Flame resistant, heat insulative foamed polyphenylenes

Details Flame resistant, heat insulative foamed polyphenylenes Flame resistant, heat insulative foamed polyphenylenes

1977-12-29

1979-05-01

Willis, Jr., P. E.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252 62, 428306, 428310, 428317, 428921, 521 50, 521122, 521134, 521189, 521907, C11D 4300, C08J 900

Patent

active

041524942

ABSTRACT:
A low density, flame-resistant foamed composition is formed by heating a thorough mixture of branched polyphenylene and an inorganic fiber to above about 800.degree. F.

REFERENCES:
patent: 2361438 (1944-10-01), Turner
patent: 3124542 (1964-03-01), Kohn
patent: 3582502 (1971-06-01), Farrow et al.
patent: 3792099 (1974-02-01), Wang et al.
patent: 3798281 (1974-03-01), Wang et al.
patent: 3829518 (1974-08-01), Wennerberg
patent: 3855332 (1974-12-01), Wang
patent: 4049593 (1977-09-01), Sato et al.
patent: 4055695 (1977-10-01), Last et al.
Conroy; A. P., and Skinner; D. L., "Process Mineral Fiber-A New Filler/Reinforcement for Polypropylene," 31st Annual Technical Conference, 1976, Reinforced Plastics/Composites Institute, The Society of the Plastics Industry, Inc., pp. 1-3.

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