Multicomponent Hair Coating via Michael Addition
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Solution Overview
Problem
Existing hair dye and conditioning treatments often cause temporary scalp irritation, alter the hair structure, lead to uneven coating results, and are difficult to remove, resulting in unsatisfactory and unnatural-looking hair appearances.
Innovation Solution
A multicomponent composition comprising linear, branched, cyclic, or dendritic organic and silicone compounds with complementary functional groups, along with a base compound and optional pigment particles, that form a wash-resistant coating on keratin materials like hair, providing adjustable longevity and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If oxidative dyes are used to achieve long-lasting hair coating, then the coating durability is improved, but scalp irritation and hair structure damage occur
Solution Approach 1:
The patent divides the hair coating system into multiple independent components: (1) a dye component containing direct dyes and/or oxidative dyes, (2) a polymer component with specific functional groups, and (3) optionally a third component. This segmentation allows each component to perform its function independently while reducing the harmful effects of oxidative dyes on scalp and hair structure.
Solution Approach 2:
The invention creates a composite coating material by combining dye molecules with polymer materials that have complementary functional groups. This composite structure provides both the coloring function and the protective/binding function, reducing the need for harsh oxidative agents while maintaining coating durability.
2Ease of operation
If direct dyes are used for temporary hair coloring, then the ease of removal is improved, but the coating longevity deteriorates
Solution Approach 1:
The patent employs dynamic polymer chains with flexible backbone structures that can adapt to hair surface conditions. These polymers provide temporary anchoring through hydrogen bonding and van der Waals forces, allowing the coating to be easily removed after a desired period while maintaining sufficient longevity during use.
Solution Approach 2:
The invention changes the bonding parameters between the coating and hair by using polymers with adjustable functional group concentrations and types. This allows control over the strength of interaction - strong enough to provide lasting color during use, but weak enough to allow easy removal when needed.
3Manufacturing precision
If coating compositions are applied for extended periods to enable coating development, then the coating quality is improved, but application complexity and user inconvenience increase
Solution Approach 1:
The patent incorporates pre-functionalized polymer molecules that are ready to bond with dye components upon application. The polymers are pre-synthesized with specific functional groups positioned to optimize interaction with both dyes and hair surfaces, eliminating the need for complex in-situ reactions or extended development times.
Solution Approach 2:
The polymer component acts as an intermediary between the dye molecules and the hair surface. It facilitates the coating process by providing a ready-made structure that can simultaneously interact with dyes and hair, simplifying the overall application process while ensuring high coating quality.
4Quantity of substance
If repeated oxidative dye coatings are applied to achieve desired hair color, then the color intensity is improved, but cumulative hair structure degradation occurs
Solution Approach 1:
The patent employs polymers with sacrificial functional groups that can be consumed or degraded during the coloring process. These polymers provide the necessary binding and protection functions but are designed to be replaced in subsequent applications, preventing cumulative damage to the hair structure while maintaining color intensity.
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 minimizes damage to keratin proteins, reduces irritation, ensures uniform and natural-looking results, and allows for easy removal without altering the hair's original state, offering a pleasant user experience with predictable outcomes.
Implementation Method 1
The first and second compounds interact through their complementary functional groups by covalent, ionic, entanglement, dipolar, electronic and/or electrostatic linking to form a wash resistant coating
Implementation Method 2
The first, second and optional third components each may also further comprise pigment particles
Data Source
AI summary
The instant disclosure generally relates to a multicomponent composition for coating mammalian or synthetic keratin material and textiles, the composition comprising a first and second components and a third component. The first and second components comprise first and second compounds respectively. Any one or more of the first, second and third components may also comprise pigment microparticles. The first, second and third compounds meld together on keratin material and textiles and especially on hair to form a coating that can be formulated to provide temporary coverage or provide permanent coverage. The multicomponent composition formed and set in situ as a solid linked coating ranges from ready removability to substantially permanent lastingness.