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:
Oct. 05, 1976
Filed:
Mar. 24, 1975
Applicant:
Inventors:
Hans-Jurgen Lienert, Cologne, DT;
Hans Schuster, Schildgen, DT;
Karl Schafer, Opladen, DT;
Friedrich Reich, Leverkusen, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; D06M / ; D06M / ;
U.S. Cl.
CPC ...
260 / ; 81276 ; 8128 / ; 162164 ; 260 / ; 260 / ;
Abstract
An aqueous solution of bisulphite blocked polyisocyanate prepolymers is imparted improved storage stability at temperatures up to about 45.degree. C by incorporation of about 0.5 to 20% by weight (based on the weight of bisulphite blocked prepolymer) of an aromatic or alkyl aromatic sulphonic acid of the formula: