Flame retardant high temperature polyphthalamides having improve

Details Flame retardant high temperature polyphthalamides having improve Flame retardant high temperature polyphthalamides having improve

1997-03-26

1998-06-30

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524417, C08K 310

Patent

active

057735000

ABSTRACT:
The thermal stability of flame retardant, high temperature polyamides containing an organohalogen flame-retardant such as brominated polystyrene in combination with an antimony compound such as sodium antimonate during molding and similar melt fabrication operations is markedly improved when further combined with a minor amount of calcium oxide. The thermal stability of these compositions are much improved over analogous flame retardant polyamides formulated with magnesium oxide and/or zinc oxide.

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