Polyphosphazene foam process

Details Polyphosphazene foam process Polyphosphazene foam process

1984-06-11

1985-08-20

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 93, 521180, 521189, C08J 910

Patent

active

045365202

ABSTRACT:
Foamed polyphosphazene articles having consistent appearance and physical properties are made by masticating a mixture of high molecular weight linear polyphosphazene, a curing agent (e.g., sulfur), an accelerator, a blowing agent and optionally fillers, processing aids and the like until the temperature of the composition rises to a pre-determined level. Mixing is stopped and the composition is shaped, heated to pre-cure and then heated to activate the blowing agent and complete the cure.

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