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US 12,421,350 B2Granted
Process of preparing a poly(anthranilide), poly(anthranilide) and its use
AssigneeCovestro Deutschland AG
InventorsKarolina Walker, Aurel Wolf, Stefan Westhues, Mike Schuetze
Life of this patent
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Abstract
The present invention relates to a process of preparing a poly(anthranilamide) comprising the steps: (A) providing an anthranilate, and (B) reacting the anthranilate by polycondensation and separation of the alcohol on which the anthranilate is based in the presence of a catalyst to poly(anthranilamide), the poly(anthranilamides) obtained in this way and their use in the production of fibers of composite materials.
Claims19
A poly(anthranilamide) of the formula
- RO—[(O═C)(ortho-C6H4)—NHn—H
- in which R is an aliphatic organic radical and n denotes the number of repeat units and is in the range from 20 to 2500.
Dependencies are inferred from the claim text.