Shampoo Gel Network for Conditioning and Cleansing
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Solution Overview
Problem
Existing shampoos often fail to provide long-lasting moisturization and smooth feel to dry hair while maintaining cleansing efficacy, and can leave hair feeling greasy or unmanageable.
Innovation Solution
A shampoo composition containing a combination of sodium lauryl sulfate and sodium laureth-n sulfate, a dispersed gel network phase with fatty alcohols and secondary surfactants, and an aqueous carrier, which balances solubility and rheology to provide improved wet and dry conditioning benefits without greasiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional cationic polymers are used for conditioning benefits, then conditioning effect is provided, but smooth feel in dry hair is not achieved
Solution Approach 1:
The patent combines a dispersed gel network phase containing fatty alcohol and secondary surfactant with anionic surfactants to create a composite shampoo system. This composite structure enables simultaneous cleansing and conditioning functions, where the gel network phase provides smooth feel in dry hair while the anionic surfactants maintain cleansing efficacy, resolving the contradiction between conditioning effect and smooth feel achievement.
2Stability of the object's composition
If dispersed fatty alcohol gel network phase is used to improve wet feel and dry conditioning, then conditioning benefit is achieved, but stability issues arise when surfactant crystallizes at or near room temperature
Solution Approach 1:
The patent carefully controls the concentration parameters of sodium laureth-n sulfate (limiting to less than 3.82% by weight) and adjusts the composition ratios of the gel network phase components. By optimizing these parameters, the formulation maintains stability at room temperature while preventing surfactant crystallization, thus resolving the contradiction between conditioning benefit and room temperature stability.
3Stability of the object's composition
If shampooing is performed frequently to remove soil and sebum, then cleansing effect is improved, but hair becomes wet, tangled, and unmanageable
Solution Approach 1:
The patent merges cleansing and conditioning functions into a single shampoo formulation. The dispersed gel network phase containing fatty alcohol and secondary surfactant is combined with anionic surfactants to create a unified system that provides both cleansing effect and conditioning benefit in one application, eliminating the need for separate conditioning treatments and improving hair manageability after frequent shampooing.
4Stability of the object's composition
If conditioning agents are added to shampoo to provide moisturization, then dry hair conditioning is improved, but hair feels greasy when dried
Solution Approach 1:
The patent applies local quality by incorporating a dispersed gel network phase with specific fatty alcohol and secondary surfactant components that provide conditioning benefits at the hair shaft level without depositing greasy residues. The localized action of the gel network phase on the hair structure enables moisturization while maintaining a non-greasy feel when hair is dried, resolving the contradiction between moisturization and greasy feel.
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 shampoo composition achieves long-lasting moisturization, smooth feel, and manageability for dry hair while maintaining effective cleansing, with improved lather and physical stability.
Implementation Method 1
a dispersed gel network phase comprising: (i) at least about 0.05 % of one or more fatty alcohols, by weight of the shampoo composition; (ii) at least about 0.01 % of one or more secondary surfactants, by weight of the shampoo composition; and (iii) water
Implementation Method 2
from about 5 % to about 50 % of a combination of sodium lauryl sulfate and sodium laureth-n sulfate by weight of the shampoo composition
Implementation Method 3
said shampoo composition has an enthalpy of transition from about 0 J/g to about 0.2 J/g as measured according to differential scanning calorimetry in a peak melt transition temperature range between about 18 °C to about 30 °C
Implementation Method 4
an enthalpy of transition from about 0 J/g to about 0.2 J/g as measured according to differential scanning calorimetry
Data Source
AI summary
A shampoo composition having from about 5 % to about 50 % of a combination of sodium lauryl sulfate and sodium laureth-n sulfate, less than 3.82 % of sodium laureth-n sulfate having n > 1. The shampoo composition further includes from about 0.5 % to about 3 % of a co- surfactant selected from the group consisting of amphoteric, zwitterionic, and nonionic surfactants. The shampoo composition has a dispersed gel network phase having at least 0.05 % of one or more fatty alcohols, at least 0.01 % of one or more secondary surfactants, and water. The shampoo composition further includes at least about 20 % of an aqueous carrier. The shampoo composition further has an enthalpy of transition from about 0 J/g to about 0.2 J/g as measured according to differential scanning calorimetry in a peak melt transition temperature range between about 18 °C to about 30 °C.