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:
Aug. 24, 1999
Filed:
Nov. 27, 1996
Charles B Friedlander, Shaler Twp., Allegheny County, PA (US);
Ronald R Ambrose, Hampton Twp., Allegheny County, PA (US);
David A Diehl, Ross Twp., Allegheny County, PA (US);
Alan B Weissberg, Allegheny County, PA (US);
Carolyn A Novak, Richland Twp., Allegheny County, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
Disclosed is a radiation curable composition which includes: (a) an unsaturated ester compound, and (b) a pulverizable vinyl ether compound. The unsaturated ester compound is characterized as having a plurality of unsaturated ester groups per molecule. The pulverizable vinyl ether compound is characterized as including at least one of the following: (a) a compound having an average of greater than 1.0 reactive vinyl ether groups per molecule, and (b) a vinyl ether-containing group bonded to the unsaturated ester compound such that there is an average of at least 1.0 reactive vinyl ether group per molecule. The unsaturated ester compound, the vinyl ether compound and/or a mixture thereof is treated with a reducing agent so as to decompose destabilizing agents present therein that would initiate premature polymerization of the vinyl ether compound. Accordingly, in the stabilized radiation curable coating compositions of this invention, polymerization of the vinyl ether compound is substantially avoided until blended with the unsaturated ester compound and exposed to radiation.