Method for making PBO and PBT polymers

Details Method for making PBO and PBT polymers Method for making PBO and PBT polymers

1985-06-20

1986-08-26

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528183, 528185, 528336, 528337, C08G 7322, C08G 7532

Patent

active

046084274

ABSTRACT:
An improved process for preparing polybenzobisthiazoles and polybenzobisoxazoles involves reacting diethyl, di-n-propyl, diisopropyl or diisobutyl terephthalate rather than terephthalic acid with the appropriate dihydrochloride.

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James F. Wolfe and Bock H. Loo, F. E. Arnold; RIGID-ROD POLYMERS (Macromolecules) (1981), pp. 14, 915-920.

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