Rigid-rod benzobisazole copolymer containing cyclic phosphate es

Details Rigid-rod benzobisazole copolymer containing cyclic phosphate es Rigid-rod benzobisazole copolymer containing cyclic phosphate es

1992-05-22

1992-12-29

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525434, 525435, 528167, 528183, 528185, 528186, 528337, 528342, C08G 7300

Patent

active

051752328

ABSTRACT:
Rigid-rod aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein n has a value of about 0.10 to 0.99, m is 1.0-n, Ar is a para-ordered divalent aromatic moiety, as defined hereinafter, and wherein Ba is a benzobisazole moiety of the formula: ##STR2## wherein X is --O--, --S-- or --NH. Ar can be any para-ordered divalent moiety such as, for example, 1,4-phenylene, 4,4'-biphenylene, 4,4"-terphenylene, and the like, as well as substituted divalent moieties, such as, for example: ##STR3## wherein R is Q or an alkyl group having 1 to 4 carbon atoms, wherein Q is ##STR4## wherein Z is --O-- or --S--; ##STR5## wherein R is as defined above, or ##STR6## wherein R.sup.1 and R.sup.3 are --H or -phenyl, R.sup.2 is --H or ##STR7## wherein Q is as defined above, and R.sup.4 is R.sup.2 or ##STR8##

REFERENCES:
patent: 4892921 (1990-01-01), Tsai et al.
patent: 4900806 (1990-02-01), Arnold et al.
patent: 4960853 (1990-10-01), Arnold et al.
patent: 4960859 (1990-10-01), Arnold et al.
patent: 5021570 (1991-06-01), Lysenko
patent: 5081256 (1992-01-01), Arnold et al.
Chen, J. P. and Arnold, F. E., "Rigid-Rod Benzobisazole Polymers Containing Cyclic Phosphate Ester Groups", Polymer Preprints, 32 (199), pp. 209-210, Jun. 1991.

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