Foam Dye Composition with Nonionic Surfactant for Uniform Application
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Solution Overview
Problem
Oxidation dye compositions in foam form for human keratin fibers face challenges with poor staying power and non-uniform application, leading to inefficient dyeing results.
Innovation Solution
A composition comprising an alkaline agent, an oxidizing agent, and a nonionic surfactant of specific formula, combined with oxidation dye precursors, is used in a multi-compartment device to create a stable and long-lasting foam for uniform dye application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional foam-based oxidation dye compositions are used, then application ease is improved, but foam stability deteriorates leading to poor staying power
Solution Approach 1:
The patent changes the chemical parameters of the foam composition by incorporating specific oxidation dye precursors (para-phenylenediamine, ortho-aminophenol, or heterocyclic bases) combined with couplers and oxidizing agents in controlled concentrations. This parameter optimization allows the foam to maintain stability over time while preserving ease of application, directly resolving the contradiction between application convenience and foam stability.
Solution Approach 2:
The invention creates a composite foam system by combining multiple components: oxidation dye precursors, couplers, oxidizing agents (hydrogen peroxide), alkaline agents, and specific foam-stabilizing surfactants. This composite formulation achieves synergistic effects where the interaction between components enhances both foam stability and application properties, overcoming the limitations of conventional single-component foam systems.
2Ease of operation
If conventional foam dye compositions are used, then application simplicity is improved, but dyeing uniformity deteriorates
Solution Approach 1:
The patent optimizes chemical parameters including pH control (using alkaline agents like ammonia or alkanolamines), oxidizing agent concentration (hydrogen peroxide at controlled levels), and surfactant ratios to ensure uniform dye distribution. These parameter adjustments prevent premature oxidation and ensure even foam application, directly addressing the uniformity problem while maintaining simplicity.
Solution Approach 2:
The invention performs preliminary stabilization of the foam composition before application by pre-mixing oxidation dye precursors with couplers and foam-stabilizing agents in controlled conditions. This preliminary preparation ensures the foam maintains its structure and dyeing properties throughout application, preventing non-uniform distribution while keeping the application process simple for the end user.
3Ease of operation
If foam form is used for dye composition, then user comfort is improved, but dyeing efficiency deteriorates
Solution Approach 1:
The patent adjusts key parameters including foam density, surfactant concentration, and oxidizing agent levels to enhance dyeing efficiency within the foam matrix. By optimizing these parameters, the foam delivers adequate dye penetration and color development speed, maintaining user comfort while improving productivity metrics such as color strength and dyeing completeness.
Solution Approach 2:
The invention develops a composite foam system that incorporates penetration-enhancing surfactants, controlled-release oxidizing agents, and stabilized dye precursors. This composite structure allows the foam to maintain its comfortable, easy-to-apply characteristics while internally optimizing conditions for efficient dyeing, thus resolving the contradiction between user comfort and dyeing efficiency.
4Manufacturing precision
If foam stability is increased for better staying power, then application uniformity is improved, but foam longevity deteriorates
Solution Approach 1:
The patent carefully balances foam formulation parameters, particularly surfactant type and concentration, to achieve optimal foam stability. By selecting specific nonionic surfactants and controlling their ratios, the foam maintains enough stability for uniform application while retaining sufficient longevity to complete the dyeing process, preventing both premature collapse and excessive stability that would reduce longevity.
Solution Approach 2:
The invention creates a dynamically balanced foam system where stability and longevity are optimized for the specific application context. The foam formulation allows gradual stabilization during application for uniformity, then maintains adequate persistence for complete dye penetration, adapting its stability characteristics to the needs of each stage of the dyeing process.
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 improved dyeing properties, including strong color retention, resistance to external agents, and selectivity, with a pleasant and long-lasting foam texture.
Implementation Method 1
at least one nonionic surfactant of formula (I) R-O-(CH2-CH2-O)n-H in which R represents a linear or branched C10-C18 alkyl or alkenyl radical, n represents a number ranging from 8 to 15
Implementation Method 2
at least one oxidizing agent, such as hydrogen peroxide... oxidation bases are colourless or weakly coloured compounds which, when combined with oxidizing products, can give access to coloured entities
Data Source
AI summary
The invention relates to a composition for dyeing human keratin fibres such as the hair, in foam form, comprising at least one alkaline agent, at least one oxidizing agent, at least one oxidation dye precursor and at least one nonionic surfactant of formula (I) R-0-(CH2-CH2-0)n-H (I) in which R represents a linear or branched C10-C18 alkyl or alkenyl radical, n represents a number ranging from 10 to 15. The invention also relates to a process for dyeing human keratin fibres using this composition. A subject of the invention is also a device for dyeing keratin fibres, comprising the composition of the invention in liquid form and a foam dispenser for delivering the composition in the form of a foam.