Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1981-08-07
1983-01-18
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428287, 428298, B32B 1500
Patent
active
043692249
ABSTRACT:
Glass fiber reinforced plastic laminates including randomly oriented glass fibers, embedded within unsaturated polyester resins, are provided over at least one surface thereof with a gel coat, essentially free of the glass fibers. The gel coat is formed from resins which are polymerizable in the presence of ultraviolet radiation. The gel coat is at least partially cured on a transparent carrier film by exposing gel coat resins to ultraviolet radiation. Thereafter randomly oriented glass fibers and unsaturated polyester resin syrup are applied onto the gel coat to form the resulting laminate. The gel coat is selected to provide superior weathering characteristics and resistance to deterioration from ultraviolet radiation exposure, e.g., sunlight, when compared to the corresponding properties of the unsaturated polyester resin in which the randomly oriented glass fibers are embedded.
REFERENCES:
patent: 4201823 (1980-05-01), Russell
patent: 4263364 (1981-04-01), Seymour et al.
patent: 4302499 (1981-11-01), Gresch
Cordts Howard P.
Karloske Joan E.
Bell James J.
Freeman Chemical Corporation
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