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. 27, 2015
Filed:
Dec. 11, 2012
Sebastian Roller, Mannheim, DE;
Rolf Dersch, Neustadt, DE;
Uwe Dittrich, Dannstadt-Schauernheim, DE;
Roelof Balk, Boehl-Iggelheim, DE;
Bas Lohmeijer, Mannheim, DE;
Ulrich Tromsdorf, Plankstadt, DE;
Sebastian Roller, Mannheim, DE;
Rolf Dersch, Neustadt, DE;
Uwe Dittrich, Dannstadt-Schauernheim, DE;
Roelof Balk, Boehl-Iggelheim, DE;
Bas Lohmeijer, Mannheim, DE;
Ulrich Tromsdorf, Plankstadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Coating compositions containing an aqueous polymer dispersion having improved resistance toward chemicals. The aqueous polymer dispersion is prepared by polymerizing a first composition containing at least one ethylenically unsaturated group (monomers) by radical aqueous emulsion polymerization and then, in the presence of a product mixture from the previous polymerization, polymerizing a second composition containing at least one ethylenically unsaturated group (monomers) by radical aqueous emulsion polymerization. The coating compositions are such that the difference between a glass transition temperature of a polymer prepared from the first polymerization and a glass transition temperature of a polymer prepared from the second polymerization is at least 50° C.