Multiphase Personal Care Composition Structuring System
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Solution Overview
Problem
Existing personal care compositions face challenges in maintaining stability and lather quality while reducing surfactant levels to enhance skin conditioning agent deposition, often requiring high levels of stabilizers that can impact processing and lather characteristics.
Innovation Solution
A multiphase personal care composition with an aqueous structured surfactant phase comprising 5-16% lathering surfactants, a structuring system of non-ionic emulsifiers with HLB between 1.4 and 13, associative polymers, and an electrolyte, which synergistically builds rheological characteristics and maintains stability without compromising lather quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the level of skin conditioning agent is raised to achieve increased deposition on skin, then the deposition efficiency is improved, but the stability of the composition and lather generation are negatively impacted
Solution Approach 1:
The patent introduces a structuring system comprising a polymer and a low HLB emulsifier as intermediary components that mediate between the skin conditioning agents and the cleansing surfactants. This structuring system prevents direct emulsification of skin conditioning agents by surfactants while maintaining composition stability and lather generation, thereby resolving the contradiction between deposition efficiency and stability.
2Object-affected harmful factors
If the level of lathering surfactant is lowered to make the composition milder and reduce cost, then the mildness and cost are improved, but the stability and lather volume are negatively impacted
Solution Approach 1:
The patent changes the rheological parameters of the composition by introducing a structuring system with specific polymer and low HLB emulsifier combinations. This structuring system provides stability and lather volume enhancement that compensates for the reduced surfactant level, allowing the formulation to maintain mildness while resolving the stability and performance issues associated with lower surfactant concentrations.
3Stability of the object's composition
If high levels of stabilizers are used to maintain composition stability at lower surfactant levels, then the composition stability is improved, but the processing difficulty and lather characteristics are negatively impacted
Solution Approach 1:
The patent employs a composite structuring system combining specific polymer types with low HLB emulsifiers in optimized ratios. This composite approach provides effective stability enhancement at lower concentrations compared to using high levels of single stabilizers, thereby improving processing ease while maintaining composition stability and preserving lather characteristics.
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 stable and mild personal care products with excellent lather characteristics and enhanced skin benefits at lower surfactant levels, maintaining structure and stability while optimizing skin conditioning agent deposition.
Implementation Method 1
the structuring system comprises an associative polymer, a low HLB emulsifier and an electrolyte... which synergistically builds rheological characteristics and maintains stability
Implementation Method 2
a structuring system of non-ionic emulsifiers with HLB between 1.4 and 13... maintains stability without compromising lather quality
Implementation Method 3
a structuring system of non-ionic emulsifiers with HLB between 1.4 and 13, associative polymers, and an electrolyte
Data Source
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AI summary
The present invention relates to a multiphase personal care composition. The multiphase personal care composition comprises an aqueous structured surfactant phase, a structuring system, and a benefit phase. The aqueous structured surfactant phase comprises from about 5% to about 16%, by weight of the multiphase personal care composition, of a lathering surfactant selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric surfactants, cationic surfactants or mixtures thereof and a structuring system. The structuring system comprises a non-ionic emulsifier having an HLB of from about 1.4 to about 13; about 0.05% to about 5%, by weight of the multiphase personal care composition, of an associative polymer; and an electrolyte. The benefit phase comprises from about 5% to about 30%, by weight of the multiphase personal care composition, of hydrophobic benefit material.