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. 09, 1985
Filed:
Sep. 17, 1984
Applicant:
Inventors:
Takeshi Fujita, Kyoto, JP;
Shigeo Mori, Kyoto, JP;
Hironori Kataoka, Yamatokoriyama, JP;
Akira Taniuchi, Kyoto, JP;
Assignee:
Dai-Ichi Kogyo Seiyaku Co., Ltd., Kyoto, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
528297 ; 528301 ; 528405 ;
Abstract
A water-soluble film or sheet made of a polyoxyalkylene compound having an average molecular weight of at least 50,000 produced by linking chains of a polyether having an average molecular weight of at least 3,000 and an oxyethylene unit content of at least 70% by weight with each other through ester linkages by reaction of the polyether and a polycarboxylic acid, its anhydride or its lower alkyl ester. The film or sheet is also soluble in organic solvents and has properties comparable or superior to known water-soluble polymer films or sheets.