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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.:

US 10538657 B1

PDFFull Text
Date of Patent:
Jan. 21, 2020

Filed:

Feb. 18, 2016

Polymer blends in the form of aqueous dispersions or powders that can be redispersed in water

Applicant:

Wacker Chemie Ag, Munich, DE;

Inventors:

Hans-Peter Weitzel, Reischach, DE;

Ulf Dietrich, Burghausen, DE;

Peter Fritze, Haiming, DE;

Klas Sorger, Munich, DE;

Assignee:

Wacker Chemie AG, Munich, DE;

Attorney:

Brooks Kushman P.C.

Primary Examiner:

Patrick D Niland

Int. Cl.
CPC ...
C04B 28/04 (2006.01); C04B 40/00 (2006.01); C08L 31/04 (2006.01); C09D 5/02 (2006.01); C09D 5/03 (2006.01); C09D 5/34 (2006.01); C09D 131/04 (2006.01); C09J 131/04 (2006.01); C04B 103/00 (2006.01); C04B 111/00 (2006.01); C04B 111/60 (2006.01); C04B 111/70 (2006.01); C04B 111/72 (2006.01);
U.S. Cl.
CPC ...
C08L 31/04 (2013.01); C04B 28/04 (2013.01); C04B 40/0039 (2013.01); C04B 40/0042 (2013.01); C09D 5/022 (2013.01); C09D 5/03 (2013.01); C09D 5/34 (2013.01); C09D 131/04 (2013.01); C09J 131/04 (2013.01); C04B 2103/0057 (2013.01); C04B 2111/00517 (2013.01); C04B 2111/00637 (2013.01); C04B 2111/00672 (2013.01); C04B 2111/60 (2013.01); C04B 2111/70 (2013.01); C04B 2111/72 (2013.01); C08L 2201/50 (2013.01); C08L 2205/02 (2013.01); C08L 2205/025 (2013.01);
Abstract

Open time and creep resistance of hydraulically settable inorganic construction materials such as mortars and tile adhesives are both improved at the same time by the addition of a polymer mixture in the form of an aqueous dispersion or water-redispersible powder, containing one or more protective colloid-stabilized polymers having units derived from 20% to 30% by weight of vinyl chloride, 50% to 75% by weight of vinyl acetate, 5% to 20% by weight of ethylene, and one or more protective colloid-stabilized, vinyl halide-free polymers of one or more ethylenically unsaturated monomers.

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