Polyamides and their anisotropic dopes
Abstract
Abstract NOVEL FILM- AND FIBER-FORMING AROMATIC POLYAMIDES AND COPOLYAMIDES CONSISTING ESSENTIALLY OF REPEATING UNITS OF THE FORMULA -NH-R1-NH-CO-R2-CO- WHEREIN R1 REPRESENTS AT LEAST ONE RADICAL SELECTED FROM THE GROUP OF 1,4-PHENYLENE; METHYL-, CHLORO-, BROMO- AND FLUOR-1,4-PHENYLENE; 4,4'' - BIPHENYLENE; 3,3''-DICHLORO4,4''-BIPHENYLENE; 3,3''-DIMETHOXY -4,4'' - BIPHENYLENE; 3,3''DIMETHYL - 4,4'' - -BIPHENYLENE; TRANS-1,4-CYCLOHEXYLENE; 4,4'' - CARBONAMIDOBIPHENYLENE; AND 1,4-PHENYLENE BIS(IMINOCARBONYL)-1,4-PHENYLENE; AND R2 REPRESENTS 2,5PYRIDYLENE OR 4-METHYL-2,5-PYRIDYLENE RADICALS, OR WHICH 0 TO ABOUT 50 MOLE PERCENT MAY BE REPLACED BY RADICALS SELECTED FROM THE GROUP OF 4,4-PHENYLENE, CHLORO-4PHENYLENE, AND 4,4''-BIPHENYLENE. THESE POLYMERS FORM USEFUL ANTISOTROPIC SPINNING DOPES WITH CONCENTRATED SULFURIC ACID.
Inventors
- 👤 L Gulrich
- 👤 P Morgan
Bibliographic Details
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