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:
Dec. 17, 2019
Filed:
Sep. 18, 2015
Applicant:
Kuraray Co., Ltd., Kurashiki-shi, JP;
Inventors:
Assignee:
KURARAY CO., LTD., Kurashiki-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/12 (2006.01); B65D 65/46 (2006.01); C08J 5/18 (2006.01); C08K 5/053 (2006.01); C11D 17/04 (2006.01);
U.S. Cl.
CPC ...
C08F 8/12 (2013.01); B65D 65/46 (2013.01); C08J 5/18 (2013.01); C08K 5/053 (2013.01); C11D 17/042 (2013.01); C08J 2329/04 (2013.01);
Abstract
The present invention provides: a water-soluble film that is superior in cold water solubility and in practical properties such as strength and stiffness and that can resist deterioration in various properties such as chemical resistance over time; and a modified polyvinyl alcohol used for the water-soluble film. The present invention relates to a modified polyvinyl alcohol containing 0.05 to 10 mol % of a monomer unit having two carboxyl groups. InH-NMR spectroscopy of the modified polyvinyl alcohol, an integral (X) from 6.8 to 7.2 ppm and an integral (Y) from 5.3 to 5.5 ppm satisfy the following expression:0.60≤/()<1.0.