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CN-116322619-B - Hair dyeing composition with improved durability

CN116322619BCN 116322619 BCN116322619 BCN 116322619BCN-116322619-B

Abstract

The invention relates to a dyeing composition for keratin fibres, comprising a) one or more first direct dyes selected from HC blue 18, HC Red 18 and/or HC yellow 16, and/or salts thereof, and/or mixtures thereof, b) one or more second direct dyes selected from disperse black 9, acid yellow 1, 2-amino-6-chloro-4-nitrophenol, and/or salts thereof, and/or mixtures thereof, and c) one or more alkalizing agents.

Inventors

  • B. Necker
  • S. Brexpierre
  • F. Gias
  • N.Jian

Assignees

  • 花王株式会社

Dates

Publication Date
20260512
Application Date
20210920
Priority Date
20200930

Claims (20)

  1. 1. A dyeing composition for keratin fibres, in which, Comprising: a) A first direct dye comprising HC blue 18, HC red 18 and HC yellow 16, and/or salts thereof; b) One or more second direct dyes selected from disperse black 9, acid yellow 1, and/or salts thereof, and C) One or more of the alkalizing agents, The total concentration of the first direct dye according to group a) is in the range of 0.001 to 1 wt. -% based on the total weight of the composition, The total concentration of the one or more second direct dyes according to group b) is in the range of 0.001 to 2 wt. -%, based on the total weight of the composition, The weight ratio of the dye according to group a) to the dye according to group b) is in the range of 0.049/1.1 to 5, The composition is an aqueous composition having a pH in the range of 7 to 12.
  2. 2. The composition of claim 1, wherein the composition comprises, The weight ratio of the dye according to group a) to the dye according to group b) is in the range of 0.05 to 5.
  3. 3. The composition of claim 1, wherein the composition comprises, The weight ratio of the dye according to group a) to the dye according to group b) is in the range of 0.1 to 3.
  4. 4. The composition of claim 1, wherein the composition comprises, The weight ratio of the dye according to group a) to the dye according to group b) is in the range of 0.15 to 1.5.
  5. 5. The composition according to any one of claim 1 to 4, The total concentration of the first direct dye according to group a) is in the range of 0.005 to 1 wt%, based on the total weight of the composition.
  6. 6. The composition according to any one of claim 1 to 4, The total concentration of the first direct dye according to group a) is in the range of 0.005 to 0.75 wt%, based on the total weight of the composition.
  7. 7. The composition according to any one of claim 1 to 4, The total concentration of the first direct dye according to group a) is in the range of 0.01 to 0.5 wt%, based on the total weight of the composition.
  8. 8. The composition according to any one of claim 1 to 4, The total concentration of the one or more second direct dyes according to group b) is in the range of 0.01 to 2 wt.%, calculated on the total weight of the composition.
  9. 9. The composition according to any one of claim 1 to 4, The total concentration of the one or more second direct dyes according to group b) is in the range of 0.01 to 1 wt.%, calculated on the total weight of the composition.
  10. 10. The composition according to any one of claim 1 to 4, The total concentration of the one or more second direct dyes according to group b) is in the range of 0.05 to 1 wt.%, calculated on the total weight of the composition.
  11. 11. The composition according to any one of claim 1 to 4, The one or more alkalizing agents as compounds according to group c) are selected from ammonia and/or salts thereof, and/or organic alkalizing agents and/or salts thereof.
  12. 12. The composition according to any one of claim 1 to 4, The one or more alkalizing agents as compounds according to group c) are selected from the group consisting of organic alkylamines and/or alkanolamines and/or their salts corresponding to the general formula: Wherein R 1 、R 2 and R 3 are independently selected from H, linear C1-C6 alkyl substituted or unsubstituted with one hydroxy group, or branched C3-C12 alkyl or alkanol, wherein at least one of R 1 、R 2 or R 3 is different from H.
  13. 13. The composition according to any one of claim 1 to 4, The total concentration of the compounds according to group c) is in the range of 0.1 to 40% by weight, calculated on the total weight of the composition.
  14. 14. The composition according to any one of claim 1 to 4, The total concentration of the compounds according to group c) is in the range of 0.25 to 30 wt.%, calculated on the total weight of the composition.
  15. 15. The composition according to any one of claim 1 to 4, The total concentration of the compounds according to group c) is in the range of 0.4 to 25% by weight, calculated on the total weight of the composition.
  16. 16. The composition according to any one of claim 1 to 4, The composition is an aqueous composition having a pH in the range of 7.5 to 12.
  17. 17. The composition according to any one of claim 1 to 4, The composition is an aqueous composition having a pH in the range of 7.5 to 11.
  18. 18. The composition according to any one of claim 1 to 4, The composition is an aqueous composition having a pH in the range of 8 to 10.8.
  19. 19. The composition according to any one of claim 1 to 4, The composition is an aqueous composition having a pH in the range of 8.5 to 10.8.
  20. 20. The composition according to any one of claim 1 to 4, The composition comprises one or more dye compounds different from groups a) and b) selected from oxidation dye precursors, oxidation dye couplers and/or direct dyes.

Description

Hair dyeing composition with improved durability Technical Field The present invention aims to provide a dyeing composition for keratin fibres, a dyeing process and the use of certain direct dyes. Background Direct dyes have received particular attention from the cosmetic industry over the last decade. Direct dyes are easier to apply to keratin fibres than their oxidation counterparts, but generally lack durability on keratin fibres. The applicant has developed a new direct dye (EP 1366752), supplementing the availability and colour range of existing dyes. A series of dyes developed above include HC blue 18, HC red 18 and HC yellow 16. In general, one of the technical challenges of direct dyes is their low durability on keratin fibers, which have previously been damaged by chemical treatments such as perming or bleaching. Chemical treatments alter the internal structure of the hair compared to the original hair, generally improving the hair coloring effect, but at the same time direct dyes are also easily washed away. Thus, consumers who have previously received chemical hair treatments may experience a lower durability of the direct dye, especially after multiple washes. Furthermore, although the color intensity fades gradually after multiple washes, the hair may experience additional unexpected color shifts, depending on the different color bleed rates of the individual direct dyes (bleeding rate). In daily business operations of hair salons, it is not always so easy for professionals to analyze hair damage before a customer, as some of the previous treatments may have been washed out and their effects no longer visible. When assuming healthy hair and then direct dyeing, the hairdresser and customer may surprisingly find that the persistence of the dyeing process is very low and that an undesired color shift is found after washing the hair several times. Such experience will certainly be frustrating to each party. In summary, the prior art fails to satisfactorily address the above challenges, and therefore there is a real need to develop a direct dyeing composition for keratin fibres that is effective and has good durability regardless of the history of chemical treatments. Disclosure of Invention Accordingly, a first object of the present invention is a dyeing composition for keratin fibres, preferably for human keratin fibres, more preferably for human hair, comprising: a) One or more first direct dyes selected from HC blue 18, HC red 18 and/or HC yellow 16, and/or salts thereof, and/or mixtures thereof; b) One or more second direct dyes selected from Disperse Black 9, acid Yellow 1, 2-amino-6-chloro-4-nitrophenol, and/or salts thereof, and/or mixtures thereof, and C) One or more alkalizing agents. A second object of the present invention is a two-component hair dye composition comprising a first composition as defined above and a second aqueous composition having a pH in the range of 1 to 6 and optionally comprising one or more oxidizing agents, preferably hydrogen peroxide. A third object of the present invention is a method for dyeing keratin fibres, preferably human keratin fibres, more preferably human hair, comprising the following steps: i) Providing a composition as defined above and optionally mixing it with a second aqueous composition having a pH in the range of 1 to 6 and optionally comprising an oxidizing agent, preferably hydrogen peroxide, to produce a ready-to-use composition having a pH in the range of 7 to 12; ii) applying the ready-to-use composition to keratin fibres and allowing them to stand for a period of time ranging from 1 to 60 minutes, and Iii) Optionally rinsing the keratin fibres and optionally drying the keratin fibres. A fourth object of the present invention is a method for dyeing keratin fibres, preferably human keratin fibres, more preferably human hair, comprising the following steps: x) applying an aqueous composition to the keratin fibres, the aqueous composition having a pH in the range 7 to 12 and comprising one or more compounds according to groups a) and c) as defined above; xi) allowing the composition of step x) to rest on the keratin fibres for a period of 1 to 60 minutes, optionally rinsing the keratin fibres, and optionally drying the keratin fibres; xii) applying an aqueous composition to keratin fibres, the aqueous composition having a pH in the range 3 to 12 and comprising one or more compounds of groups b) and c) as defined above, and Xiii) allowing the composition of step xii) to rest on the keratin fibres for a period of 1 to 60 minutes, optionally rinsing the keratin fibres, and optionally drying the keratin fibres. A fifth object of the present invention is the use of a composition comprising the compounds of groups b) and c) as defined above for improving the wash fastness of a composition comprising the compounds of groups a) and c) as defined above on keratin fibres, preferably human keratin fibres, more preferably human hair, even more preferabl