Production method for vinyl ether polymer

Patent metadata

Field	Value
Publication number	US-9447212-B2
Application number	US-201414773693-A
Country	US
Kind code	B2
Filing date	Mar 7, 2014
Priority date	Mar 8, 2013
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

The production method for a vinyl ether polymer of the present technology comprises the step of subjecting a vinyl ether monomer to radical polymerization in a mixed solvent to form a vinyl ether polymer. The mixed solvent is a mixed solvent in which the mass ratio of isopropyl alcohol to dimethylformamide is from 93:7 to 75:25, or a mixed solvent in which the mass ratio of isopropyl alcohol to water is from 50:50 to 5:95, and a mass ratio of the vinyl ether monomer to the mixed solvent is from 3:100 to 45:100.

First claim

What is claimed is:

1. A production method for a vinyl ether polymer using a vinyl ether monomer,
the method comprising the step of subjecting a vinyl ether monomer to radical polymerization in a mixed solvent to form a vinyl ether polymer;
the mixed solvent being a mixed solvent in which a mass ratio of isopropyl alcohol to dimethylformamide is from 93:7 to 75:25; and
a mass ratio of the vinyl ether monomer to the mixed solvent being from 3:100 to 45:100.

2. The production method for a vinyl ether polymer according to claim 1 , wherein the vinyl ether monomer is a compound represented by any one of the following formulae (1) to (4):

3. The production method for a vinyl ether polymer according to claim 1 , wherein a polymerization initiator used in the radical polymerization is an azo or peroxide initiator.

4. The production method for a vinyl ether polymer according to claim 3 , wherein a 10-hour half-life temperature of the polymerization initiator is 100° C. or lower.

5. The production method for a vinyl ether polymer according to claim 2 , wherein a polymerization initiator used in the radical polymerization is an azo or peroxide initiator.

6. The production method for a vinyl ether polymer according to claim 5 , wherein a 10-hour half-life temperature of the polymerization initiator is 100° C. or lower.

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Okamatsu Takahiro

Classifications

• C08F116/14

  Monomers containing only one unsaturated aliphatic radical · CPC title

• C08F2/04 Primary

  Polymerisation in solution (C08F2/32 takes precedence) · CPC title

• C08F216/1416

  Monomers containing oxygen in addition to the ether oxygen, e.g. allyl glycidyl ether · CPC title

• C08F116/20 Primary

  Monomers containing three or more carbon atoms in the unsaturated aliphatic radical · CPC title