Patent No. U.S. 6,593,423 B1

August 11, 2005

Patent No. U.S. 6,593,423 B1
PPG Industries has been granted a patent for a liquid or powder coating composition for forming a coating comprised of at least one crosslinkable film-forming material, and an adhesion promoting agent. The adhesion promoting agent is comprised of a graft copolymer that is comprised of the reaction product of a halogenated polyolefin polymer having at least one reactive functionality; reacted with a substantially saturated hydrocarbon polymer having more than one reactive functionality, at least one first reactive functionality of the hydrocarbon polymer reacted with the reactive functionality of the halogenated polyolefin such that the hydrocarbon polymer is grafted onto the polyolefin polymer to form the graft copolymer

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