Polymer composition containing modified chlorinated polyolefin and method for producing same

Patent metadata

Field	Value
Publication number	US-10968304-B2
Application number	US-201816488483-A
Country	US
Kind code	B2
Filing date	Feb 15, 2018
Priority date	Feb 24, 2017
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

Provided are: a method for producing a polymer composition containing a modified chlorinated polyolefin, which exhibits excellent production stability; and a coating material which contains a polymer composition containing a modified chlorinated polyolefin. According to the present invention, a polymer composition containing a modified chlorinated polyolefin is obtained by copolymerizing polymerizable monomers including (b) a chlorinated polyolefin having an allyloxy group and (c) one or more compounds selected from among (meth)acrylic acid esters, (meth)acrylic acids and styrene in the coexistence of (a) a compound having an allyloxy group and a hydroxyl group.

First claim

The invention claimed is:

1. A method for producing a polymer composition containing a modified chlorinated polyolefin, the method including a step of copolymerizing a chlorinated polyolefin that has an allyloxy group (b), and a polymerizable monomer including one or more compounds (c) selected from the group consisting of (meth)acrylic acid esters, (meth)acrylic acid and styrene, in the co-presence of a compound that has an allyloxy group and a hydroxyl group (a), to obtain a modified chlorinated polyolefin,
wherein the compound that has an allyloxy group and a hydroxyl group (a) is a compound represented by the following formula (I):

wherein R 1 and R 2 each independently represent an alkylene group of 2 or 3 carbon atoms that is optionally branched, m and n each independently represent a real number of 0 to 50, the sum of m and n being a real number of 1 or greater, and the structure may be a block structure or random structure.

2. The method according to claim 1 , wherein the chlorinated polyolefin that has an allyloxy group (b) is obtained by addition reaction of a chlorinated polyolefin that has an acid anhydride group (d) and a compound that has an allyloxy group and a hydroxyl group (a) represented by formula (I).

3. The method according to claim 1 , wherein the compound that has an allyloxy group and a hydroxyl group (a) is an allyloxyethanol.

4. A polymer composition containing a modified chlorinated polyolefin, which is obtained by copolymerizing a chlorinated polyolefin that has an allyloxy group (b), and a polymerizable monomer including one or more compounds (c) selected from the group consisting of (meth)acrylic acid esters, (meth)acrylic acid and styrene, in the co-presence of a compound that has an allyloxy group and a hydroxyl group (a),
wherein the compound that has an allyloxy group and a hydroxyl group (a) is a compound represented by the following formula (I):

wherein R 1 and R 2 each independently represent an alkylene group of 2 or 3 carbon atoms that is optionally branched, m and n each independently represent a real number of 0 to 50, the sum of m and n being a real number of 1 or greater, and the structure may be a block structure or random structure.

5. A curable composition that includes a polymer composition according to claim 4 and a hydroxyl group-reactive crosslinking agent.

6. A coating composition that includes a polymer composition according to claim 4 .

7. The coating composition according to claim 6 , which further includes a hydroxyl group-reactive crosslinking agent.

Assignees

• Kansai Paint Co Ltd

Inventors

• Kobata Masami

Classifications

• C08F212/08

  Styrene · CPC title

• C08F255/023 Primary

  On to modified polymers, e.g. chlorinated polymers · CPC title

• C08F220/18

  with acrylic or methacrylic acids · CPC title

• C08F2810/30

  leading to the formation or introduction of aliphatic or alicyclic unsaturated groups · CPC title

• C08F290/122

  Polymers of hydrocarbons as defined in group C08F10/00 · CPC title