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:
Jan. 16, 2001
Filed:
Jan. 29, 1999
Josef Huybrechts, Oud-Turnhout, BE;
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Graft and block copolymers with a weight average molecular weight below 20,000, a hydroxy value more than 200 and acid value below 50 which copolymers comprise (a) 20-98% by weight of a water soluble macromonomer having a hydroxy value of at least 300, a weight average molecular weight below 6000, containing less than 10% by weight of an acid functional monomer and having a terminal unsaturated double bond; and (b) 2 to 80% of polymerized monomers selected from vinyl monomers, acrylate monomers, methacrylate monomers and mixtures thereof, form stable coating compositions that are compatible with polyisocyanate crosslinking agents and provide improved properties and appearance in automotive finishes.