The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2022
Filed:
Oct. 17, 2017
Applicant:
Japan Vam & Poval Co., Ltd., Osaka, JP;
Inventors:
Takehiro Omori, Osaka, JP;
Yoshiaki Kozuka, Osaka, JP;
Assignee:
Japan Vam & Poval Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/12 (2006.01); C08F 8/28 (2006.01); C08F 16/06 (2006.01); C08F 18/08 (2006.01); C08F 14/06 (2006.01); C08L 29/04 (2006.01); C08L 29/14 (2006.01); C08F 2/20 (2006.01);
U.S. Cl.
CPC ...
C08F 16/06 (2013.01); C08F 2/20 (2013.01); C08F 8/12 (2013.01); C08F 8/28 (2013.01); C08F 14/06 (2013.01); C08F 18/08 (2013.01); C08L 29/04 (2013.01); C08F 2500/02 (2013.01); C08L 29/14 (2013.01);
Abstract
Provided is a dispersion assistant useful for suspension polymerization of vinyl-based compounds. The dispersion assistant comprises a polyvinyl alcohol-based polymer (A) comprising a constituent unit represented by the general formula (1) shown below at 0.1 to 10 mol % per polyvinyl alcohol monomer unit and having a saponification degree of 15 to 70 mol %. (In the formula, R denotes an alkyl group.)