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:
Jul. 31, 2001
Filed:
Aug. 16, 1999
Karen A. Barkac, Murrysville, PA (US);
Simion Coca, Pittsburgh, PA (US);
James R. Franks, Gibsonia, PA (US);
Kurt A. Humbert, Bethel Park, PA (US);
Paul H. Lamers, Allison Park, PA (US);
Roxalana L. Martin, Pittsburgh, PA (US);
James B. O'Dwyer, Valencia, PA (US);
Kurt G. Olson, Gibsonia, PA (US);
Daniela White, Pittsburgh, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
A thermosetting composition useful as a powder coating comprises a co-reactable solid, particulate mixture of (a) an epoxy functional polymer containing at least one of the polymer chain structures -[(M),-(G),],- or -[(G),-(M),],- wherein M is an oxirane-free residue of at least one ethylenically unsaturated monomer, G is a glycidyl-functional ethylenically unsaturated monomer, p and q each independently has a value of 0 to typically less than 100, and x has a value of at least 1 to typically less than 100, the total value of p, q and x selected such that said epoxy functional polymer has a number average molecular weight of at least 250, and (b) a co-reactant having functional groups reactive with the epoxy groups of (a), e.g., dodecanedioic acid. The epoxy functional polymer is prepared by atom transfer radical polymerization and a polydispersity index of less than 2.5.