Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1990-03-23
1991-08-13
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528193, 528194, 528208, 528210, C08G 7532
Patent
active
050397788
ABSTRACT:
There are provided novel rod-like heterocyclic aromatic copolymers having repeating groups of the formula: ##STR1## wherein n has a value of 0.01 to 0.50, wherein Ar is a para-oriented aromatic group and Q is an aromatic heterocyclic group of the formula: ##STR2## wherein Y is --S--, --O-- or --NR--, wherein R is selected from the group consisting of --H, alkyl having 1 to 4 carbon atoms, and aromatic having 1 or 2 aromatic rings.
REFERENCES:
patent: 4835246 (1989-05-01), Tsai et al.
Arnold Fred E.
Chuah Hoe H.
Dang Thuy D.
Tan Loon S.
Anderson Harold D.
Bricker Charles E.
Singer Donald J.
The United States of America as represented by the Secretary of
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