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:
Mar. 13, 2018
Filed:
Feb. 04, 2015
Applicant:
Kuraray Co., Ltd., Kurashiki-shi, JP;
Inventors:
Assignee:
KURARAY CO., LTD., Kurashiki-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F 114/06 (2006.01); C08F 2/20 (2006.01); C08F 8/12 (2006.01); C08F 118/08 (2006.01); C08F 216/06 (2006.01); C08F 116/06 (2006.01); B01F 17/00 (2006.01); C08F 14/06 (2006.01); C08F 8/00 (2006.01); C08F 220/44 (2006.01); C08F 220/56 (2006.01);
U.S. Cl.
CPC ...
C08F 114/06 (2013.01); B01F 17/0028 (2013.01); C08F 2/20 (2013.01); C08F 8/00 (2013.01); C08F 8/12 (2013.01); C08F 14/06 (2013.01); C08F 116/06 (2013.01); C08F 118/08 (2013.01); C08F 216/06 (2013.01); C08F 220/44 (2013.01); C08F 220/56 (2013.01); C08F 2810/30 (2013.01);
Abstract
There is provided a dispersing agent for suspension polymerization of a vinyl compound comprising a polyvinyl alcohol with a saponification degree of 65 to 90 mol % which satisfies Formulas (1) to (3). It allows for reducing the amount of coarse particles during polymerization and can thus provide a vinyl polymer with a sharp particle size distribution and higher plasticizer absorbability.0.4≦()≦0.95  (1)3≦()≦12  (2)0.1≦≦0.8  (3)