Hand Dishwashing Composition for Cold-Water Dilution and Low 1,4-Dioxane
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Solution Overview
Problem
Existing liquid hand dishwashing detergents face challenges in achieving environmental sustainability, high viscosity for user perception, and effective cleaning in cold water, while also reducing 1,4-dioxane by-products and ensuring stable sudsing.
Innovation Solution
A liquid hand dishwashing detergent composition comprising an anionic surfactant system with alkyl glycol sulfate anionic surfactant and optionally further anionic surfactant in specific ratios, providing a balanced viscosity and ready dilution in cold water, while minimizing 1,4-dioxane formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If alkyl ethoxylated sulfate anionic surfactants are used to achieve good sudsing and grease cleaning, then cleaning performance is improved, but 1,4-dioxane by-product is formed
Solution Approach 1:
The patent extracts and eliminates the harmful ethoxylation step from the surfactant synthesis process. By using alkyl sulfate anionic surfactants instead of alkyl ethoxylated sulfate anionic surfactants, the formulation removes the source of 1,4-dioxane by-product formation while maintaining cleaning performance through alternative surfactant chemistry
Solution Approach 2:
The patent adopts a surfactant system that prioritizes environmental sustainability over long-term stability. By selecting alkyl sulfate anionic surfactants with shorter molecular structures and avoiding ethoxylation, the formulation creates a biodegradable, environmentally friendly cleaning system that trades some durability for reduced environmental harm
2Object-generated harmful factors
If alkyl sulfate anionic surfactants are used to reduce 1,4-dioxane by-product, then environmental sustainability is improved, but sudsing performance deteriorates
Solution Approach 1:
The patent combines alkyl sulfate anionic surfactants with amphoteric or zwitterionic co-surfactants to create a synergistic surfactant system. This combination merges the environmental benefits of alkyl sulfates with the sudsing-enhancing properties of co-surfactants, achieving both reduced 1,4-dioxane formation and improved sudsing performance
Solution Approach 2:
The patent creates a composite surfactant system consisting of multiple surfactant types working together. The blend of anionic surfactants with amphoteric or zwitterionic co-surfactants forms a composite cleaning system that delivers superior overall performance, including enhanced sudsing, grease removal, and low-temperature stability
3Ease of operation
If high viscosity is achieved to improve user perception of richness, then consumer appeal is improved, but dissolution rate in cold water deteriorates
Solution Approach 1:
The patent optimizes the viscosity parameters of the liquid detergent composition by selecting specific surfactant types and concentrations. The formulation achieves a balanced viscosity range that provides user-perceived richness while maintaining adequate fluidity for dissolution in cold water, adjusting physical parameters to satisfy both sensory and functional requirements
Solution Approach 2:
The patent creates local quality variations in the detergent composition by using specific surfactant blends that provide different functional properties at different stages. The formulation ensures high viscosity in the undiluted product for user perception while maintaining components that facilitate rapid dissolution when diluted in cold water
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 environmental sustainability, desired viscosity, and effective cleaning in cold water with stable sudsing, enhancing user perception and cleaning performance.
Implementation Method 1
a liquid hand dishwashing detergent composition comprising from 5.0% to 50% by weight of the liquid hand dishwashing detergent composition of a surfactant system, wherein the surfactant system comprises anionic surfactant, wherein the anionic surfactant comprises: alkyl glycol sulfate anionic surfactant
Data Source
AI summary
The need for a liquid hand dishwashing composition which is more environmentally sustainable while also providing a desired viscosity and being readily diluted in cold water, is met by formulating the liquid hand dishwashing detergent composition using alkyl glycol sulfate anionic surfactant and optionally further anionic surfactant in a weight ratio of from 1:1 to 1:0.