Cosmetic Composition with Organic Silicon and Cationic Polymer
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Solution Overview
Problem
Conventional shampoo compositions based on anionic surfactants cause damage to hair due to their aggressive nature, leading to instability and unsatisfactory styling effects, while compositions with organic silicon compounds like 3-aminopropyltriethoxysilane suffer from stability issues during storage and pH incompatibility with anionic surfactants.
Innovation Solution
A cosmetic composition combining organic silicon compounds, anionic surfactants, and cationic polymers, along with additional amphoteric or nonionic surfactants, which maintains stability over time and provides effective conditioning and lasting styling effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional anionic surfactant-based shampoo compositions are used, then good washing power is achieved, but hair fiber damage occurs due to aggressive cleaning action
Solution Approach 1:
The patent combines anionic surfactants (for washing power) with cationic polymers and organic silicon compounds (for conditioning and hair protection) in a single shampoo composition. This merging allows the composition to simultaneously achieve good washing power while reducing hair fiber damage through the protective effects of the conditioning agents.
Solution Approach 2:
The patent creates a composite surfactant system combining multiple types of surfactants (anionic, cationic, amphoteric) with organic silicon compounds and cationic polymers. This composite approach enables the composition to balance cleaning effectiveness with hair protection, as the different components work synergistically to reduce damage while maintaining washing power.
2Ease of operation
If organic silicon compounds like 3-aminopropyltriethoxysilane are added to improve conditioning and styling effects, then satisfactory soft feel and lasting styling effects are achieved, but stability issues occur during storage
Solution Approach 1:
The patent introduces cationic polymers as intermediary substances that mediate between the organic silicon compounds and anionic surfactants. The cationic polymers act as bridges, enabling compatible interactions between the positively charged polymer and negatively charged surfactants, thereby preventing instability during storage while maintaining the conditioning benefits of the organic silicon compounds.
Solution Approach 2:
The patent modifies the chemical parameters of the formulation by adjusting pH levels and using specific combinations of cationic polymers with organic silicon compounds. These parameter changes create stable complexes that prevent degradation over time while preserving the conditioning and styling effects.
3Ease of operation
If organic silicon compounds are used to provide styling effects, then mass, body, and curl control are improved, but pH incompatibility with anionic surfactants causes stability problems
Solution Approach 1:
The cationic polymers serve as intermediaries that facilitate compatible interactions between organic silicon compounds and anionic surfactants despite pH differences. The positive charge on the cationic polymers allows them to bridge the gap between negatively charged anionic surfactants and the organic silicon compounds, maintaining stability across different pH conditions while preserving styling effects.
Solution Approach 2:
The patent creates a composite system where cationic polymers, organic silicon compounds, and anionic surfactants work together as a unified formulation. This composite approach allows the composition to maintain pH compatibility and stability while delivering effective styling results, as the different components compensate for each other's pH limitations.
4Ease of operation
If multiple conditioning agents are added to improve cosmetic properties, then hair softness and suppleness are enhanced, but composition complexity increases
Solution Approach 1:
The patent merges multiple conditioning functions into a single integrated formulation combining anionic surfactants, cationic polymers, and organic silicon compounds. This merging approach provides enhanced cosmetic properties (softness, suppleness, styling) while avoiding the need for separate conditioning products, thus managing complexity through functional integration rather than additive complexity.
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 ensures hair is conditioned with a soft feel, improved disentangling, and long-lasting styling benefits, including mass, body, and curl control, while maintaining stability in various storage conditions.
Implementation Method 1
one or more hydroxyl groups or hydrolysable per molecule
Implementation Method 2
organic silicon compounds... comprising one or more basic chemical functions and one or more hydroxyl groups or hydrolysable per molecule
Implementation Method 3
one or more cationic polymers... one or more anionic surfactants
Data Source
AI summary
The present invention relates in particular to a cosmetic composition for washing and conditioning keratin fibers, in particular human keratin fibers such as hair, comprising in a cosmetically acceptable medium: (i) one or more silicon organic compounds selected from silanes comprising one silicon atom and siloxanes comprising two or three silicon atoms, said silicon organic compounds further comprising one or more basic chemical functions and one or more hydroxyl or hydrolyzable groups per molecule; (ii) one or more anionic surfactants, and (iii) one or more cationic polymers.