Anisotropic sulfuric acid dopes of polyamide hydrazides

Details Anisotropic sulfuric acid dopes of polyamide hydrazides Anisotropic sulfuric acid dopes of polyamide hydrazides

1975-12-18

1978-01-24

Schulz, William E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 78R, C08R 536

Patent

active

040703266

ABSTRACT:
This invention relates to novel film- and fiber-forming optically anisotropic polyamide-hydrazide solutions (dopes) which are prepared in a solvent system comprising concentrated sulfuric acid or a mixture thereof with fluorosulfonic acid.

REFERENCES:
patent: 3418275 (1968-12-01), Stephens
patent: 3767756 (1973-10-01), Blades
patent: 3775361 (1973-11-01), Jensen
patent: 3819587 (1974-06-01), Kwolek
patent: 3869430 (1975-03-01), Blades
Frazer et al., Journal of Polymer Science A-2, (1964), pp. 1147-1156.

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