Photocurable film-forming composition and manufacturing method for cured film

Patent metadata

Field	Value
Publication number	US-10494480-B2
Application number	US-201213985541-A
Country	US
Kind code	B2
Filing date	Feb 15, 2012
Priority date	Feb 15, 2011
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A composition comprising both a polymer which contains triazine-ring-containing repeating units represented by formula (17) and a crosslinking agent which consists of either a poly-functional epoxy compound or a polyfunctional (meth)acrylic compound can be photo-cured even without the addition of an initiator to yield a cured film having a high refractive index and high heat resistance. Thus, a photocurable film-forming composition that comprises a triazine-ring-containing polymer, which can achieve, even without the addition of a metal oxide by the polymer alone, high heat resistance, high transparency, a high refractive index, high solubility and low volume shrinkage, and that is curable even without the addition of an acid generator can be provided.

First claim

The invention claimed is:

1. A method of manufacturing a cured film, the method being comprised of irradiating with light and thereby curing a photocurable film-forming composition comprising a triazine-ring-containing polymer which includes a recurring unit structure of formula (1) below

wherein R and R′ are each independently a hydrogen atom, an alkyl group, an alkoxy group, an aryl group or an aralkyl group; and Ar is at least one moiety selected from the group consisting of moieties of formulas (2) to (13) below

in which R 1 to R 92 are each independently a hydrogen atom, a halogen atom, a carboxyl group, a sulfonyl group, an alkyl group which may have a branched structure of 1 to 10 carbons, or an alkoxy group which may have a branched structure of 1 to 10 carbons; R 93 and R 94 are hydrogen atoms or alkyl groups which may have a branched structure of 1 to 10 carbons; W 1 and W 2 are each independently a single bond, CR 95 R 96 , R 95 and R 96 being each independently a hydrogen atom or an alkyl group which may have a branched structure of 1 to 10 carbons, with the proviso that R 95 and R 96 may together form a ring, C═O, O, S, SO, SO 2 or NR 97 , R 97 being a hydrogen atom or an alkyl group which may have a branched structure of 1 to 10 carbons; and X 1 and X 2 are each independently a single bond, an alkylene group which may have a branched structure of 1 to 10 carbons, or a group of formula (14) below

R 98 to R 101 being each independently a hydrogen atom, a halogen atom, a carboxyl group, a sulfonyl group, an alkyl group which may have a branched structure of 1 to 10 carbons, or an alkoxy group which may have a branched structure of 1 to 10 carbons; and Y 1 and Y 2 being each independently a single bond or an alkylene group which may have a branched structure of 1 to 10 carbons, and a crosslinking agent, wherein the crosslinking agent is a polyfunctional (meth)acrylate compound, wherein the polyfunctional (meth)acrylate compound comprises a polyfunctional (meth)acrylate compound having an isocyanuric acid skeleton,
wherein the photocurable film-forming composition does not include any initiators and can be cured without using an initiator.

2. The method according to claim 1 , wherein the polyfunctional (meth)acrylate compound is a combination of a compound having an isocyanuric acid skeleton and a compound which at 25° C. is a liquid and has a viscosity of 5,000 mPa·s or less.

3. The method according to claim 1 , wherein the polyfunctional (meth)acrylate compound is a compound which at 25° C. is a liquid and has a viscosity of 5,000 mPa·s or less.

4. The method according to claim 1 or 2 , wherein the compound having an isocyanuric acid skeleton is tris[2-(acryloyloxy)ethyl] isocyanurate.

5. The method according to claim 1 , wherein the photocurable film-forming composition includes from 1 to 25 parts by weight of the crosslinking agent per 100 parts by weight of the triazine ring-containing polymer.

6. A cured film obtained by the method of manufacturing a cured film according to claim 1 .

7. An electronic device comprising a base material and the cured film of claim 6 formed on the base material.

Assignees

• Nishimura Naoya
• Ozawa Masaaki
• Nissan Chemical Ind Ltd

Inventors

• Nishimura Naoya
• Ozawa Masaaki

Classifications

• C08L63/00

  Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title

• C08L2203/16

  used for films · CPC title

• C08J2463/00

  Characterised by the use of epoxy resins; Derivatives of epoxy resins · CPC title

• C08G73/0644 Primary

  Poly(1,3,5)triazines · CPC title

• C08G59/56

  together with other curing agents · CPC title