Ultraviolet-resistant noise-reducing member and method of making

Details Ultraviolet-resistant noise-reducing member and method of making Ultraviolet-resistant noise-reducing member and method of making

1987-12-14

1989-03-14

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 89, 521 90, 521 92, 521154, C08J 900

Patent

active

048124850

ABSTRACT:
A noise-reducing foam member for prolonged exposure to ultraviolet radiation without degradation consists essentially of a major proportion of a room-temperature silicone rubber foaming material and minor proportions of a room-temperature foaming curing agent and at least two and preferably three ultraviolet stabilizing materials selected from the group consisting of carbon black, cerium oxide, 2(2'-hydroxy-3',5'-di-tert-amylphenyl) benzotriazole and zinc oxide.
The foam member is made by mixing together suitable quantities of the silicone rubber foaming material, the ultraviolet stabilizing materials and the curing agent. The mixture is then cured to provide the foam member.

REFERENCES:
patent: 2942099 (1960-06-01), Goldstein
patent: 3592112 (1971-07-01), Frey
patent: 3923705 (1975-12-01), Smith
patent: 3970456 (1976-07-01), Branton
patent: 4189545 (1980-02-01), Modic
patent: 4418157 (1983-11-01), Modic
patent: 4562120 (1985-12-01), Axelrod et al.

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