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:
May. 22, 1979
Filed:
Oct. 13, 1977
Applicant:
Inventors:
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08L / ;
U.S. Cl.
CPC ...
260 / ; 128284 ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 521 31 ; 521 32 ; 526-7 ; 526-9 ; 526 10 ; 526 11 ; 526328 ; 526329 ;
Abstract
A method for the preparation of water-insoluble gels containing at least a hydroxyl group and a carboxylate group in molecules thereof which comprises saponifying copolymers comprising a vinyl ester component and an acrylic or methacrylic acid ester component or terpolymers comprising said two components and an ethylene component in the presence of an alkali catalyst and a solvent under conditions in which said copolymers or terpolymers are not dissolved.