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US 10,494,527 B2Granted
Cationic direct dyes
AssigneeBASF SE
InventorsFrank Bachmann, Christian Cremer, Beate Froehling, Bryan Patrick Murphy, Guiru Zhang, Peter Marte Torgerson
Life of this patent
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Abstract
The invention relates to cationic direct dyes of the formula I (1), wherein m and n are independently from each other 0 or 1, D is an aromatic or a cationic heteroaromatic group, which are further specified, K is an aromatic or heteroaromatic group, E1 and E2 are independently from each other ═CH— or ═N—, An is an anion and a is a number from 1 to 6 and R1 and R2 are independently from each other and further specified. The compounds show washfastness at hair-dying.
Claims7
Compounds of formula
- wherein
- D is a cationic heteroaromatic group having a
- K is an aromatic or group;
- R1 and R2 independently from each other are hydrogen;
- C1-C12alkyl;
- C1-C12alkyl, which is substituted by hydroxy;
- amino-C6-C10aryl;
- N(R6R7)—C1-C8alkyl;
- N(R6R7)—C1-C12alkyl, which is substituted by hydroxy or interrupted by —NR9—;
- C6-C10aryl;
- or
- R6, R7 and R9, independently from each other are hydrogen;
- C1-C5alkyl;
- amino-C1-C5alkyl;
- C1-C5alkylamino-C1-C5alkyl;
- or di-C1-C5alkylamino-C1-C5alkyl;
- R10 and R11 independently from each other are hydrogen;
- C1-C12alkyl;
- N(R13R14)—C1-C12alkyl;
- N(R13R14)—C1-C12alkyl which is interrupted by phenylene;
- N+(R13R14R15)—C1-C12alkyl which is interrupted by phenylene;
- R13, R14, R15 independently from each other are hydrogen;
- C1-C5alkyl;
- amino-C1-C5alkyl;
- C1-C5alkylamino-C1-C5alkyl;
- or di-C1-C5alkylamino-C1-C5alkyl;
- E1 and E2 independently from each other are ═N—;
- An is an anion
- a is a number from 1 to 3;
- m and n are 1;
- wherein for group D, at least one of the radicals R1, R2, R10, and R11 is substituted by radical comprising at least one amino group.
28 more elements
A compound selected from the group consisting of:
Dependencies are inferred from the claim text.