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:
Apr. 29, 1980
Filed:
Jun. 16, 1978
Applicant:
Inventors:
Karl Peterlein, Gladbeck, DE;
Felix Schulde, Wulfen, DE;
Klaus M Diedrich, Gladbeck, DE;
Volker W Kulisch, Gladbeck, DE;
Assignee:
Chemische Werke Huls A.G., Herne, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ;
Abstract
Paper surface sizing agents based on aqueous solutions ofcopolymers of maleic acid anhydride and dicyclopentadiene, which are further reacted after preparation to produce the half amides with ammonia, or primary or secondary aliphatic amines.