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:
Feb. 26, 2019
Filed:
Oct. 16, 2015
Applicant:
Kuraray Co., Ltd., Kurashiki-shi, JP;
Inventors:
Assignee:
KURARAY CO., LTD., Kurashiki-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09D 129/04 (2006.01); C09J 7/21 (2018.01); C08F 16/06 (2006.01); D21H 19/20 (2006.01); C08F 216/06 (2006.01); D21H 27/00 (2006.01); C09J 7/20 (2018.01);
U.S. Cl.
CPC ...
C08F 216/06 (2013.01); C08F 16/06 (2013.01); C09D 129/04 (2013.01); C09J 7/201 (2018.01); C09J 7/21 (2018.01); D21H 19/20 (2013.01); D21H 27/00 (2013.01); D21H 27/001 (2013.01); C09J 2400/28 (2013.01); C09J 2429/005 (2013.01); C09J 2483/00 (2013.01);
Abstract
There is provided a vinyl alcohol-based polymer having an ethylenic double bond with a saponification degree of 70 mol % or more, wherein the vinyl alcohol-based polymer is water-soluble; a molar ratio of the ethylenic double bond to the total of vinyl alcohol units and vinyl acetate units is 0.05/100 to 2/100; and a limiting viscosity [η] and a weight-average molecular weight Mw of a vinyl ester-based polymer which is produced by esterifying the vinyl alcohol-based polymer satisfy the following formulas (1) and (2).4.7≤log Mw 6.3  (1)0.60<(log [η]+3.75)/log Mw<0.69  (2)