Liquid Dishwashing Composition Linear Branched Surfactant Suds Stabilization
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Solution Overview
Problem
Existing hand dishwashing compositions fail to maintain a good sudsing profile, particularly in the presence of particulate soils, leading to inadequate suds volume and stabilization, which affects cleaning efficacy and user satisfaction.
Innovation Solution
A liquid hand dishwashing composition featuring a surfactant system comprising a mixture of linear and branched anionic surfactants, where branching predominantly occurs on unalkoxylated alkyl sulfate surfactants, combined with an amine oxide co-surfactant, to enhance suds volume and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surfactant formulations are used, then the composition can provide basic cleaning function, but the sudsing profile deteriorates in the presence of particulate soils
Solution Approach 1:
The patent uses a composite surfactant system comprising multiple anionic surfactants (linear alkyl sulfate, branched alkyl sulfate, and alkyl polyglucoside sulfate) in specific proportions. This composite formulation creates synergistic effects that stabilize suds even in the presence of particulate soils, resolving the contradiction between basic cleaning function and suds stabilization reliability.
Solution Approach 2:
The patent optimizes specific parameters including the weight ratio of linear to branched alkyl sulfate (1:4 to 4:1), the average alkyl chain length (10-16 carbons), and the degree of ethoxylation (0.5-2.0 moles EO per mole alcohol). These parameter adjustments enhance suds stability while maintaining cleaning effectiveness against particulate soils.
2Quantity of substance
If surfactant concentration is increased to improve suds volume, then suds volume increases, but the composition becomes less economical and harder to dissolve
Solution Approach 1:
The patent optimizes the surfactant concentration range (1-60% by weight) and the specific composition ratios to achieve maximum suds volume at moderate concentrations. The balanced formulation ensures complete dissolution and easy manufacture while providing abundant suds, resolving the contradiction between quantity of substance and ease of manufacture.
3Quantity of substance
If high suds volume is generated initially, then suds volume is high, but suds longevity and stabilization are insufficient
Solution Approach 1:
The patent employs a composite surfactant system where linear alkyl sulfate provides initial suds volume, branched alkyl sulfate enhances suds stability and longevity, and alkyl polyglucoside sulfate contributes to both volume and persistence. This synergistic composite formulation resolves the contradiction between generating high suds volume and maintaining suds longevity.
Solution Approach 2:
The surfactant composition is designed to maintain continuous suds generation and stabilization throughout the dishwashing process. The balanced formulation ensures that suds are not only generated in high volume initially but are also sustained and stabilized over the entire duration of use, providing continuous useful action.
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 sustained suds stabilization and increased suds volume, ensuring effective cleaning and reducing the need for frequent re-dosing, as it maintains a desirable sudsing profile throughout the dishwashing process.
Implementation Method 1
the anionic surfactant is selected from a mixture of a linear anionic surfactant and a branched anionic surfactant with branching predominantly on an unalkoxylated alkyl sulfate surfactant. The composition provides good sudsing profile, in particular suds stabilization benefit in the presence of particulate soils.
Implementation Method 2
The present invention is directed to a liquid hand dishwashing cleaning composition comprising from 1% to 60%, preferably from 5% to 50%, more preferably from 8% to 45%, most preferably from 15% to 40%, by weight of the total composition of a surfactant system comprising an anionic surfactant and a co-surfactant.
Data Source
AI summary
The present invention relates to a liquid hand dishwashing cleaning composition including a surfactant system, wherein the surfactant system includes an anionic surfactant and a co-surfactant, wherein the anionic surfactant includes a mixture of a linear anionic surfactant and a branched anionic surfactant with a defined degree of branching and with the branching predominantly on an unalkoxylated alkyl sulfate surfactant. Such compositions exhibit surprising and unexpected improved sudsing profile, preferably stable suds, especially when the manual dishwashing is performed in a sink full of water with the cleaning composition diluted in it.