	US 12,421,350 B2
	Process of preparing a poly(anthranilide), poly(anthranilide) and its use
Karolina Walker, Cologne (DE); Aurel Wolf, Wülfrath (DE); Stefan Westhues, Leverkusen (DE); and Mike Schuetze, Leverkusen (DE)
Assigned to Covestro Deutschland AG, Leverkusen (DE)
Appl. No. 18/001,888
Filed by Covestro Deutschland AG, Leverkusen (DE)
PCT Filed Jul. 5, 2021, PCT No. PCT/EP2021/068522 § 371(c)(1), (2) Date Dec. 15, 2022, PCT Pub. No. WO2022/008450, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 102020004074.8 (DE), filed on Jul. 7, 2020; and application No. 21182239 (EP), filed on Jun. 29, 2021.
Prior Publication US 2023/0235120 A1, Jul. 27, 2023
Int. Cl. C08G 69/12 (2006.01); C08G 69/04 (2006.01); C08G 69/08 (2006.01)

CPC C08G 69/12 (2013.01) [C08G 69/04 (2013.01)]

19 Claims

1. A poly(anthranilamide) of the formula

RO—[(O═C)(ortho-C₆H₄)—NH_n—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.