Process for preparing static dissipative linear segmented polyur

Details Process for preparing static dissipative linear segmented polyur Process for preparing static dissipative linear segmented polyur

1988-11-02

1990-07-03

Jacobs, Lewis T.

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...

524746, 524912, C08G 1814

Patent

active

049392042

ABSTRACT:
This invention is an improvement in a process for preparing an static dissipative phase-segregated polyurethane polymer wherein a polyfunctional polyether and a chain extender are reacted with an organic polyisocyanate in the presence of about 500 to 10,000 parts per million metal tetraorganoboron salt or fluorinated alkylsulfonate salt, based on the weight of the polyurethane. The improvement comprises dissolving said salt in all or a portion of said chain extender prior to contacting said chain extender with said polyfunctional polyether and said polyisocyanate.
This process provides a phase-segregated polyurethane having excellent static dissipative properties.

REFERENCES:
patent: 4532316 (1985-07-01), Henn
patent: 4617325 (1986-10-01), Knobel et al.
patent: 4806571 (1989-02-01), Knobel et al.

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