Laundry Composition Synergy for Knitted Cotton Softness

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Solution Overview

Problem

Existing fabric treatment compositions do not effectively maintain the softness of knitted cotton fabrics after multiple wash cycles, despite efforts to combine surfactants, cationic polymers, and silicones.

Innovation Solution

A method using a laundry composition comprising a soil release polymer, silicone, cationic polymer, and surfactant, with a specific ratio of soil release polymer to silicone, which synergistically enhances the softening of knitted cotton by preventing deposition on cotton while effectively binding to fabric.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If soil release polymer is added to laundry composition, then softening performance is improved through synergy with silicone, but soil release polymer does not deposit on cotton material which limits its effectiveness

Engineering Contradiction:
Improvesoftening performanceVSAvoidlack of deposition on cotton
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent combines soil release polymer and silicone in a laundry composition to achieve synergistic softening effect. The mixture allows the soil release polymer to enhance the softening performance of silicone without requiring direct deposition on cotton, as the two components work together in the wash liquid to soften knitted cotton fabrics.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If multiple fabric treatment ingredients are combined to maintain softness, then softening effect is enhanced, but the complexity of the laundry composition increases

Engineering Contradiction:
Improvemaintenance of softnessVSAvoidcomposition complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The soil release polymer serves multiple functions in the composition: it acts as a softening agent that synergizes with silicone, provides soil release properties, and maintains stability in the wash liquid. This multi-functionality reduces the need for separate additives, thereby managing composition complexity while enhancing softening performance.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Object-generated harmful factors

If soil release polymer is used alone, then it provides soil release function, but it does not effectively soften knitted cotton fabrics

Engineering Contradiction:
Improvesoil release functionVSAvoidsoftening effect
Core Design Contradiction:
Object-generated harmful factorsVSReliability

Solution Approach 1:

The patent combines soil release polymer and silicone in a laundry composition to achieve synergistic softening effect. The mixture allows the soil release polymer to enhance the softening performance of silicone without requiring direct deposition on cotton, as the two components work together in the wash liquid to soften knitted cotton fabrics.

Inventive Principle:
Principle #5Merging (Combining)

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 significantly improves the softness of knitted cotton by reducing friction, as measured by texture analysis, demonstrating enhanced fabric care and maintenance of softness through repeated wash cycles.

Implementation Method 1

a synergy has been found to exist between soil release polymers and silicone polymers which leads to improved softening of knitted cotton

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

The composition significantly improves the softness of knitted cotton by reducing friction

Methodology Applied
Scientific EffectLubrication: Lubrication

Data Source

PatentEP3759206B1Method of softening a laundry composition
Publication Date: 2024.04.03 UNILEVER IP HLDG BV
  • EP3759206B1 patent drawing
  • EP3759206B1 patent drawing
  • EP3759206B1 patent drawing

AI summary

A laundry composition comprising: a. Soil release polymer b. Silicone c. Cationic polymer d. Surfactant e. Water