Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1990-03-23
1991-11-19
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528183, 528190, 528339, 528344, 528348, C08G 7532
Patent
active
050667696
ABSTRACT:
There is provided a para-ordered, rigid-rod aromatic heterocyclic copolymer having repeating groups of the formula:
REFERENCES:
patent: 4835246 (1989-05-01), Tsai et al.
Polymeric Materials: Science and Engineering, vol. 60, pp. 507-511 and 512-516, ACS, 1989.
Dotrong My
Evers Robert C.
Anderson Harold D.
Bricker Charles E.
Singer Donald J.
The United States of America as represented by the Secretary of
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