Dye Composition Using Associative Polymer for Keratin Fiber Coloration
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Solution Overview
Problem
Current dye compositions for keratin fibers often result in less favorable kinetics, reduced color intensity, and poor homogeneity, leading to suboptimal dyeing results.
Innovation Solution
A dye composition comprising at least one fatty alcohol, one fatty acid ester, one surfactant (non-ionic or anionic), and one non-ionic associative polymer, with a water content of 55% or higher, along with an optional oxidizing composition, formulated to enhance color strength, homogeneity, and cosmetic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If large amounts of starting materials (fatty substances, surfactants, polymers) are used in dye compositions, then spreading properties and texture are improved, but dyeing effectiveness deteriorates due to less favorable kinetics and reduced color intensity
Solution Approach 1:
The patent changes the chemical parameters of the starting materials by specifying precise composition ratios: fatty substances (1-10% w/w), surfactants (1-5% w/w), and polymers (0.1-3% w/w). This parameter optimization reduces the total amount of starting materials while maintaining spreading properties and improving dyeing effectiveness through enhanced color intensity and homogeneity.
Solution Approach 2:
The patent creates a composite dye composition system that integrates multiple components (dye precursors, oxidizing agents, fatty substances, surfactants, polymers) in specific proportions. This composite approach ensures synergistic effects where each component contributes to both spreading properties and dyeing effectiveness, resolving the contradiction between ease of operation and productivity.
2Ease of operation
If large amounts of starting materials are used in dye compositions, then texture and handling are improved, but color homogeneity deteriorates
Solution Approach 1:
The patent optimizes the concentration parameters of starting materials to achieve optimal balance between texture and color homogeneity. By limiting fatty substances to 1-10% w/w and polymers to 0.1-3% w/w, the composition maintains sufficient texture for easy application while preventing excessive viscosity that would compromise color uniformity across fibers.
Solution Approach 2:
The patent introduces oxidizing agents as intermediary substances that facilitate uniform color development. These oxidizing agents act as mediators between the dye precursors and the keratin fibers, ensuring homogeneous coloration even when the composition contains optimized but limited amounts of starting materials for texture.
3Ease of operation
If the dye composition is made thinner to improve application, then ease of application is improved, but color intensity deteriorates
Solution Approach 1:
The patent changes the viscosity parameter of the dye composition by optimizing the concentration of polymers (0.1-3% w/w) and fatty substances (1-10% w/w). This parameter adjustment achieves the right balance where the composition remains sufficiently thin for easy application while maintaining enough substance content to deliver high color intensity upon fixation.
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 achieves stronger, more homogeneous coloration while maintaining ease of application and removal, and providing good cosmetic benefits to the treated fibers.
Implementation Method 1
at least one surfactant chosen from non-ionic surfactants and anionic surfactants
Implementation Method 2
When they are placed in the presence of an oxidizing agent, these compounds produce, by means of a process of oxidative condensation that takes place actually inside the fiber, colored substances which remain trapped in the fiber
Data Source
AI summary
The present disclosure relates to a dye composition comprising at least one dye, at least one fatty alcohol, at least one fatty acid ester, at least one surfactant chosen from non-ionic surfactants and anionic surfactants and at least one non-ionic associative polymer, wherein water is present in the dye composition in an amount greater than or equal to 55% by weight. The present disclosure further relates to a process for dyeing keratin fibers, including human keratin fibers, using such a composition and also to a multi-compartment kit separately comprising the dye composition and an oxidizing composition.