Crystalline aromatic polyketone copolymer produced from 4-mercap

Details Crystalline aromatic polyketone copolymer produced from 4-mercap Crystalline aromatic polyketone copolymer produced from 4-mercap

1987-03-10

1989-02-14

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528128, C08G 7504, C08G 7523

Patent

active

048047350

ABSTRACT:
A copolymer which can be employed for various molded articles, particularly for uses which require a high nonflammability, which copolymer is a crystalline aromatic polyketone type copolymer which has an intrinsic viscosity of not less than 0.40 and has a linear polymer structure comprising structural units (A) represented by the formula (A) ##STR1## structural units (B) represented by the formula (B) ##STR2## and structural units (C) represented by the formula (C.sub.1) ##STR3## or by the formula (C.sub.2) ##STR4## the molar ratio of said units (B) to said units (C) being in the range from 30:70 to 99:1, and the unit (A) and either the unit (B) or the unit (C) being linked alternately; and a process producing the same.

REFERENCES:
patent: 3809682 (1974-05-01), Studinka

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