Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1987-09-03
1989-01-24
Buffalow, Edith
Stock material or miscellaneous articles
Composite
Of polyamidoester
214 14, 351159, 350409, B32B 2700
Patent
active
048001236
ABSTRACT:
A scratch resistant coating for peroxide curable urethane elastomers comprises a radiation curable composition including at least one polyfunctional monomer having three or more acryloloxy groups per molecule, preferably five or more acryloloxy groups per molecule, and at least one N-vinyl imido group containing monomers. The coating is applied to at least one mold surface and the mold is closed for receiving the urethane elastomer. Following curing of the urethane elastomer, a coated, molded product is obtained which has improved scratch and solvent resistant properties on the surface or surfaces of the mold to which the in-mold coating was applied. The coating composition in combination with the elastomer, and the method disclosed in the present invention are especially well suited for coating plastic, optically clear lenses, i.e., those to be used in eye glasses.
REFERENCES:
patent: 4282285 (1981-08-01), Mohiuddin
patent: 4319811 (1982-03-01), Tu
patent: 4642267 (1987-02-01), Creasy et al.
patent: 4666437 (1987-05-01), Lambert
patent: 4729914 (1988-03-01), Kliment et al.
Buffalow Edith
Cooper, III John C.
Freeman Chemical Corporation
Sylke C. Thomas
Wiviott Fred
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