Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1979-05-18
1981-01-13
Smith, Ronald H.
Stock material or miscellaneous articles
Composite
Of polyamidoester
264134, 264255, 264296, 427370, 4273935, 428482, B32B 2740
Patent
active
042450063
ABSTRACT:
A method comprises in-mold coating on a molded thermoset polyester glass fiber substrate an 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 150.degree. F. for from about 2 to 12 minutes, said in-mold coating composition comprising the reaction product of an unsaturated aliphatic fumarate polyester diol, a saturated polyester diol flexibilizer, a cross-linking aliphatic polyol having from 3 to 6 OH groups, a diisocyanate in an amount by weight sufficient to provide from about 50 to 120%, preferably from about 80 to 103%, of the stoichiometric amount of --NCO groups required to react with all of the active hydrogen atoms in the coating composition and an ethylenically unsaturated monomer sufficient to polymerize with and crosslink the unsaturated polyester in admixture with a free radical peroxide initiator, an accelerator for said peroxide initiator and a polyurethane tin catalyst.
REFERENCES:
patent: 3903343 (1975-09-01), Pfaff
patent: 3949125 (1976-04-01), Roberts
patent: 4081578 (1978-03-01), Van Essen et al.
patent: 4144305 (1979-03-01), Cottrell, Jr. et al.
Page Thurman K.
Smith Ronald H.
The General Tire & Rubber Company
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