07-10-2021 дата публикации
Номер: US20210309860A1
Принадлежит:
The present invention relates to a compound of formula (I-0) or a salt thereof. The invention further relates to the use of such compound as a colouring agent. The invention also relates to a colouring composition comprising such compound. 116-. (canceled)19. The compound according to claim 17 , wherein Rrepresents a group of formula (II) claim 17 , in which:X is N, and{'sub': a', 'b', '1', '6', '7', '7', '1', '6', '2', '3', '2', '1', '6', '1', '6, 'Rand Rrepresent independently a hydrogen atom, a (C-C)alkyl, a cyclohexyl or a phenyl optionally substituted by at least one radical selected from the group consisting of a halogen atom, —NH(CO)Rwith Rbeing a (C-C)alkyl, —NO, —SOH, —COH, —CN, a (C-C)alkyl optionally substituted by at least one halogen atom, and a tri((C-C)alkyl)ammonium.'}20. The compound according to claim 17 , wherein Rrepresents a group of formula (II′) claim 17 , in which:—X is O, and{'sub': a', '2', '8', '8', '1', '6, 'R′ represents a radical selected from the group consisting of a hydrogen atom and —SO—R, with Rbeing a phenyl substituted by a (C-C)alkyl.'}21. The compound according to claim 17 , wherein Rrepresents a group of formula (II) claim 17 , in which:X is N, and{'sub': a', 'b', '1', '6', '1', '6', '7', '7', '1', '6', '2', '3', '2', '1', '6, 'Rand Rrepresent independently a hydrogen atom, a (C-C) alkyl, a cyclohexyl group or a phenyl group optionally substituted by at least one radical selected from the group consisting of a halogen atom, a (C-C)alkyl optionally substituted by at least one halogen atom, —NH(CO)Rwith Rbeing a (C-C)alkyl, —NO, —SOH, —COH and a tri(C-Calkyl)ammonium.'}22. The compound according to claim 17 , wherein Rand Rrepresent independently a hydrogen atom or —NH.23. The compound according to claim 17 , wherein Ris a (C-C)alkyl claim 17 , a (C-C)alkyl claim 17 , or a methyl group.24. The compound according to claim 17 , wherein Ris a hydrogen atom or —C(O)ORwith Rbeing a hydrogen atom or (C-C)alkyl.25. The compound ...
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