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. 14, 2000
Filed:
Sep. 29, 1999
Christopher A Verardi, Pittsburgh, PA (US);
Lawrence D Meyers, Allison Park, PA (US);
William A Humphrey, Pittsburgh, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
A liquid coating composition has: from about 5 to 45 percent by weight of resin solids of substantially saturated polyhydroxylated polydiene polymer having terminal hydroxyl groups; from about 10 to 50 percent by weight of resin solids of crosslinking material; from about 5 to 85 percent by weight of resin solids of polymeric film forming resin; and solvent. The solvent has at least 5 percent by weight of the solvent composition consisting of water; and/or at least one organic solvent having Hansen Solubility Parameters Sp.sub.o from about 8.0 to 10.0 (cal/cm.sup.3).sup.1/2, Sp.sub.h from about 0.5 to 5.0 (cal/cm.sup.3).sup.1/2 ; and Sp.sub.p from about 0.2 to 3.0 (cal/cm.sup.3).sup.1/2 ; and/or mixtures thereof. The liquid coating composition can be solvent-based or aqueous-based and can additionally contain at least one pigment. The liquid coating composition can be coated directly onto thermoplastic and thermosetting plastic substrates, such as TPO and RIM, without the aid of flame or corona pretreatment, or the use of an adhesion promoter. A method of coating plastic substrates comprising the use of the liquid coating composition and a plastic article coated with the liquid coating composition are also disclosed.