Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1991-06-03
1992-04-21
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528186, 528193, 528337, 528342, C08G 7318, C08G 7322
Patent
active
051069407
ABSTRACT:
There are provided novel rod-like heterocyclic aromatic polymers having repeating groups of the formula: ##STR1## wherein Y is --S--, --O-- or --NR--, R is -H, an alkyl group having 1 to 4 carbon atoms or an aromatic group having 1 or 2 aromatic rings, and the bullet symbol (.cndot.) indicates hydrogen bonding.
REFERENCES:
patent: 5041522 (1991-08-01), Dang 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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