INDOLE/INDOLINE BASED HYBRID DYES AND INDOLE/INDOLINE BASED HYBRID DYE INTERMEDIATE PRODUCTS

WIPO Patent Application WO2002055609

A3

The invention relates to indole and indoline based hybrid dyes and indole and indoline based hybrid dye intermediate products having a structure (I): X - S - Y; wherein X represents a group which is derived from a derivative of indole or indoline as a precursor of melanin; Y represents a group which is derived from an oxidation dye based intermediate product of a coupler or developer variety, or a derivative of indole or indoline as a precursor of melanin; and S represents a structural element which is a common component of groups X and Y, a direct bond or at least one spacer group. The inventive products are particularly suitable for dyeing keratin fibres, particularly human hair. By using colouring agents with said dye, a series of problems which occur when using complex dye mixtures are avoided or significantly reduced

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HOLLENBERG DETLEF (DE)
NAUMANN FRANK (DE)
HOEFFKES HORST (DE)
ROSE DAVID (DE)

PCT/EP2002/000013

December 27, 2002

January 03, 2002

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HENKEL KGAA (DE)
HOLLENBERG DETLEF (DE)
NAUMANN FRANK (DE)
HOEFFKES HORST (DE)
ROSE DAVID (DE)

A61K8/00; C07D401/04; A61K8/18; A61K8/46; A61K8/49; A61Q1/00; A61Q1/02; A61Q5/00; A61Q5/10; C07D209/08; C09B57/00; C09B67/42; C09B69/00; D06P1/32; D06P3/08; (IPC1-7): A61K7/13

WO1999020234A1

1999-04-29

US4961754A	1990-10-09
US5785717A	1998-07-28
DE2716671A1	1978-10-19

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