Detergent Formulation Using Polyacrylic Acid to Boost Suds
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Solution Overview
Problem
Existing liquid hand dishwashing detergents often irritate skin and compromise suds mileage, which is a measure of cleaning effectiveness, especially when using milder surfactants.
Innovation Solution
An aqueous liquid hand dishwashing detergent formulation that includes water, an anionic surfactant, and a suds enhancing additive, where the suds enhancing additive is a polyacrylic acid homopolymer with a molecular weight of 1,000 to 7,500 Daltons, optionally blended with a nonionic surfactant and a sulfonated polymer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If milder surfactants are used, then skin irritation is reduced, but suds mileage deteriorates
Solution Approach 1:
A polyacrylic acid homopolymer with molecular weight of 1,000 to 7,500 Daltons is introduced as an intermediary substance that enhances suds formation and stability. This polymer acts as a mediator between the mild surfactant and the desired suds performance, allowing the formulation to achieve adequate suds mileage without requiring harsher surfactants that would cause skin irritation.
Solution Approach 2:
The patent specifies a precise molecular weight range (1,000 to 7,500 Daltons) for the polyacrylic acid homopolymer to optimize its suds-enhancing properties. By controlling this critical parameter, the formulation achieves improved suds performance while maintaining compatibility with mild surfactants, thus resolving the contradiction between gentleness and effectiveness.
2Object-affected harmful factors
If anionic surfactant concentration is reduced, then skin irritation is reduced, but cleaning effectiveness deteriorates
Solution Approach 1:
The polyacrylic acid homopolymer serves as an intermediary that compensates for the reduced anionic surfactant concentration. It enhances the foaming and cleaning properties of the formulation, allowing lower surfactant levels to maintain effective cleaning performance without compromising reliability.
Solution Approach 2:
The invention creates a composite detergent system combining mild surfactants with polyacrylic acid homopolymer. This composite formulation achieves synergistic effects where the polymer enhances the cleaning effectiveness of reduced surfactant concentrations, maintaining reliability while reducing skin irritation.
3Quantity of substance
If suds enhancing additive is added, then suds mileage is improved, but formulation complexity increases
Solution Approach 1:
The patent specifies a narrow molecular weight range (1,000 to 7,500 Daltons) for the polyacrylic acid homopolymer, which simplifies the selection and manufacturing process. By defining precise parameter ranges, the invention makes it easier to source and incorporate the suds-enhancing additive without significantly increasing formulation complexity.
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 formulation achieves enhanced suds mileage while reducing the required concentration of anionic surfactant by at least 30%, thereby improving aesthetic characteristics such as hand feel and maintaining effective cleaning performance.
Implementation Method 1
a suds enhancing additive, wherein the suds enhancing additive comprises a polyacrylic acid homopolymer having a molecular weight of 1,000 to 7,500 Daltons
Data Source
AI summary
Aqueous liquid hand dishwashing detergent formulation, is provided including water; an anionic surfactant; and a suds enhancing additive, wherein the suds enhancing additive is a polyacrylic acid homopolymer having a molecular weight of 1,000 to 7,500 Daltons.