Core member for fabrication of shaped plastic

Details Core member for fabrication of shaped plastic Core member for fabrication of shaped plastic

1988-06-24

1990-07-03

McCamish, Marion C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428283, 428288, 428289, 428290, 4283111, 4283115, 4283177, B32B 516

Patent

active

049390201

ABSTRACT:
The invention core member is prepared by treatment of non-woven fabric with a coating composition which comprises an emulsion-form curable vinyl polymer, heat-expandable microspheres, and a thiocyanate compound, and this core member is advantageously utilized with use of liquid-form unsaturated polyester-based molding composition which contains a cobalt-containing compound as cure accelerator, wherein color development becomes available when said unsaturated polyester-based liquid composition infiltrates into voids of the core member, due to encounter of the thiocyanate compound with the cobalt-containing compound, thereby infiltration of said liquid composition is monitored by use of the color development.

REFERENCES:
patent: 3070817 (1963-01-01), Kohin et al.
patent: 4226906 (1980-10-01), Jacob
patent: 4481124 (1984-11-01), Kawashima et al.
patent: 4818583 (1989-04-01), Geel
patent: 4820575 (1989-04-01), Kolzer

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