Adhesion promoter compositions for polyolefin substrates

Details Adhesion promoter compositions for polyolefin substrates Adhesion promoter compositions for polyolefin substrates

C - Chemistry, Metallurgy

08

L

117/198, 400/201

C08L 57/08 (2006.01) B05D 7/02 (2006.01) C08F 8/14 (2006.01) C08J 7/04 (2006.01) C08L 63/10 (2006.01) C09D 163/00 (2006.01) C09D 171/00 (2006.01)

Patent

CA 2020165

Disclosed is an ungelled, modified chlorinated polyolefin resin suitable for providing a highly adherent, solvent resistant film on a thermoplastic polyolefin substrate. The modified chlorinated polyolefin resin is prepared by grafting an unsaturated polycarboxylic acid and/or an unsaturated acid anhydride onto a chlorinated polyolefin resin to form an acid- and/or anhydride-modified chlorinated polyolefin resin. The resulting acid- and/or anhydride-modified chlorinated polyolefin resin is reacted with an organic monohydric alcohol to form an esterified product containing acid functionality. The resulting esterified product is reacted with a polyepoxide to form the ungelled modified chlorinated polyolefin resin. Also disclosed is a method of preparing an ungelled modified chlorinated polyolefin resin of the invention, a coating composition containing a resin of the invention, and a method of forming a hardened film from the coating composition on a thermoplastic polyolefin substrate.

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