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:
Feb. 21, 2006
Filed:
Apr. 19, 2002
Dennis L. Faler, Glenshaw, PA (US);
Karen A. Barkac, North Huntingdon, PA (US);
M. Frank Haley, Glenshaw, PA (US);
Deena M. Mchenry, Cranberry Township, PA (US);
Edward S. Pagac, Portersville, PA (US);
Shanti Swarup, Allison Park, PA (US);
Cathy A. Taylor, Allison Park, PA (US);
Elizabeth A. Zezinka, Cranberry Township, PA (US);
Dennis L. Faler, Glenshaw, PA (US);
Karen A. Barkac, North Huntingdon, PA (US);
M. Frank Haley, Glenshaw, PA (US);
Deena M. McHenry, Cranberry Township, PA (US);
Edward S. Pagac, Portersville, PA (US);
Shanti Swarup, Allison Park, PA (US);
Cathy A. Taylor, Allison Park, PA (US);
Elizabeth A. Zezinka, Cranberry Township, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
An aqueous polyurethane dispersion and thermosetting compositions containing them. The aqueous polyurethane dispersion includes an aqueous medium with dispersed polyurethane-acrylate particles, which include the reaction product obtained by polymerizing a pre-emulsion formed from hydrophobic polymerizable ethylenically unsaturated monomers, a crosslinking monomer, and an active hydrogen-containing polyurethane acrylate prepolymer, which is a reaction product obtained by reacting a polyol, a polymerizable, ethylenically unsaturated monomer containing at least one hydroxyl group, a compound that includes an alkyl group having at least one hydroxyl group and optionally a carboxylic acid group, and a polyisocyanate. The prepolymer includes at least 30 percent by weight of polyurethane acrylate prepolymers with at least one terminal ethylenic unsaturation at one end of the molecule, and at least one active hydrogen-containing group at the opposite end; and at least 10 percent by weight of prepolymers having at least one terminal ethylenic unsaturation at each end of the molecule.