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. 20, 2003
Filed:
Mar. 23, 2001
Applicant:
Inventors:
Theo Mayer, Julbach, DE;
Peter Fritze, Haiming, DE;
Reinold Härzschel, Burghausen, DE;
Hans-Peter Weitzel, Reischach, DE;
Assignee:
Wacker-Chemie GmbH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/00 ; C08K 3/30 ; C08K 3/26 ; C08L 2/504 ; B05D 3/02 ;
U.S. Cl.
CPC ...
C08J 3/00 ; C08K 3/30 ; C08K 3/26 ; C08L 2/504 ; B05D 3/02 ;
Abstract
The vinyl aromatic-1,3-diene copolymers stabilized with protection colloids are used in the form of aqueous polymer dispersions or water-redispersible polymer powders for modifying materials that contain plaster or calcium carbonate. The polymer dispersions or polymer powders are obtained by the emulsion-polymerization of a mixture containing at least one vinyl aromatic and at least one 1,3-diene in the presence of at least one protection colloid and without any emulsifier, and by optionally drying the aqueous polymer dispersions thus obtained.