Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1982-01-11
1983-12-27
Derrington, James H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264250, 4284237, 525920, 525922, B29G 700
Patent
active
044229968
ABSTRACT:
A method for producing coated, molded, fiber-reinforced thermoset plastic articles having an adherent coating in heated matched metal molds. The coating composition includes a polyurethane polyacrylate which is a reaction product, substantially free of unreacted --NCO radicals, of an organic diisocyanate, a hydroxy alkyl acrylate or methacrylate and an organic diol in combination with copolymerizable alpha-, beta-ethylenically unsaturated monomer. The coating composition also contains initiators for addition polymerization and may contain fillers including inert paticulate fillers, pigments, mold release agents. The coating composition is applied in the matched metal mold after a fiber-reinforced thermoset plastic article has been shaped within the mold. The coating composition is applied by opening the mold and introducing the described coating composition, thereafter closing the mold and retaining the mold in the closed condition until the plastic article is further cured and the described coating composition is cured.
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patent: 4081578 (1978-03-01), Van Essen
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patent: 4239796 (1980-12-01), Shanaski et al.
patent: 4242415 (1980-12-01), Feltzin
patent: 4245006 (1981-01-01), Shanaski
Navin Robert F.
Prom James R.
Derrington James H.
Freeman Chemical Corporation
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