Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1998-02-13
1999-10-05
Warzel, Mark
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524488, 524489, 525193, 525194, 525195, 525240, C08L 2326
Patent
active
059625732
ABSTRACT:
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.degree. 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.
REFERENCES:
patent: 5143978 (1992-09-01), Berta
patent: 5302454 (1994-04-01), Cecchin et al.
patent: 5360868 (1994-11-01), Mosier et al.
patent: 5486419 (1996-01-01), Clementini et al.
Montell North America Inc.
Warzel Mark
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