In-mold coating of structural foams

Details In-mold coating of structural foams In-mold coating of structural foams

B - Operations, Transporting

29

C

18/654

B29C 37/00 (2006.01) C08J 9/36 (2006.01)

Patent

CA 1144321

ABSTRACT OF THE DISCLOSURE A method is disclosed comprising in-mold coating a struc- tural foam part made from a thermoplastic aromatic polycarbon- ate resin or a thermoplastic ABS polymer resin with a thermo- setting in-mold coating composition at a pressure of from about 25 to 50 p.s.i. and at a temperature not in excess of about 200°F. for from about 1 to 10 minutes, preferably for from about 1 to 3 minutes, to provide hard, smooth and adherent coatings, said thermosetting in-mold coating com- position comprising an ethylenically unsaturated polyester resin and an ethylenically unsaturated monomer(s) catalyzed with an organic perioxide initiator including an accelerator for the initiator.

343462

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