Amide-imide heat-resistant fiber
First Claim
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1. Fiber having tenacity of at least 1.5 grams per denier produced by solution spinning a solution comprising polar organic solvent and dissolved amide-imide resin, said resin comprising the polymeric condensation product of trimellitic anhydride and toluene diisocyanate or the polymeric condensation product of trimellitic anhydride chloride and toluene diamine.
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Abstract
Solution spun fiber obtained from resin comprising an amide-imide polymer having repeating units of the following general formula: ##STR1## wherein the fiber has tenacity of at least about 1.5 grams per denier, and elongation of at least about 10%.
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3 Claims
- 1. Fiber having tenacity of at least 1.5 grams per denier produced by solution spinning a solution comprising polar organic solvent and dissolved amide-imide resin, said resin comprising the polymeric condensation product of trimellitic anhydride and toluene diisocyanate or the polymeric condensation product of trimellitic anhydride chloride and toluene diamine.
Specification