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. 01, 1979
Filed:
Dec. 05, 1974
Applicant:
Inventors:
Gunter Sackmann, Opladen, DE;
Wulf VON Bonin, Leverkusen, DE;
Friedhelm Muller, Odenthal, Berg.-Gladbach, DE;
Gunter Kolb, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 526272 ; 526318 ;
Abstract
Anionic sizes for paper or a paper-like material. Substantially equimolecular copolymers of maleic acid anhydride and diisobutylene are esterified to form the corresponding semi-esters. From 10 to 100 mol-% of the anhydride groups are reacted with an aliphatic or cycloaliphatic alcohol. At least 50 mol-% of the formed carboxylic groups are neutralized with alkali, ammonia or aliphatic amines.