AES Surfactant Blend Viscosity and Stability in Liquid Detergent
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid detergent compositions with low surfactant levels face challenges in achieving optimal viscosity, stability, and cleaning performance, particularly with anionic alkyl ethoxylated sulfate (AES) surfactants, where longer alkyl chain lengths improve cleaning but compromise physical stability, and external thickeners increase costs without additional detergency benefits.
Innovation Solution
A specific blend of AES surfactants with a high proportion of C15 alkyl chains and controlled weight average molecular weights, balanced with shorter chains, is used to enhance viscosity and cleaning performance while maintaining stability, eliminating the need for external thickeners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If AES surfactant with longer alkyl chain lengths (C14 or greater) is used to improve cleaning benefits, then cleaning performance is improved, but physical stability of the detergent composition deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the alkyl chain length distribution of AES surfactant, specifically targeting C14-C16 chains with optimal weighting. This parameter optimization allows the surfactant to provide improved cleaning performance while maintaining physical stability, resolving the contradiction between cleaning efficacy and composition stability.
Solution Approach 2:
The patent uses a composite surfactant system combining AES with specific alkyl chain length ranges (C14-C16) and complementary surfactants. This composite approach balances the high cleaning power of longer chains with the stability provided by the optimized distribution, achieving both improved cleaning and maintained physical stability without requiring external thickeners.
2Shape
If external thickeners such as salts or structurants are added to increase viscosity of low-surfactant compositions, then viscosity is improved, but manufacturing cost increases without additional detergency benefits
Solution Approach 1:
The patent extracts and eliminates the need for external thickeners by incorporating viscosity-building capability directly into the surfactant system itself. By optimizing AES alkyl chain composition, the formulation achieves appropriate viscosity inherently, removing the requirement for additional thickening agents and their associated costs.
Solution Approach 2:
The optimized AES surfactant system performs multiple functions simultaneously: it provides cleaning action, maintains physical stability, and builds viscosity. This multi-functionality eliminates the need for separate additives for each function, reducing formulation complexity and manufacturing cost while achieving the desired viscosity profile.
3Ease of manufacture
If low levels of surfactant (less than 20wt%) are used in detergent compositions, then manufacturing cost is reduced, but the composition appears thin or runnymaking it appear low quality and/or poor performance
Solution Approach 1:
The patent changes the critical parameters of the surfactant system by optimizing AES alkyl chain distribution (C14-C16 range) and combining with complementary surfactants. This parameter optimization enables low-surfactant formulations to achieve appropriate viscosity and appealing appearance, maintaining perceived quality while reducing surfactant content and associated costs.
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 improved viscosity and stability in low-surfactant formulations, providing enhanced cleaning performance on greasy soils without the additional cost of external thickeners, and offers formulation flexibility across different surfactant levels.
Implementation Method 1
Surfactants are the typical cleaning workhorse of such compositions, and anionic surfactants such as alkyl ethoxylated sulfate (AES) surfactant are common
Implementation Method 2
the cleaning benefits of certain liquid detergent compositions may be improved (for example, greasy soil removal) by formulating with AES surfactant that has relatively increased alkyl chain lengths
Data Source
AI summary
Liquid detergent composition including a surfactant system, the surfactant system including alkyl ethoxylated sulfate (AES) surfactant. Detergent pastes comprising AES surfactant. Related processes.