Hair washing composition
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Solution Overview
Problem
Existing hair cleansing compositions do not provide a delicate finish to hair both during and after cleansing, lacking in foaming quality, softness, and combability, and they also suffer from stability issues at low temperatures.
Innovation Solution
A hair cleansing composition containing internal olefin sulfonic acid with 16 carbon atoms and a specific average double bond position, combined with hydroxy group-containing compounds like monosaccharides or polyethylene glycol, to enhance foaming, softness, and combability while maintaining low-temperature stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional internal olefin sulfonates are used in hair cleansing compositions, then cleansing effect is achieved, but foaming quality and softness of hair are insufficient
Solution Approach 1:
The patent applies parameter changes by precisely controlling the double bond position (3.9-4.4) and carbon atom number (16) of the internal olefin sulfonate,以及 the mass ratio of hydroxy group-containing compound to sulfonate (0.005-0.45). These specific parameter adjustments optimize both the cleansing effect and the desired foaming quality and softness, resolving the contradiction between effective cleansing and improved hair feel.
2Reliability
If existing hair cleansing compositions are used, then cleansing function is provided, but low-temperature stability is poor
Solution Approach 1:
The patent resolves the low-temperature stability issue by changing the chemical parameters of the surfactant system - specifically using internal olefin sulfonate with 16 carbon atoms and controlled double bond position (3.9-4.4), combined with hydroxy group-containing compounds in optimized ratios. These parameter modifications enhance the composition's stability at low temperatures while preserving cleansing functionality.
3Reliability
If conventional surfactant combinations are used, then cleansing action is achieved, but hair entanglement and bundle feel occur after rinsing
Solution Approach 1:
The patent introduces hydroxy group-containing compounds as intermediary substances that mediate between the cleansing action of the internal olefin sulfonate and the hair structure. These intermediaries prevent direct harmful interactions that cause entanglement and bundle feel, while allowing the cleansing function to proceed effectively. The specific mass ratio control (0.005-0.45) ensures optimal mediation without compromising cleansing performance.
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 good foaming during cleansing, softness and flexibility after rinsing, prevents hair entanglement, and maintains stability even at low temperatures, improving overall hair care performance.
Implementation Method 1
Internal olefin sulfonates, which are known to have various numbers of carbon atoms, can achieve excellent effects as anionic surfactants
Implementation Method 2
The composition achieves good foaming during cleansing
Data Source
AI summary
A hair cleansing composition containing a specific internal olefin sulfonic acid or a salt thereof and, that when applied to hair, exhibits excellent performance from the time of cleansing to the time of rinsing and after cleansing. The hair cleansing composition contains the following components (A) and (B): (A) an internal olefin sulfonic acid having 16 carbon atoms or a salt thereof obtained by sulfonation of a raw material olefin having 16 carbon atoms and having an average double bond position of 3.9-position to 4.4-position; and (B) one or more hydroxy group-containing compounds selected from the group consisting of (b1) a monosaccharide or a sugar alcohol and (b2) polyethylene glycol having a mass average molecular weight of 500 or less, wherein a mass ratio of a content of the component (B) to a content of the component (A), (B)/(A), is 0.005 or more and 0.45 or less.