Preparation of cyanoaryl ether copolymer

Details Preparation of cyanoaryl ether copolymer Preparation of cyanoaryl ether copolymer

1986-02-10

1987-10-27

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528128, 528171, 528173, 528174, 528206, 528208, 528210, C08G 6540

Patent

active

047031042

ABSTRACT:
There are disclosed a novel copolymer comprising having recurring unit represented by the formula: ##STR1## wherein Y represents a phenylene group or a naphthylene group, with a recurring number of k and a recurring unit represented by the formula: ##STR2## wherein Ar represents a divalent aryl group, with a recurring number of l, a value of k/(k+l) is 0.5 to 0.97 and having a reduced viscosity [.eta..sub.sp/c ] of 0.3 dl/g or higher as measured in p-chlorophenol solution at a concentration of 0.2 g/dl at 60.degree. C., and a process for producing the novel copolymer comprising the steps of:

REFERENCES:
patent: 3730946 (1973-05-01), Heath et al.

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