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:
Mar. 25, 1980
Filed:
Sep. 08, 1978
Applicant:
Inventors:
Masahiro Kobayashi, Tokushima, JP;
Tadao Yabuhara, Tokushima, JP;
Assignee:
Otsuka Chemical Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
260 / ; 260 / ;
Abstract
A process for stabilizing an aqueous solution of an acrylic or methacrylic hydrazide polymer by adding to the aqueous solution, at least an equal amount of hydrazine hydrate and/or a water-soluble alkaline earth metal salt of an inorganic acid based on the weight of the acrylic or methacrylic hydrazide polymer.