Method for manufacturing polyoxazole and polythiazole precursors

Details Method for manufacturing polyoxazole and polythiazole precursors Method for manufacturing polyoxazole and polythiazole precursors

1985-03-27

1986-11-11

Lee, Lester L.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Forming nonplanar surface

430 9, 430 18, 430190, 430192, 430270, 430280, 430281, 430253, 430254, 525430, 528182, 528185, 528337, 528352, 528353, C08G 6540, G03C 500

Patent

active

046222855

ABSTRACT:
Oligomeric and/or polymeric polyoxazole and polythiazole precursors can be prepared with high purity, i.e., especially without chloride, in a simple manner if an aromatic and/or heterocyclic dihydroxy, dialkoxy or diaryloxydiamino compound or a corresponding dithio compound is reacted with a dicarboxylic acid in the presence of a carbodiimide. The precursors prepared in this manner are suitable, for instance, for the manufacture of protection and insulating layers.

REFERENCES:
patent: 4332883 (1982-06-01), Ahne et al.
patent: 4339521 (1982-07-01), Ahne et al.
patent: 4398009 (1983-08-01), Ahne et al.
patent: 4423202 (1983-12-01), Choe

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