Polyethers of tetrahalobisphenol A

Details Polyethers of tetrahalobisphenol A Polyethers of tetrahalobisphenol A

1976-01-02

1979-08-07

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...

260 37R, 260 37M, 428383, 428411, C08G 6540

Patent

active

041638344

ABSTRACT:
Polyhalogenated copolyethers containing recurring units of the formula ##STR1## WHEREIN X is halogen selected from Br and Cl, m and n are each integers of 1 to 4 and each Q is selected from --CH.sub.2 --, ##STR2## wherein not more than 75 mole % of the Q groups are ##STR3## said polyether having a weight average degree of polymerization of at least 50 and an inherent viscosity of at least 0.2.

REFERENCES:
patent: 1950516 (1934-03-01), Prutton
patent: 2057676 (1936-10-01), Graves
patent: 2058510 (1936-10-01), Rothrock
patent: 2060716 (1936-11-01), Arvin
patent: 2100377 (1937-11-01), Brubaker
patent: 2292406 (1942-08-01), Rothrock
patent: 3219628 (1965-11-01), Doedens et al.
patent: 3532670 (1970-10-01), Schnell et al.
patent: 3761449 (1973-09-01), Kaufman

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