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:
Jul. 14, 2020
Filed:
May. 08, 2017
Tokushima University, Tokushima, JP;
Sekisui Chemical Co., Ltd., Osaka, JP;
Koichi Ute, Tokushima, JP;
Tomohiro Hirano, Tokushima, JP;
Miyuki Oshimura, Tokushima, JP;
Yasunari Kusaka, Osaka, JP;
TOKUSHIMA UNIVERSITY, Tokushima, JP;
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
Abstract
The present invention provides a vinyl alcohol-vinyl acetate copolymer having excellent solubility and a method for producing a vinyl alcohol-vinyl acetate copolymer. Provided is a vinyl alcohol-vinyl acetate copolymer including a unit of vinyl alcohol and a unit of vinyl acetate, the vinyl alcohol-vinyl acetate copolymer having a randomness value R of 0.5 or higher, the randomness value R being obtained using the following equation (1): where Lrepresents a mean chain length of the unit of vinyl alcohol and Lrepresents a mean chain length of the unit of vinyl acetate.