Curable composition

Patent metadata

Field	Value
Publication number	US-10954419-B2
Application number	US-201815943198-A
Country	US
Kind code	B2
Filing date	Apr 2, 2018
Priority date	Oct 2, 2015
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

A curable composition includes a (meth)acrylic acid ester polymer (A), wherein the (meth)acrylic acid ester polymer (A) includes a monomer and a macromonomer (a). The monomer includes a reactive silicon group represented by the general formula (1): —SiR 1 a X 3-a (1) (in the formula, R 1 represents a substituted or unsubstituted hydrocarbon group with 1 to 20 carbon atoms, X each independently represents a hydroxyl group or a hydrolyzable group, and a represents 0 or 1.) and a polymerizable unsaturated group. The macromonomer (a) is a (meth)acrylic acid ester polymer having a polymerizable unsaturated group.

First claim

The invention claimed is:

1. A curable composition comprising: a (meth)acrylic acid ester polymer (A); and a polyoxyalkylene-based polymer (B),
wherein the (meth)acrylic acid ester polymer (A) comprises, as constituent monomers, a monomer and a macromonomer (a),
wherein the monomer comprises a reactive silicon group represented by the general formula (1):
—SiR 1 a X 3-a   (1)

(in the formula, R 1 represents a substituted or unsubstituted hydrocarbon group with 1 to 20 carbon atoms, X each independently represents a hydroxyl group or a hydrolyzable group, and a represents 0 or 1.)
and a polymerizable unsaturated group,
wherein the macromonomer (a) is a (meth)acrylic acid ester polymer having a polymerizable unsaturated group,
wherein a content of the macromonomer (a) in the constituent monomers is 10 to 50% by weight, and
wherein the polyoxyalkylene-based polymer (B) comprises a reactive silicon group represented by the general formula (1).

2. The curable composition according to claim 1 , wherein, with regard to the reactive silicon group contained in the polyoxyalkylene-based polymer (B), a in the general formula (1) is 1.

3. The curable composition according to claim 1 , wherein the macromonomer (a) has a molecular weight distribution (Mw/Mn) of 1.5 or less, a glass transition temperature (Tg) of lower than 50° C., and a number average molecular weight of 1,000 to 30,000.

4. The curable composition according to claim 1 , wherein Tg of the macromonomer (a) (branch chain) is lower than Tg of a stem chain constituting the (meth)acrylic acid ester polymer (A).

Assignees

• Kaneka Corp

Inventors

• Miyafuji Kiyoshi

Classifications

• C09J183/12

  containing polyether sequences · CPC title

• C08L55/00

  Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00 · CPC title

• C08F290/04

  Polymers provided for in subclasses C08C or C08F · CPC title

• C09J133/14

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title