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. 12, 2002
Filed:
Jan. 28, 2002
Ronald R. Ambrose, Pittsburgh, PA (US);
Anthony M. Chasser, Allison Park, PA (US);
Shengkui Hu, Glenshaw, PA (US);
John R. Schneider, Glenshaw, PA (US);
Jackie L. Smith, Gibsonia, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
Two types of aminotriazine-based crosslinking agents are provided. Crosslinking agent I includes the ungelled reaction product of (A) a reactive urethane group-containing reaction product and (B) an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The reactive urethane group-containing reaction product (A) is the reaction product of (1) a polyester polyol, and (2) a mono-isocyanate. The crosslinking agent I is essentially free of urethane NH functionality and has a glass transition temperature of at least 25° C. Crosslinking agent II includes the ungelled reaction product of (A) a reactive urethane group-containing reaction product and (B) an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The reactive urethane group-containing reaction product (A) is the reaction product of (1) a polyisocyanate and (2) a monohydric capping agent. The crosslinking agent II is essentially free of urethane N—H functionality and has a glass transition temperature of at least 10° C. Methods for preparing crosslinking agents I and II are also provided. Further provided is a curable composition of a film-forming polymer having reactive functional groups and the previously described crosslinking agent II. Also provided are powder coating compositions which each include a solid particulate mixture of a reactive group-containing polymer having a T of at least 30° C. and the previously described crosslinking agents I or II. Multilayer composite coating compositions and coated substrates are also provided.