Hair Dye Composition Using Cationic Polymers for Texture and Color
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hair dye compositions using oxidation dyeing methods face challenges with alkaline conditions and oxidizing agents, resulting in unsatisfactory performance in terms of texture, ease of application, and color homogeneity and strength.
Innovation Solution
A composition combining oxidation dyes, basifying agents, liquid non-oxyalkylenated fatty substances, oxidizing agents, oxyethylenated fatty alcohols, and cationic polymers, which improves the texture and spreading properties while enhancing color strength and homogeneity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a substantial amount of fatty substances is used in dye compositions, then the performance qualities improve and drawbacks of alkaline agents and oxidizing agents are limited, but the working qualities after mixing with oxidizing composition remain unsatisfactory in terms of texture, ease of application and ease of spreading
Solution Approach 1:
The patent modifies the chemical composition parameters by introducing specific cationic polymers (polyquaternium-6, polyquaternium-10, polyquaternium-7) in controlled amounts (0.01-5% by weight) alongside fatty substances (5-20% by weight). This parameter adjustment resolves the contradiction by maintaining the protective effects of fatty substances while adding cationic polymers that improve texture and spreadability without compromising performance reliability.
Solution Approach 2:
The invention creates a composite dye composition system combining three key components: fatty substances (for performance quality and protecting against alkaline/oxidizing damage), cationic polymers (for improved texture and application properties), and oxidation dyes. This composite approach allows each component to address specific requirements, resolving the contradiction between performance reliability and ease of application.
2Productivity
If conventional dye compositions are used, then the dyeing process can be performed, but the dyeing qualities obtained are unsatisfactory in terms of strength and homogeneity of coloration
Solution Approach 1:
The patent adjusts composition parameters by incorporating cationic polymers (0.01-5% by weight) that interact with keratin fibers to improve dye uniformity. The specific selection of cationic polymers with different charge densities and molecular weights optimizes both color strength and homogeneity, resolving the contradiction between productivity and manufacturing precision.
Solution Approach 2:
Cationic polymers act as intermediaries between the fatty substances and the oxidation dyes, facilitating more uniform distribution of dye molecules across hair fibers. This intermediary role ensures homogeneous coloration while maintaining strong coloration, resolving the contradiction between dyeing quality and color uniformity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition provides a pleasant texture, easy application, and achieves strong, homogeneous coloration on hair fibers, addressing the limitations of prior art.
Implementation Method 1
one or more oxyethylenated fatty alcohols with a number of oxyethylene units of greater than or equal to 10, one or more oxyethylenated fatty alcohols with a number of oxyethylene units of less than 10, and one or more non-oxyethylenated fatty alcohols that are solid at room temperature
Implementation Method 2
These oxidation bases are colourless or weakly coloured compounds, which, when combined with oxidizing products, may give rise to coloured compounds via a process of oxidative condensation
Implementation Method 3
one or more cationic polymers
Data Source
AI summary
The present invention relates to a composition for dyeing keratin fibres, comprising: one or more oxidation dyes; one or more basifying agents; one or more non-oxyalkylenated fatty substances that are liquid at room temperature in a content of less than or equal to 20% by weight relative to the total weight of the composition; one or more oxidizing agents; one or more oxyethylenated fatty alcohols with a number of oxyethylene units of greater than or equal to 10; one or more oxyethylenated fatty alcohols with a number of oxyethylene units of less than 10; one or more non-oxyethylenated fatty alcohols that are solid at room temperature; and one or more cationic polymers. The present invention also relates to a process for dyeing keratin fibres using such a composition, and also to a kit for preparing the said composition.