Method for coloring keratinous materials comprising the use of organosilicon compounds, effect pigments, further coloring compounds and film-forming polymers III

A two-agent method using organosilicon and film-forming polymer compounds creates a durable multilayer film system for long-lasting hair color, addressing odor and damage issues associated with oxidative dyes.

JP7750743B2Active Publication Date: 2025-10-07HENKEL KGAA
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Patent Information

Application Number
JP2021556660
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-03-19
Filing Date
2020-03-13
Publication Date
2025-10-07
Estimated Expiration
2040-03-13

AI Technical Summary

Technical Problem

Existing hair dyes with oxidative dye precursors cause unpleasant odors and hair damage, and there is a need for long-lasting hair color without these drawbacks, especially using effect pigments that provide high wash-off and rub-off fastness without negatively affecting hair properties.

Method used

A method involving the sequential application of two agents to keratinous materials: agent (a) containing an organosilicon compound and a first coloring compound, followed by agent (b) with a film-forming polymer and a second coloring compound, forming a multilayer film system for durable color fixation.

Benefits of technology

The method produces highly rub-resistant and wash-fast hair color with improved durability, avoiding the use of oxidative dye precursors and minimizing hair damage.

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Abstract

The present invention relates to a method for producing a method for manufacturing a semiconductor device comprising the steps of: - applying an agent (a) to keratinous materials, said agent (a) comprising: (a1) at least one organosilicon compound selected from the group consisting of silanes having one, two, or three silicon atoms; and (a2) at least one first colorant compound comprising at least one substrate flake-based pigment comprising a vacuum metallized pigment; and - applying an agent (b) to the keratinous material, said agent (b) comprising: (b1) at least one film-forming polymer; and (b2) at least one second colorant compound selected from the group consisting of pigments and / or direct dyes; Processes including The present invention relates to a method for dyeing keratinous materials, in particular human hair, comprising:
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Citation Information

Patent Citations

  • Cosmetic composition comprising organic derivatives of silicium containing at least a basic moiety as pre-treatment before a composition comprising a film-forming hydrophobic polymer, a pigment and a solvent

    EP2168633B1

  • Cosmetic composition comprising organic silicon-containing compound containing at least one kind of chemically functional basic group, hydrophobic film-forming polymer, pigment and volatile solvent

    JP2010083892A

  • Metallic luster pigments based on substrate flakes with a thickness of 1 nm to 50 nm

    JP2016536406A

  • Compositions, kits, and methods for coloring keratin fibers

    JP2020505441A

  • Hair dyeing composition comprising at least one organosilicon compound, a colorant compound and a film-forming hydrophilic polymer

    JP2021523141A