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:
Aug. 29, 1978
Filed:
Dec. 17, 1976
Applicant:
Inventor:
Tohru Miyajima, Ebina, JP;
Assignees:
Kyoritsu Yuki Co., Ltd., Tokyo, JP;
Mitsubishi Chemical Industries Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 27 ; 526-2 ; 526-3 ; 526-4 ; 526 30 ; 526 41 ; 526 477 ; 526 55 ; 528487 ;
Abstract
Modification reaction of water-soluble polymers such as hydrolysis, sulfomethylation, the Hofmann degradation or the Mannich reaction of polyacrylamide are carried out by dispersing the polymer in an aqueous solution of water soluble salt of an alkali metal or magnesium and a di or polybasic inorganic acid and contacting the dispersed polymer with a modifying agent.