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:
Jan. 16, 2007
Filed:
May. 09, 2003
Ronald R. Ambrose, Pittsburgh, PA (US);
Thomas A. Cook, Gibsonia, PA (US);
Shengkui HU, Baden, PA (US);
Jonathan T. Martz, Glenshaw, PA (US);
Ronald R. Ambrose, Pittsburgh, PA (US);
Thomas A. Cook, Gibsonia, PA (US);
Shengkui Hu, Baden, PA (US);
Jonathan T. Martz, Glenshaw, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
Methods for preparing crosslinking agents that are the ungelled reaction product of (a) at least one aminoplast resin and (b) at least one modifying compound, wherein the crosslinking agents are essentially free of active hydrogen functional groups and have a glass transition temperature of at least 10° C. are disclosed. The methods include, inter alia, the use of vacuum and/or increased rates of inert gas introduction during reaction.