Liquid Bleaching Composition Surfactant Ratio Viscosity
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Solution Overview
Problem
Existing liquid bleaching compositions for laundry and surface cleaning face limitations in stain removal performance and viscosity, requiring the addition of polymeric thickeners to achieve desired consistency and effectiveness.
Innovation Solution
A liquid bleaching composition comprising a peroxygen bleach, a sulphonated anionic surfactant, and an amphoteric/zwitterionic surfactant with a specific ratio, which enhances viscosity and stain removal performance without the need for polymeric thickeners, achieving a gel-like consistency and improved bleaching performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If polymeric thickeners are added to liquid bleaching compositions to achieve gel-like consistency, then viscosity is improved, but product complexity and potential fabric damage increase
Solution Approach 1:
The invention extracts and eliminates the need for polymeric thickeners from the composition formulation. Instead of adding thickening agents, the patent uses a specific surfactant system (combination of anionic, nonionic, and amphoteric/zwitterionic surfactants) that self-thickens the liquid composition to gel-like consistency, thereby removing harmful substances while achieving the desired viscosity.
Solution Approach 2:
The invention changes the chemical composition parameters by specifying precise ratios of different surfactant types (anionic, nonionic, and amphoteric/zwitterionic) to achieve the desired gel-like consistency. This parameter adjustment allows the composition to self-thicken without external thickeners, transforming the rheological properties through compositional optimization rather than additive incorporation.
2Reliability
If conventional surfactant systems are used in liquid bleaching compositions, then basic cleaning performance is achieved, but stain removal performance on greasy stains is insufficient
Solution Approach 1:
The invention employs a composite surfactant system combining three types of surfactants (anionic, nonionic, and amphoteric/zwitterionic) in specific ratios. This composite approach creates synergistic effects that enhance stain removal performance on difficult stains like grease and coffee, while the structured formulation maintains ease of manufacture through defined compositional ranges rather than complex multi-step processes.
3Object-affected harmful factors
If the composition is formulated to achieve high viscosity without polymeric thickeners, then product safety and simplicity improve, but achieving sufficient gel-like consistency becomes difficult
Solution Approach 1:
The surfactant system in the invention performs self-service by automatically thickening the liquid composition to gel-like consistency through its inherent chemical properties and intermolecular interactions. The specific combination of anionic, nonionic, and amphoteric/zwitterionic surfactants self-assembles to create a structured network that provides the desired viscosity without requiring external polymeric thickeners, thereby eliminating harmful substances while achieving the target rheological properties.
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 high viscosity up to 28,800 centipoise and superior stain removal performance on various stains, outperforming commercial products in both prespot and whole wash detergency tests, without the use of polymeric thickeners.
Implementation Method 1
a liquid composition having a pH below 7, comprising a peroxygen bleach, a sulphonated anionic surfactant and a second surfactant selected from nonionic surfactants amphoteric surfactants, zwitterionic surfactants and mixtures thereof
Implementation Method 2
the specific surfactant combination of the present invention could provide both viscosity enhancement and increase stain removal performance
Implementation Method 3
liquid peroxygen bleach containing compositions have been extensively described in the art, especially in laundry applications as laundry detergents, laundry additives or laundry pretreaters. The use of such peroxygen bleach containing compositions in laundry applications to boost the removal of encrusted stains and soils such as grease, coffee, tea, grass, mud/clay containing soils
Data Source
AI summary
The present invention relates to a liquid cleaning composition comprising a peroxygen bleach, a sulfonated anionic surfactant and an amphoteric/zwitterionic surfactant where the sulfonated anionic surfactant and the amphoteric/zwitterionic surfactants are in a ratio of from 0.1:1 to 13:1. The combination of the sulfonated anionic surfactant and the amphoteric/zwitterionic surfactants provides for high viscosities and improved cleaning performance.