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. 30, 2001
Filed:
Dec. 15, 1998
Applicant:
Inventors:
Günter Sackmann, Leverkusen, DE;
Eckhard Wenz, Köln, DE;
Joachim König, Odenthal, DE;
Bernhard Jansen, Köln, DE;
Thomas Roick, Leverkusen, DE;
Bernd Thiele, Odenthal, DE;
Johan Kijlstra, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/20 ; C08F 2/24 ; C08F / ; C08L 3/500 ; C08L 7/504 ;
U.S. Cl.
CPC ...
C08F 2/20 ; C08F 2/24 ; C08F / ; C08L 3/500 ; C08L 7/504 ;
Abstract
This invention relates to novel aqueous emulsion polymers obtained by free-radical initiated addition polymerization of at least one monomer in the presence of degraded starch and at least one polymeric emulsifier from the series of sulfo-containing maleic anhydride copolymers and/or sulfo-containing oligourethanes with a branched molecular structure. The invention further relates the use of such emulsion polymers as surface sizing agents for paper and paperlike materials.