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, 1990
Filed:
Apr. 03, 1989
Jonathan T Martz, Glenshaw, PA (US);
Thomas W Kelly, Bloomington, IL (US);
Rostyslaw Dowbenko, Monroeville, PA (US);
James A Meier, St. Saulve, FR;
Anthony C Palermo, Gibsonia, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
Disclosed is a liquid coating composition, useful for making a chip resistant coating, comprising a binder of: a first and a second urethane resin each containing terminal, reactive ethylenically unsaturated groups. Each urethane resin is prepared by reacting components comprising (A) an isocyanate-terminated prepolymer which is the product of reacting an organic polyisocyanate with an organic polyol with (B) an isocyanate reactive group-containing unsaturated monomer selected from hydroxyalkyl acrylates, hydroxyalkyl methacrylates and hydroxyalkyl acrylamides. The organic polyol for the first urethane resin has a hydroxyl functionality of 3 or more; the organic polyol for the second urethane resin has a hydroxyl functionality of less than three; and the average functionality of the polyols utilized for the first and second urethane resins is less than three. Also disclosed is a method of making a cured chip resistant, coating.