Heat stable phenolic composition containing aramid fibers

Details Heat stable phenolic composition containing aramid fibers Heat stable phenolic composition containing aramid fibers

1986-02-27

1988-02-16

Lilling, Herbert J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

524 35, 524454, 524494, 524496, 524508, 524509, 524511, 525109, 525133, 525139, 525141, C08L 900, C08L 4700, C08L 6104, C08L 6112

Patent

active

047256508

ABSTRACT:
A phenolic compound having improved retention of useful properties over long periods of time at elevated temperatures is presented. The novel phenolic compound, preferably a glass reinforced phenol-formaldehyde with mineral fillers has incorporated therein elastomers which primarily undergo crosslinking on oxidative aging, such as butadiene based rubbers, and/or molecular sulfur or sulfur donor components. These additives unexpectedly retard thermal degradation with time of aging and provide exceptionally good retention of weight, molded dimensions and mechanical properties.

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