Photosensitive adhesive composition

Patent metadata

Field	Value
Publication number	US-2019211242-A1
Application number	US-201716329068-A
Country	US
Kind code	A1
Filing date	Aug 25, 2017
Priority date	Aug 30, 2016
Publication date	Jul 11, 2019
Grant date	—

Abstract

A novel photosensitive adhesive composition including the following components (A), (B), (C), and (D): Component (A): a polymer having a structural unit of the following formula (1) and a structure of the following formula (2) at a terminal, Component (B): a polymer having the structural unit of formula (1), and a carboxy group or hydroxy group at a terminal, Component (C): a radical photopolymerization initiator, and Component (D): a solvent, wherein the content by mass of the component (B) is larger than that of the component (A),

(wherein X is a C 1-6 alkyl group, a vinyl group, an allyl group, or a glycidyl group, m and n are each independently 0 or 1, Q is a divalent C 1-16 hydrocarbon group, Z is a divalent C 1-4 linking group, the divalent linking group being bonded to an —O— group in formula (1), and R 1 is a hydrogen atom or a methyl group.)

First claim

1 . A photosensitive adhesive composition comprising the following components (A), (B), (C), and (D):
Component (A): a polymer having a structural unit of the following formula (1) and a structure of the following formula (2) at a terminal, Component (B): a polymer having the structural unit of formula (1), and a carboxy group or hydroxy group at a terminal, Component (C): a radical photopolymerization initiator, and Component (D): a solvent, wherein the content by mass of the component (B) is larger than that of the component (A),

(wherein X is a C 1-6 alkyl group, a vinyl group, an allyl group, or a glycidyl group, m and n are each independently 0 or 1, Q is a divalent C 1-16 hydrocarbon group, Z is a divalent C 1-4 linking group, the divalent linking group being bonded to an —O— group in formula (1), and R 1 is a hydrogen atom or a methyl group.

2 . The photosensitive adhesive composition according to claim 1 , wherein the divalent hydrocarbon group of Q in formula (1) is a linear or branched alkylene group, a group containing two carbon atoms bonded through a double bond, or a group containing in a main chain an alicyclic hydrocarbon group or aromatic hydrocarbon group optionally having at least one substituent.

3 . The photosensitive adhesive composition according to claim 1 , wherein the divalent linking group of Z in formula (2) is a linear or branched alkylene group optionally having at least one hydroxy group as a substituent.

4 . The photosensitive adhesive composition according to claim 1 , wherein the mass ratio of the component (A) to the component (B) is 1:2 to 1:20.

5 . The photosensitive adhesive composition according to claim 1 , further comprising a bifunctional (meth)acrylate and/or a multifunctional thiol.

6 . An adhesion method comprising steps of:
applying the photosensitive adhesive composition according to claim 1 to a first substrate; pre-baking the photosensitive adhesive composition applied to the first substrate at 50° C. to 160° C.; exposing the coating film on the first substrate after the pre-baking; developing the coating film after the exposure; and bonding a second substrate to the first substrate after the development and thermally curing the coating film by heating.

Assignees

• Nissan Chemical Corp

Inventors

• Ohashi Takuya
• Enomoto Tomoyuki
• Kishioka Takahiro

Classifications

• C09J179/04 Primary

  Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors · CPC title

• C09J11/06

  organic · CPC title

• C08F290/061

  Polyesters; Polycarbonates · CPC title

• C08F290/064

  Polymers containing more than one epoxy group per molecule · CPC title

• C09J9/00

  Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks (C09J7/00 takes precedence) · CPC title