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:
Apr. 28, 2026
Filed:
Sep. 28, 2021
Mitsubishi Chemical Corporation, Tokyo, JP;
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Abstract
An object of the present invention is to provide a PVA-based resin having a degree of saponification obtained in the middle stage of the reaction, that is, an average degree of saponification of 68 mol % to 85 mol %, a narrow degree of saponification distribution, and excellent dispersion stability. The present invention relates to a polyvinyl alcohol-based resin having an average degree of saponification of 68 mol % to 85 mol %, and a ¼ value width of 7.0 minutes or less in a degree of saponification distribution obtained by high performance liquid chromatogram measured under specific conditions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile