Stabilization of poly(ether ketone ketones)

Details Stabilization of poly(ether ketone ketones) Stabilization of poly(ether ketone ketones)

1989-08-28

1991-01-22

Hoke, Veronica P.

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...

524397, 525471, C08K 514

Patent

active

049871714

ABSTRACT:
Poly(ether ketone ketones), which are important engineering resins, are thermally stabilized by being contacted for at least 15 minutes above their glass transition temperature with an organic hydroperoxide containing at least 0.1 mg of active oxygen per gram, having a boiling point above about 130.degree. C., and degradable between 130.degree. C. and the contacting temperature, the hydroperoxide being made from a precursor comprising at least one benzylic or allylic hydrogen in its molecule.

REFERENCES:
patent: 3767620 (1973-10-01), Angelo et al.
patent: 4611033 (1986-09-01), Maresca

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