Process of forming urethane-coupled polymers of quinone-coupled

Details Process of forming urethane-coupled polymers of quinone-coupled Process of forming urethane-coupled polymers of quinone-coupled

1978-05-19

1980-12-09

Lee, Lester L.

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

Synthetic resins

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

528 79, C08G 6548

Patent

active

042385806

ABSTRACT:
A process of forming linear, branched and/or cross-linked urethane-coupled polymers of quinone-coupled polyphenylene oxides is described which comprises contacting in a high fluid shear stress reaction medium a polyfunctional isocyanate with a quinone-coupled polyphenylene oxide having an average hydroxyl group per molecule value greater than zero including 2.0 or less, and optionally, additionally, a polyphenylene oxide having an average hydroxyl group per molecule value greater than zero including 1.0 or less.

REFERENCES:
patent: 3375228 (1968-03-01), Holoch et al.
patent: 3573254 (1971-03-01), Factor
patent: 3736291 (1973-05-01), Vogel
patent: 3784575 (1974-01-01), Rutledge
patent: 3970640 (1976-07-01), Yonemitsu et al.
patent: 3987068 (1976-10-01), Reilly

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