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:
Nov. 20, 2007
Filed:
May. 11, 2004
Walter H. Ohrbom, Hartland Township, MI (US);
Timothy S. December, Rochester Hills, MI (US);
Joann Lanza, Farmington Hills, MI (US);
Robert D. Weise, Harper Woods, MI (US);
Walter H. Ohrbom, Hartland Township, MI (US);
Timothy S. December, Rochester Hills, MI (US);
JoAnn Lanza, Farmington Hills, MI (US);
Robert D. Weise, Harper Woods, MI (US);
BASF Corporation, Southfield, MI (US);
Abstract
An aqueous thermosetting primer composition includes a polyurethane polymer, an acrylic polymer polymerized in a wax having crosslinkable functionality, and a crosslinking component that is reactive with the wax and at least one of the polyurethane polymer and the acrylic polymer. The polyurethane polymer has a glass transition temperature of 0° C. or less. The acrylic polymer has a glass transition temperature that is at least about 20° C. higher than the glass transition temperature of polyurethane resin. The invention further provides a composite coating having as a primer layer a cured layer of the primer composition of the invention and having at least one topcoat layer.