Phosphonitrilic polymers with curability by sulfur accelerated c

Details Phosphonitrilic polymers with curability by sulfur accelerated c Phosphonitrilic polymers with curability by sulfur accelerated c

1989-11-20

1991-06-11

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 86, 521 88, 521 89, 521 92, 521 93, 521134, 521189, 528399, C08J 900

Patent

active

050232789

ABSTRACT:
An improved process for producing sulfur-cured polyphosphazene foams is disclosed. The process comprises foaming more than one storable, stable accelerator base composition comprising the sulfur curing agent, a phosphazene oil and a polyphosphazene. A masterbatch of the same or similar polyphosphazene is made by mixing together a hydrated filler, processing aids and phosphazene oil. The matchbatch and accelerator base composition are then blended and foamed and cured.

REFERENCES:
patent: 4107108 (1878-08-01), Dieck et al.
patent: 4113670 (1978-09-01), Dieck et al.
patent: 4535095 (1985-08-01), Mueller
patent: 4536520 (1985-08-01), Mueller
patent: 4602048 (1986-07-01), Penton et al.

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