Urethane-coupled block polymers of quinone-coupled polyphenylene

Details Urethane-coupled block polymers of quinone-coupled polyphenylene Urethane-coupled block polymers of quinone-coupled polyphenylene

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...

525453, 525460, 528 79, C08G 6548

Patent

active

042385814

ABSTRACT:
Linear, branched and/or cross-linked urethane-coupled block polymers of quinone-coupled polyphenylene oxides are described. The polymers are prepared by contacting polyfunctional isocyanates with quinone-coupled polyphenylene oxides having an average hydroxyl group per molecule value greater than zero including 2.0 or less. The polymers either alone or in combination with other polymers can be formed into useful articles of manufacture by conventional molding, extruding, etc., processing techniques.

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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