C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 51/06 (2006.01) C08F 255/00 (2006.01) C08F 255/02 (2006.01) C08G 81/02 (2006.01) C08L 23/10 (2006.01) C08L 23/16 (2006.01) C09D 151/06 (2006.01)
Patent
CA 2260751
Directly paintable polymer compositions contain (1) a thermoplastic olefin, (2) a propylene homopolymer or propylene copolymer with ethylene or a 4-8 C alpha- olefin, grafted with an anhydride of an aliphatic .alpha.,.beta.-unsaturated dicarboxylic acid, (3) an oxidized polyethylene wax having a melting point of less than 116°C and an acid number of less than 40, (4) a functionalized polymer that reacts with the anhydride groups of the grafted polymers, and, optionally, (5) a polyolefin rubber grafted with an anhydride of an aliphatic .alpha.,.beta.-unsaturated dicarboxylic acid, and (6) an ethylene polymer grafted with an anhydride of an aliphatic .alpha.,.beta.-unsaturated dicarboxylic acid. The compositions are particularly useful for making injection molded parts such as automobile bumpers, and exhibit excellent paint adhesion and durability.
Fetherstonhaugh & Co.
Montell North America Inc.
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