Water soluble rigid-rod polymer

Details Water soluble rigid-rod polymer Water soluble rigid-rod polymer

1993-03-12

1994-05-17

Anderson, Harold D.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525420, 525434, 528172, 528337, 528342, C08G 7318

Patent

active

053128761

ABSTRACT:
Water-soluble rigid-rod aromatic heterocyclic polymers having repeating units of the formula: ##STR1## wherein n has a value of 0.05 to 1.00, M is an alkali metal, Q is a benzobisazole of the formula ##STR2## wherein X is --S-- or --O--, and R is selected from the group consisting of: ##STR3##

REFERENCES:
patent: 4785115 (1988-11-01), Tsai et al.
patent: 4814399 (1989-03-01), Sansone et al.
patent: 4997892 (1991-03-01), Sansone et al.
patent: 5081256 (1992-01-01), Arnold et al.
patent: 5140092 (1992-08-01), Arnold et al.
patent: 5175232 (1992-12-01), Arnold et al.
Thuy D. Dang & Fred E. Arnold, Water Soluble Rigid-Rod Polymers, Polymer Preprints 33(1), Apr. 1992.

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