Use of reducing agents in polybenzazole synthesis

Details Use of reducing agents in polybenzazole synthesis Use of reducing agents in polybenzazole synthesis

1990-10-19

1992-08-25

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528184, C08G 6926

Patent

active

051420210

ABSTRACT:
Polybenzazole polymers are conveniently synthesized in the presence of a reducing agent, such as tin (II) chloride.

REFERENCES:
patent: 3864310 (1975-02-01), Saferstein
patent: 3901883 (1975-08-01), Liechti et al.
patent: 4578435 (1986-03-01), Tsai et al.
patent: 4772678 (1988-09-01), Sybert et al.
patent: 4954501 (1990-09-01), Herter et al.
patent: 4978790 (1990-12-01), Lau et al.
11 Encyclopedia of Polymer Sci. & Eng. Polybenzothiazoles and Polybenzoxazoles, 601 (J. Wiley & Sons 1988).
Ledbetter et al., "An Integrated Laboratory Process for Preparing Rigid Rod Fibers from the Monomers," The Materials Science and Engineering of Rigid rod Polymers, 253 (Materials Research Society 1989).

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