Anionic Surfactant Composition for Temperature-Stable Hard Surface Cleaning

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Solution Overview

Problem

There is a need for a hard surface cleaning composition with a good environmental profile that provides effective emulsification and oily soil removal without compromising consumer satisfaction in terms of cleaning performance and product appeal, while addressing consumer preferences for eco-friendly products and maintaining temperature stability.

Innovation Solution

A liquid aqueous detergent composition comprising a specific combination of anionic surfactants, polyethylene oxide, and betaine, with a surfactant system that includes a weight ratio of primary surfactant to secondary surfactant ranging from 4:1 to 8:1, and a ratio of average EO to total surfactant B less than 0.45, free of alkylbenzene sulphonates, to ensure temperature stability and cleaning efficacy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If polyethylene oxide and amphoteric surfactant are used to improve emulsification and oily soil removal, then cleaning efficacy is improved, but temperature stability deteriorates

Engineering Contradiction:
Improveemulsification and oily soil removalVSAvoidtemperature stability
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

The patent modifies the chemical composition parameters by introducing a specific anionic surfactant system (surfactant A and surfactant B with defined formulas and ratios) to replace or supplement the conventional polyethylene oxide and amphoteric surfactant combination. This parameter change maintains the emulsification and oily soil removal efficacy while achieving temperature stability.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite surfactant system combining anionic surfactants (surfactant A and surfactant B) in specific ratios to form a new functional material that provides both cleaning efficacy and temperature stability. The composite nature of this surfactant system allows it to perform multiple functions simultaneously.

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If surfactant amount is reduced to improve environmental profile, then eco-friendliness is improved, but cleaning efficacy deteriorates

Engineering Contradiction:
Improveenvironmental impactVSAvoidcleaning efficacy
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent changes the surfactant composition parameters by using a specific anionic surfactant system with defined molecular structures and ratios, which provides high cleaning efficacy at lower concentrations. This allows reduction of total surfactant amount while maintaining or improving cleaning performance.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a simplified surfactant system that copies the essential cleaning functions of conventional multi-surfactant formulations but with reduced total surfactant content. The anionic surfactant system replicates the emulsification and soil removal capabilities with fewer and more efficient components.

Inventive Principle:
Principle #26Copying

3Shape

If clear and transparent product formulation is used to improve product appearance, then consumer appeal is improved, but temperature stability deteriorates

Engineering Contradiction:
Improveproduct appearanceVSAvoidtemperature stability
Core Design Contradiction:
ShapeVSStability of the object's composition

Solution Approach 1:

The patent modifies the formulation parameters by selecting specific anionic surfactants with defined chemical structures that remain soluble and stable across temperature ranges. The specific ratio of surfactant A to surfactant B is optimized to maintain clarity while achieving temperature stability.

Inventive Principle:
Principle #35Parameter changes

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 maintains temperature stability and cleaning performance, providing effective emulsification and oily soil removal, while meeting consumer expectations for clarity and environmental friendliness.

Implementation Method 1

a specific combination of anionic surfactants provides temperature stability

Methodology Applied
Scientific EffectTemperature stability:

Implementation Method 2

provides effective emulsification and oily soil removal

Methodology Applied
Scientific EffectEmulsification: Emulsion

Implementation Method 3

A cleaning product often comprises a surfactant system containing different types of surfactant to provide for cleaning efficacy

Methodology Applied
Scientific EffectSurfactant action: Surfactant

Data Source

PatentUS12448587B2Hard surface cleaning composition
Publication Date: 2025.10.21 CONOPCO INC
  • US12448587B2 patent drawing
  • US12448587B2 patent drawing

AI summary

The present invention relates to liquid aqueous detergent compositions comprising a surfactant system comprising a primary surfactant being anionic surfactant, a secondary surfactant being amphoteric surfactant and polyethylene oxide whilst the surfactant system is free of alkylbenzene sulphonates and derivatives thereof. The invention further relates to a method of cleaning a stainless-steel hard surface using the composition of the invention, as well as the use thereof.