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. 07, 2013
Filed:
Dec. 22, 2010
Joseph M. Rokowski, Barto, PA (US);
Jonathan M. Wegner, Duluth, MN (US);
Joseph M. Rokowski, Barto, PA (US);
Jonathan M. Wegner, Duluth, MN (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The present invention provides elastomeric roof coatings made from emulsion copolymers having a glass transition temperature (Tg) of from −25° C. to 20° C., a weight average molecular weight of from 50,000 to 150,000, a weight average particle size of from 100 to 500 nm, and copolymerized a monomer mixture of 20 wt. % or more, preferably 25 wt. % or more, of one or more hydrophobic monomer chosen from Cto Calkyl (meth)acrylates and 0.2 to 5 wt. % of one or more ethylenically unsaturated acid functional monomer and containing aminosilanes which give excellent wet adhesion to weathered substrates, especially weathered thermoplastic polyolefin (TPO).