Taurate Cleansing Bar Composition for Conventional Soap Processing
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Solution Overview
Problem
Conventional soap bars are inefficient and costly to produce using alternative surfactants like acyl isethionates, and there is a need for sustainable, high-performance syndet bars that can be manufactured using conventional soap-making techniques and equipment, with a high percentage renewable carbon index.
Innovation Solution
A solid cleansing composition comprising at least 35 wt% acyl taurate surfactants and 15 wt% fatty acids, produced through a direct amidation reaction, allowing for efficient manufacturing without significant fatty acid soap components and achieving a high renewable carbon index.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional fatty acid soap is used to manufacture soap bars, then the manufacturing process is efficient and low-cost, but the soap is drying to the skin and consumers seek milder alternatives
Solution Approach 1:
The patent combines conventional fatty acid soap with alternative mild surfactants (acyl isethionates, acyl alkyl taurates, or amino acid surfactants) in a composite bar formulation. This merging allows the benefits of both conventional soap (cost-effectiveness, lather) and mild surfactants (skin gentleness) to coexist, resolving the contradiction between manufacturing efficiency and skin friendliness.
Solution Approach 2:
The patent modifies the surfactant composition parameters by incorporating specific ratios of mild surfactants (acyl isethionates, acyl alkyl taurates, or amino acid surfactants) alongside fatty acid soap. This parameter change in composition maintains manufacturability while improving skin compatibility, allowing the soap to remain effective but less drying.
2Object-affected harmful factors
If syndet bars comprising alternative mild surfactants are produced, then skin mildness is improved, but manufacturing cost increases due to expensive machinery and high energy inputs
Solution Approach 1:
The patent makes conventional soap-making equipment and processes universal by demonstrating they can effectively manufacture bars containing alternative mild surfactants. The existing infrastructure (kettles, mixers, molding equipment) can handle both conventional and alternative surfactant formulations, eliminating the need for expensive specialized machinery while maintaining skin mildness benefits.
Solution Approach 2:
The patent employs cost-effective, readily available mild surfactants (acyl isethionates, acyl alkyl taurates, amino acid surfactants) that can be produced through conventional processes. These surfactants serve as economical alternatives to expensive specialized equipment, providing skin mildness at lower manufacturing cost through efficient use of existing resources.
3Object-affected harmful factors
If acyl isethionates are used in syndet bars, then mildness and lather are improved, but the cost increases significantly compared to fatty acid soap
Solution Approach 1:
The patent creates a composite surfactant system combining fatty acid soap with acyl isethionates, acyl alkyl taurates, or amino acid surfactants in specific ratios. This composite approach allows the expensive mild surfactant to be used in smaller proportions while maintaining skin mildness and lather quality, reducing overall cost compared to using only high-cost surfactants.
Solution Approach 2:
The patent applies partial action by incorporating mild surfactants (acyl isethionates, acyl alkyl taurates, or amino acid surfactants) in controlled, optimized quantities rather than using them exclusively. This partial incorporation provides sufficient skin mildness and lather improvement while minimizing the high cost associated with large quantities of expensive surfactants.
4Stability of the object's composition
If commercially available sodium acyl isethionate surfactants are used, then acceptable hardness and solubility are achieved, but the percentage renewable carbon index is limited to 86%
Solution Approach 1:
The patent changes the chemical composition parameters by substituting conventional acyl isethionates with acyl alkyl taurates or amino acid surfactants that have higher percentage renewable carbon indices. These alternative surfactants maintain acceptable hardness and solubility properties while improving the renewable carbon content, achieving both functional performance and enhanced sustainability.
Solution Approach 2:
The patent develops a composite surfactant formulation combining fatty acid soap with acyl alkyl taurates or amino acid surfactants that have higher renewable carbon indices. This composite approach maintains the necessary physical properties (hardness, solubility) while increasing the overall percentage renewable carbon index of the cleansing bar, achieving both functional requirements and sustainability goals.
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 provides desirable properties such as hardness, foaming, and wear, while being sustainable and cost-effective, using conventional soap-making processes and equipment, with a high percentage renewable carbon index.
Implementation Method 1
produced through a direct amidation reaction
Data Source
AI summary
A solid cleansing composition including(a) at least 35 wt % of one or more taurate surfactants of formula (I):in which X is hydrogen, a metal ion or an optionally substituted ammonium ion; and R1 is an optionally substituted C3-C35 hydrocarbyl group; and(b) at least 15 wt % of one or more fatty acids.The solid cleansing composition may be particularly useful as a personal care bar. A method of forming the solid cleansing composition and uses of the solid cleansing composition are also disclosed.