Dyeing Composition Multi-Lamella Liquid Crystal Structure
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Solution Overview
Problem
Conventional dyeing compositions for keratin fibers face challenges in mass transfer to hair, leading to reduced color formability, pungent smell, and eye-smarting due to the use of alkaline agents like ammonia, which cause hair damage and discomfort.
Innovation Solution
A dyeing composition comprising an ether type nonionic surfactant, ether type oil, and an alcohol with the same carbon number, forming a multi-lamella liquid crystal structure to enhance mass transfer and stability, while reducing pungent smell and eye-smarting by preventing evaporation of volatile compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an alkaline agent like ammonia is used to accelerate oxidation, then color formability is improved, but pungent smell and eye-smarting increase
Solution Approach 1:
The patent introduces a nonionic surfactant as an intermediary substance that forms micelles to encapsulate the alkaline agent. This mediator allows the alkaline agent to function in accelerating oxidation while preventing its direct contact with the scalp and air, thus reducing pungent smell and eye-smarting effects.
Solution Approach 2:
The patent changes the physical state and distribution parameters of the alkaline agent by incorporating it into micellar structures. This transformation allows the alkaline agent to remain active for oxidation while being contained within a protective barrier, altering its interaction with the environment and reducing harmful effects.
2Productivity
If an alkaline agent like ammonia is used to accelerate oxidation, then color formability is improved, but hair damage increases
Solution Approach 1:
The nonionic surfactant acts as a protective intermediary that delivers the alkaline agent to the hair shaft while preventing excessive penetration into the scalp and skin. The micellar structure provides a controlled release mechanism that maintains oxidation effectiveness while minimizing harmful effects on hair and scalp.
Solution Approach 2:
The patent modifies the delivery parameters of the alkaline agent through micellar encapsulation, controlling its concentration and distribution on the hair surface. This parameter change ensures sufficient oxidation activity for color formation while preventing excessive alkalinity that would cause hair damage.
3Object-generated harmful factors
If the emulsion has very high viscosity to reduce pungent smell, then evaporation is reduced, but mass transfer to hair deteriorates
Solution Approach 1:
The patent segments the formulation into distinct micellar structures that separate the alkaline agent from the bulk aqueous phase. This segmentation allows the emulsion to maintain moderate viscosity for reduced evaporation while preserving adequate mass transfer pathways through the micellar network to the hair surface.
Solution Approach 2:
The nonionic surfactant serves as a mediator that creates micellar channels within the emulsion, providing pathways for mass transfer. These micellar channels allow the formulation to maintain sufficient viscosity to reduce pungent smell evaporation while still enabling effective transport of active ingredients to the hair.
4Object-generated harmful factors
If the aqueous phase is placed in the inner phase of micelles, then pungent smell is reduced, but color formability deteriorates
Solution Approach 1:
The patent applies local quality by creating different functional zones within the micellar structure. The inner phase contains the alkaline agent for oxidation activity, while the outer phase provides a protective barrier against evaporation. This spatial differentiation allows both pungent smell reduction and color formability to be maintained simultaneously.
Solution Approach 2:
The patent transitions from a simple single-phase system to a multi-phase micellar structure, adding a spatial dimension to the formulation. This dimensional change allows the aqueous phase to be sequestered within micelles, reducing evaporation while maintaining the chemical activity needed for color formation through the micellar interior.
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 improves color formability, stability, and reduces pungent smell and eye-smarting, facilitating better adhesion to hair and maintaining excellent color retention while preventing ammonia evaporation.
Implementation Method 1
forms a multi-lamella liquid crystal structure and facilitates the mass transfer to keratin fibers such as hair
Implementation Method 2
facilitates the mass transfer to keratin fibers such as hair
Implementation Method 3
forms a stable three-dimensional lamella structure to improve the stability of composition
Implementation Method 4
preventing evaporation of volatile compounds
Implementation Method 5
the oxidative dye precursor and coupler infiltrate into hair and are coupled with each other via oxidative condensation, resulting in color formation
Implementation Method 6
the perhydroxy anions cause the oxidation of a dye and melanin decomposition, resulting in color formation and decoloration
Data Source
AI summary
The present invention relates to a dyeing composition. More particularly, the present invention provides a dyeing composition comprising an ether-based nonionic surfactant, an ether-based oil and alcohol. Preferably, the ether-based nonionic surfactant, the ether-based oil and the alcohol have the same number of carbon atoms. The dyeing composition according to the present invention comprises the ether-based nonionic surfactant, the ether-based oil and the alcohol, forms a multi-lamellar liquid crystal structure, allows for ease of material application and maintains excellent color formation, and particularly, mitigates pungent smell, eye irritation and the like.