ray-sensitive resin composition a film formed by the composition is exposed to energy rays such as ultraviolet rays, visible rays, and heat rays, and is decomposed to dissolve in a developing solution.
- energy rays such as ultraviolet rays, visible rays, and heat rays
- Any known aqueous or organic solvent-type composition capable of forming a core by changing its properties can be used without particular limitation.
- a positive-type energy-sensitive linear resin composition for example, a resin obtained by bonding quinonediazidesulfonic acids to a base resin such as an atalyl resin having an ion-forming group through a sulfonic acid ester bond is used as a main component.
- a base resin such as an atalyl resin having an ion-forming group through a sulfonic acid ester bond.
- This composition is a naphthoquinonediazide photosensitive composition utilizing a reaction in which a quinonediazide group is photolyzed by irradiation light to form indenecarboxylic acid via ketene.
- a positive-type energy-sensitive radiation-sensitive resin composition for example, a photoacid generator that forms an insoluble crosslinked film in an alkaline developer and an acidic developer by heating and then generates an acid group by light irradiation
- Positive photosensitive compositions utilizing a mechanism in which a crosslinked structure is cut by an agent so that an irradiated portion becomes soluble in an alkaline developer or an acidic developer.
- the photoacid generator is a compound that generates an acid upon exposure, decomposes the resin by using the generated acid as a catalyst, and known compounds can be used.
- thermosensitive resin composition known compositions, for example, a composition containing a thermosensitive resin, an olefinic unsaturated compound containing an ether bond, and a thermal acid generator can be used.
- Examples of powerful compositions include those described in JP-A No. 12-187326.
- a core part ( ⁇ ⁇ ) is formed using the resin composition of the present invention or the above-mentioned known resin composition.
- a resin composition for forming a core portion is applied to a surface of a lower clad layer (I) by a roller.
- a coating film is formed by applying the composition by means of a rhono recorder, a spin coater, a knife edge coater, a curtain rono recorder, spraying, electrostatic coating, dip coating, silk printing and the like, followed by drying.
- the coating is irradiated with active energy rays so as to form a core pattern, and then, when the resin composition of the present invention or the negative active energy-sensitive linear resin composition is used, On the other hand, when a positive active energy-sensitive linear resin composition is used for the irradiated part, the core part ( ⁇ ) can be formed by removing the irradiated part by development.
- a known resin composition in the form of a dry film from the viewpoints of environmental conservation, safety, workability, and the like.
- the composition is applied on a base film by means such as mouth color, rhono recorder, spin coater, knife edge coater, curtain rhono recorder, spray, electrostatic coating, dip coating, silk printing and the like.
- a dry film layer is formed on the surface of the base film.
- the base film is peeled off, and a dry film is attached on the lower clad layer (I) by heating and Z or pressure bonding to form a composition film.
- a laminated film having a dry film layer formed on the base film surface is adhered onto the lower clad layer (I) by heating and Z or pressure bonding, and then the base film is peeled off, and the base film is peeled off.
- a composition film can be formed.
- the photocurable dry film of the present invention as the dry film, the resin composition coating of the present invention can be similarly formed.
- the core part (II) can be formed by removing the irradiated part by development when a positive active energy ray resin composition is used. it can.
- thermosetting resin composition When a thermosetting resin composition is used for forming the core ( ⁇ ), the composition is applied to the surface of the lower cladding layer (I) by using a roller, a rho-no coater, a spin coater, a knife edge. Coater 1, curtain roll coater, spray, electrostatic coating, dip coating, silk printing, etc., apply and dry to form a composition film. At this time, for example, after the thermosetting resin composition is applied, the core pattern is formed by molding using a mold. The formed core portion ( ⁇ ) can be formed.
- the upper cladding layer (III) can be formed of the photocurable resin composition for forming an optical waveguide or the photocurable dry film for forming an optical waveguide of the present invention.
- the upper cladding layer (III) can be formed by a known composition or a dry film containing a resin such as a thermoplastic resin or a curable resin.
- Examples of the above-mentioned known resin composition and dry film include the same ones as described in the lower cladding layer (I).
- the upper cladding layer (III) can be formed by a method similar to the method of forming the lower cladding layer (I).
- the photocurable resin composition of the present invention or a known thermoplastic resin composition or curable resin composition is coated on the surface of the lower cladding layer (I) and the core portion (II). Coating by roller, roll coater, spin coater, knife edge coater, curtain rono coater, spray, electrostatic coating, dip coating, silk printing, etc., and drying to form upper cladding layer (III) can do.
- the coating film can be cured or dried by irradiation with active energy rays, heating, or the like.
- thermoplastic resin composition or curable resin composition is coated on a base film by a roller-roller coater-spin coater, knife edge coater, curtain roll coater, spray, electrostatic coating. Then, a dry film layer is formed on the surface of the base film by coating by means of, for example, dip coating or silk printing and drying. Next, the base film is peeled off, and the dry film is adhered to the surfaces of the lower clad layer (I) and the core part (II) by heating and pressure or pressure bonding to form an upper clad layer (in). In addition, a laminated film having a dry film layer formed on the surface of the base film is combined with the lower clad layer (I) and the core (
- the upper clad layer ( ⁇ ) can also be formed by applying the film to the surface of II) by heating and ⁇ or pressure bonding, and then peeling off the base film.
- the photocurable dry film of the present invention as the dry film, the upper clad layer (III) can be similarly formed.
- the upper clad layer (III) has a softening temperature in the case of using a thermosetting resin composition as a dry film before being attached to the surfaces of the lower clad layer (I) and the core part (II).
- o ° c is preferably about 300 ° C, more preferably about 10 ° C to about 250 ° C.
- the softening temperature is preferably about 0 ° C to 300 ° C, more preferably about 10 ° C to 250 ° C.
- the soft film temperature of the dry film forming the upper clad layer (III) is preferably lower than the soft film temperature of the core portion (II), and more preferably 10 ° C or more.
- the softening temperature of the core (II) is determined by the resin composition forming the core.
- the resin composition constituting the layer by irradiation with active energy rays, heating, etc., in order to improve the durability, heat resistance, workability, and light transmission characteristics. Preferred from the point.
- the surfaces of the core portion (II) and the lower cladding layer (I) are overlapped with the dry film on the base film so as to face each other.
- a pressing method such as a normal pressure hot roll pressing method, a vacuum hot roll pressing method, and a vacuum hot press pressing method.
- the core film (II) and the lower film are transferred to the core film (II) and the lower clad layer (I) by adding the base film to the base film surface and, if necessary, peeling the base film from the dry film. It is preferable to form an upper clad layer on the surface of the clad layer (I).
- the optical waveguide In the production of the optical waveguide, visible light, ultraviolet light, infrared light, X-ray, ⁇ -ray, j8-ray, ⁇ -ray and the like can be used as active energy rays.
- the irradiation device for example, a high-pressure mercury lamp, a low-pressure mercury lamp, a metal halide lamp, an excimer lamp, or the like is preferably used.
- the irradiation dose is not particularly limited. In general, it is preferable to irradiate radiation having a wavelength of 200 to 440 nm and an illuminance of 11 to 500 mWZcm 2 so that the irradiation amount becomes 10 to 5 and OOOmjZcm 2 , for exposure.
- an active energy ray-curable and thermosetting composition can also be used as the curable resin composition or its dry film.
- a composition can be obtained, for example, by mixing an active energy ray-curable resin composition and a thermosetting resin composition.
- an active energy ray-curable and thermosetting resin composition is used, for example, after the lower clad layer (I) is light-cured, the lower clad layer (I) is further hardened by heating to form a stronger lower clad layer. Can be formed. Further, in the same manner, the hardened core portion and the upper clad layer can be formed in the core portion (II) and the upper clad layer (III).
- heat curing may be performed for each formation, and the lower cladding layer (I) Heat curing may be performed after the formation of the core portion (II) and after the formation of the upper cladding layer (III). After the formation of the lower cladding layer (I), the core portion (II) and the upper cladding layer (III), heat curing may be performed simultaneously.
- the carboxyl group-containing unsaturated polyurethane resin (A) contained in the photocurable resin composition for forming an optical waveguide of the present invention comprises a polyisocyanate conjugate (a), It can be produced by a simple process by reacting the group-containing polyol (b), the hydroxyl group-containing unsaturated compound (c), and, if necessary, the polyol (d). Further, since the reactivity between the isocyanate group and the hydroxyl group is high, the unsaturated group and the carboxyl group can be surely introduced into the resin.
- the photocurable resin composition for forming an optical waveguide of the present invention is excellent in workability, mechanical properties, and the like of a formed coating film, and therefore is optimal for use as a dry film. is there.
- the refractive index of the composition of the present invention can be increased. Wear. Therefore, the photocurable resin composition or the photocurable dry film of the present invention has the advantages that the refractive index is high and the core portion can be formed.
- At least one of the lower cladding layer (I), the core portion (II) and the upper cladding layer (III) is provided with the photocurable resin composition or the photocurable resin of the present invention. Formed with a functional dry film By doing so, it is excellent in durability, heat resistance, workability, optical transmission characteristics, and the like.
- the optical waveguide of the present invention is used for coupling an optical device such as an optical integrated circuit, an optical modulator, an optical switch, an optical connector, an optical branching coupling, a thin film device, and an optical fiber. It can be preferably used as an optical waveguide to be used.
- Relative refractive index difference The refractive index of the resin composition formed with the higher refractive index layer and the core portion of the lower cladding layer and the upper cladding layer, or the refractive index of the film sample obtained also from the dry film force, was obtained from Atago.
- An interference filter with a wavelength of 850 nm was set in the multi-wavelength Abbe refractometer “DR-M4”, and the measurement was performed at 23 ° C. Using the respective refractive index values, the relative refractive index difference (%) was calculated by the above equation (1).
- Transmission loss A light having a wavelength of 850 nm was also incident on the optical waveguide at one end, and the amount of light emitted from the other end was measured. A indicates that the loss is less than 0.4 dBZcm and the transmission characteristics are good, and B indicates that the loss is more than 0.4 dBZcm and the transmission characteristics are inferior.
- Crevice of core portion A is a case where there is no gap between the convex portion which is the core portion and the upper cladding layer, and B is a case where a gap is generated and an organic solvent type composition is used. This indicates that the heat generated and bubbles were generated.
- A indicates that the core is not deformed by the upper cladding layer
- B indicates that the core is deformed by the upper cladding layer
- Core coverage is a film in which the upper cladding layer covers the projections of the core with a sufficient thickness, and B is a film in which the upper cladding layer covers the projections of the core.
- C indicates a slightly thinner one, and C indicates a thinner one in which the upper cladding layer is covered by the convex part of the core.
- A is one in which the formation of the optical waveguide is easy and easy throughout
- B is one in which the formation of the optical waveguide is slightly complicated throughout
- C is the one in which the formation of the optical waveguide is complicated throughout
- a carboxyl-containing unsaturated polyurethane resin obtained by adding 2 mol of trimethylolpropane diatalylate to a reaction product of 1 mol of dimethylolbutanoic acid and 2 mol of tolylene diisocyanate, a polymerization initiator (aminoalkyl
- a photocurable resin composition (1) of the present invention was obtained by mixing 3 g of a phenone-based photoradical polymerization initiator, trade name "IRGACURE 907", manufactured by Ciba Specialty Chemicals) and 40 Og of ethyl acetate.
- a carboxyl group-containing unsaturated polyurethane resin obtained by adding 2 mol of trimethylolpropane diatalylate to a reaction product of 1 mol of dimethylolbutanoic acid and 2 mol of hexamethylene diisocyanate, a polymerization initiator ( 3 g of an aminoalkylphenone-based photoradical polymerization initiator, trade name “IRGACURE 907” manufactured by Ciba Specialty Chemicals) and 400 g of ethyl acetate are mixed, and the photocurable resin composition (2) of the present invention is mixed. ).
- a polymerization initiator 3 g of an aminoalkylphenone-based photoradical polymerization initiator, trade name “IRGACURE 907” manufactured by Ciba Specialty Chemicals
- the photocurable resin composition (1) was applied to a polyethylene terephthalate base film (film thickness 2).
- the photocurable resin composition (2) was applied to a polyethylene terephthalate base film (film thickness 2).
- the photocurable resin composition (3) was applied to a polyethylene terephthalate base film (film thickness 2).
- the photocurable resin composition (4) was coated on a polyethylene terephthalate base film (film thickness 2).
- Carboxyl group-containing unsaturated polyurethane resin obtained by adding 1 mol of dimethylolbutanoic acid, 3 mol of tolylene diisocyanate and 1 mol of dipropylene glycol to a mixture of 2 mol of trimethylolpropane diatalylate 3 g of a polymerization initiator (Aminoalkylphenone-based photoradical polymerization initiator, trade name “Irgacure 907”, manufactured by Ciba Specialty Chemicals) and 400 g of ethyl acetate are mixed to form the photocurable resin composition of the present invention.
- the product (5) was obtained.
- Carboxyl group-containing unsaturated polyurethane resin obtained by adding 1 mol of dimethylolbutanoic acid, 3 mol of hexamethylene diisocyanate and 1 mol of dipropylene glycol to 2 mol of trimethylolpropane diatalylate ,
- a polymerization initiator (Aminoalkyl phenone-based photo-radical polymerization initiator, trade name "Irgacure 907", manufactured by Ciba Specialty Chemicals Co., Ltd.) and 400 g of ethyl acetate are mixed, and the photocurable resin composition of the present invention (6) Got.
- Photocurable ⁇ composition (2) was applied by spin coating on the surface of the silicon substrate, wavelength 365 nm, and the ultraviolet illuminance LOmWZcm 2 was irradiated for 100 seconds, the lower clad 'layer having a thickness of 40 m Obtained.
- the photocurable resin composition (1) was applied on the lower clad layer by spin coating, and dried at 80 ° C for 30 minutes. Then, ultraviolet rays having a wavelength of 365 nm and an illuminance of lOmWZcm 2 were irradiated for 100 seconds through a photomask having a linear pattern having a width of 30 / zm, to partially cure the coating film.
- the substrate having the coating film irradiated with ultraviolet light is immersed in a developing solution consisting of a 1.8% by weight aqueous solution of tetramethylammonium hydroxide (TMAH) to dissolve the unexposed portion of the coating film, and then dried. I let it. Thus, a core portion having a line pattern having a width of 30 / zm was formed.
- TMAH tetramethylammonium hydroxide
- the photocurable resin composition (2) is applied to the surface of the lower clad layer and the core part by a spin coat method, and irradiated with ultraviolet light having a wavelength of 365 nm and an illuminance of lOmWZcm 2 for 100 seconds to have a thickness of 40 ⁇ m. Was obtained.
- the photocurable dry film GO is transferred onto the surface of a silicon substrate by normal pressure hot roll bonding (temperature: 100 ° C), the base film is peeled off, and an ultraviolet ray having a wavelength of 365 nm and an illuminance of lOmWZcm 2 is applied for 100 seconds. Irradiation resulted in a 40 m thick lower cladding layer.
- a photocurable dry film (0 was transferred onto the lower clad layer by a normal pressure hot roll pressing method (temperature: 100 ° C), and the base film was peeled off. through a photomask having a line-shaped pattern, wavelength 365 nm, and the ultraviolet illuminance LOmWZcm 2 was irradiated 1 00 seconds, the coating was allowed to partially cure.
- the substrate with ultraviolet radiation coating film 1 The film was immersed in a developer consisting of an 8% by weight aqueous solution of tetramethylammonium hydroxide (TMAH) to dissolve the unexposed portion of the coating film and then dried. Having a core portion.
- TMAH tetramethylammonium hydroxide
- the photocurable dry film GO is transferred to the surface of the lower clad layer and core by the normal pressure hot-hole compression bonding method (temperature: 100 ° C), the base film is peeled off, the wavelength is 365 nm, and the illuminance is Irradiation with UV light of lOmWZcm 2 for 100 seconds resulted in a 40 m thick upper cladding layer.
- the relative refractive index difference, the transmission loss, the core gap, the accuracy of the core shape, the coverage of the core, and the workability of the obtained optical waveguide were evaluated.
- the relative refractive index difference was 0.1% or more, the transmission loss A, the core gap A, the accuracy of the core shape A, the core coverage A, and the workability A.
- Example 8 a photocurable dry film (a core portion was formed using a photocurable dry film (V) instead of 0, and a photocurable dry film was used instead of the photocurable dry film GO).
- An optical waveguide was produced in the same manner as in Example 8, except that the lower clad layer and the upper clad layer were formed using the film (vi).
- the relative refractive index difference, the transmission loss, the gap between the core portions, the accuracy of the shape of the core portion, the coverage of the core portion, and the workability of the obtained optical waveguide were evaluated.
- the relative refractive index difference is 0.1% or more.
- Photocurable ⁇ composition (4) was applied by spin coating on the surface of the silicon substrate, wavelength 365 nm, and the ultraviolet illuminance LOmWZcm 2 was irradiated for 100 seconds, the lower clad 'layer having a thickness of 40 m Obtained.
- the photocurable resin composition (3) was applied on the lower clad layer by spin coating, and dried at 80 ° C for 30 minutes. Then, ultraviolet rays having a wavelength of 365 nm and an illuminance of lOmWZcm 2 were irradiated for 100 seconds through a photomask having a linear pattern having a width of 30 / zm, to partially cure the coating film.
- the substrate having the coating film irradiated with ultraviolet light is immersed in a developing solution consisting of a 1.8% by weight aqueous solution of tetramethylammonium hydroxide (TMAH) to dissolve the unexposed portion of the coating film, and then dried. I let it. Thus, a core portion having a line pattern having a width of 30 / zm was formed.
- TMAH tetramethylammonium hydroxide
- the lower cladding layer and the surface of the core portion of the photocurable ⁇ composition (4) was applied by Supinko method, a wavelength 365 nm, by ultraviolet irradiation illuminance lOmWZcm 2 100 seconds, thickness 40 mu m was obtained.
- the relative refractive index difference is 0.1% or more, transmission loss A, core gap A, core shape accuracy B, core coverage C, and workability B.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006510329A JPWO2005081025A1 (ja) | 2004-02-25 | 2005-02-25 | 光導波路形成用光硬化性樹脂組成物、光導波路形成用光硬化性ドライフィルム及び光導波路 |
US10/588,717 US20070185300A1 (en) | 2004-02-25 | 2005-02-25 | Photocurable resin composition for optical waveguide formation, photocurable dry film for optical waveguide formation, and optical waveguide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004049826 | 2004-02-25 | ||
JP2004-049826 | 2004-02-25 |
Publications (1)
Publication Number | Publication Date |
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WO2005081025A1 true WO2005081025A1 (ja) | 2005-09-01 |
Family
ID=34879562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/003209 WO2005081025A1 (ja) | 2004-02-25 | 2005-02-25 | 光導波路形成用光硬化性樹脂組成物、光導波路形成用光硬化性ドライフィルム及び光導波路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070185300A1 (ja) |
JP (1) | JPWO2005081025A1 (ja) |
KR (1) | KR100807697B1 (ja) |
CN (1) | CN1926455A (ja) |
WO (1) | WO2005081025A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009078341A1 (ja) * | 2007-12-17 | 2009-06-25 | Hitachi Chemical Company, Ltd. | 光導波路及びその製造方法 |
WO2012026435A1 (ja) * | 2010-08-24 | 2012-03-01 | 日立化成工業株式会社 | 光導波路形成用樹脂組成物、これを用いた光導波路形成用樹脂フィルム、及びこれらを用いた光導波路 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102375339B (zh) * | 2010-08-20 | 2013-06-12 | 太阳油墨(苏州)有限公司 | 碱显影型感光性树脂组合物 |
TWI508990B (zh) | 2011-03-31 | 2015-11-21 | Panasonic Ip Man Co Ltd | Resin composition for optical waveguide, dry film, optical waveguide and photoelectric composite wiring board using the same |
JP6090655B2 (ja) * | 2013-02-12 | 2017-03-08 | パナソニックIpマネジメント株式会社 | 光導波路用ドライフィルム、それを用いた光導波路及び光電気複合配線板、並びに光電気複合配線板の製造方法 |
CN103242507B (zh) * | 2013-04-23 | 2015-02-11 | 江苏利田科技股份有限公司 | 一种8官能度聚氨酯丙烯酸酯及其制备方法和应用 |
CN103224603B (zh) * | 2013-04-23 | 2015-03-25 | 江苏利田科技股份有限公司 | 一种6官能度聚氨酯丙烯酸酯及其制备方法和应用 |
CN106120344B (zh) * | 2016-06-24 | 2017-11-28 | 国网湖南省电力公司带电作业中心 | 表面处理组合物及绝缘纤维、纱线、绳索及其制备方法 |
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- 2005-02-25 WO PCT/JP2005/003209 patent/WO2005081025A1/ja active Application Filing
- 2005-02-25 US US10/588,717 patent/US20070185300A1/en not_active Abandoned
- 2005-02-25 KR KR1020067019825A patent/KR100807697B1/ko not_active IP Right Cessation
- 2005-02-25 CN CNA2005800061413A patent/CN1926455A/zh active Pending
- 2005-02-25 JP JP2006510329A patent/JPWO2005081025A1/ja active Pending
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009078341A1 (ja) * | 2007-12-17 | 2009-06-25 | Hitachi Chemical Company, Ltd. | 光導波路及びその製造方法 |
US8620127B2 (en) | 2007-12-17 | 2013-12-31 | Hitachi Chemical Company, Ltd. | Optical waveguide and method for manufacturing the same |
JP5413200B2 (ja) * | 2007-12-17 | 2014-02-12 | 日立化成株式会社 | 光導波路及びその製造方法 |
WO2012026435A1 (ja) * | 2010-08-24 | 2012-03-01 | 日立化成工業株式会社 | 光導波路形成用樹脂組成物、これを用いた光導波路形成用樹脂フィルム、及びこれらを用いた光導波路 |
JPWO2012026435A1 (ja) * | 2010-08-24 | 2013-10-28 | 日立化成株式会社 | 光導波路形成用樹脂組成物、これを用いた光導波路形成用樹脂フィルム、及びこれらを用いた光導波路 |
JP5892066B2 (ja) * | 2010-08-24 | 2016-03-23 | 日立化成株式会社 | 光導波路形成用樹脂組成物、これを用いた光導波路形成用樹脂フィルム、及びこれらを用いた光導波路 |
US9605143B2 (en) | 2010-08-24 | 2017-03-28 | Hitachi Chemicals Company, Ltd. | Resin composition for formation of optical waveguide, resin film for formation of optical waveguide which comprises the resin composition, and optical waveguide produced using the resin composition or the resin film |
Also Published As
Publication number | Publication date |
---|---|
US20070185300A1 (en) | 2007-08-09 |
KR20060126617A (ko) | 2006-12-07 |
CN1926455A (zh) | 2007-03-07 |
JPWO2005081025A1 (ja) | 2007-10-25 |
KR100807697B1 (ko) | 2008-02-28 |
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