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:
Mar. 01, 2011
Filed:
Jul. 11, 2005
John W. Burgman, Gibsonia, PA (US);
Simion Coca, Pittsburg, PA (US);
Edward R. Coleridge, Lower Burrell, PA (US);
Heather L. Lim, North Huntingdon, PA (US);
Karen A. Morow, Verona, PA (US);
Jane N. Valenta, Pittsburgh, PA (US);
John W. Burgman, Gibsonia, PA (US);
Simion Coca, Pittsburg, PA (US);
Edward R. Coleridge, Lower Burrell, PA (US);
Heather L. Lim, North Huntingdon, PA (US);
Karen A. Morow, Verona, PA (US);
Jane N. Valenta, Pittsburgh, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
A coating composition is provided comprising (a) a polymer containing reactive functional groups; (b) a curing agent having reactive functional groups that are reactive with the functional groups in the polymer in (a); and (c) a polymeric material different from (a) and (b) having functional groups. The functional groups in components (a) and (b) are more reactive with each other than with the functional groups in component (c) such that upon curing, at least a portion of the functional groups on component (c) remain unreacted. A coating layer formed from the composition upon application to a substrate has surface regions and a bulk region, and the concentration of component (c) at one or more surface regions is greater than the concentration of component (c) in the bulk region of the coating layer. The composition can be used in multi-layer composites containing two or more coating layers.