Process for preparing spinning solutions of polyhydrazides
Abstract
Abstract CO-NH-, WITH THE PROVISO THAT AT LEAST 90 MOLE PERCENT OF SAID POLYMER UNITS ARE OF THE FORMULA -CO-(1,4-PHENYLENE)-CO-NH-NH-CO-(1,4-PHENYLENE)-CO-NH-N -O-, -CH2-, -C(-CH3)2-, -S-, -SO2-, -NH-SO2-, AND -NH-CO- N IS ZERO OR ONE AND X IS A COVALENT BOND OR A DIVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF -NH- OR -NH-NH-CO- RADICAL ARE METAL OR PARA ORIENTED TO ONE ANOTHER, R IS -(PHENYLENE)- WHEREIN THE BONDS OF EACH AND -R-(NAPHTHAL-1,5-YLENE)- -R-(NAPHTHAL-1,4-YLENE)-R-, -R-(NAPHTHAL-2,6-YLENE)-R-, -NH-NH-CO-CO-NH-NH-, -R-PHENYLENE-(X-PHENYLENE)N-R- WHEREIN R'' IS SELECTED FROM THE GROUP CONSISTING OF -CO-(1,4-PHENYLENE)-CO-R''- 1. A POLYMER SPINNING SOLUTION HAVING A VISCOSITY BETWEEN, 1,000 SOLVENT SELECTED FROM THE GROUP CONSISTING OF N,N-DIMETHYLACETAMIDE, N-METHYLPYRROLIDONE OR MIXTURES THEREOF CONTAINING AT LEAST 3.0 PERCENT BY WEIGHT OF A POLYMER HAVING AN INHERENT VISCOSITY OF AT LEAST 3.0, AND 2 TO 7 PERCENT OF WEIGHT OF LITHIUM CHLORIDE, SAID POLYMER HAVING RECURRING UNITS OF THE FORMULA
Inventors
- 👤 F Dobinson
- 👤 C Pelezo
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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