Polysaccharide Ester Detergent Composition for Soil-Present Dye Transfer

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Solution Overview

Problem

Existing dye transfer inhibition technologies fail to effectively prevent dye transfer during laundering in the presence of soil, which complicates real-world laundry processes involving dark and light-colored items.

Innovation Solution

Incorporating a polysaccharide ester with specific structural characteristics into a laundry detergent composition, along with a detersive surfactant, to prevent dye transfer by enhancing the composition's ability to manage dye bleeding and soil interactions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional dye transfer inhibition technologies are used, then dye bleeding is reduced, but they fail to effectively prevent dye transfer in the presence of soil

Engineering Contradiction:

Improvedye transfer prevention effectivenessVSAvoidperformance in complex laundry scenarios with soil

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention uses a composite material consisting of a polysaccharide backbone with ester groups attached thereto. This composite structure combines the dye transfer inhibition capability with enhanced soil interaction properties, allowing effective dye transfer prevention even in the presence of soil. The specific composite nature (polysaccharide + ester groups) provides both the dye binding function and the soil management capability.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention specifies precise parameter ranges for the polysaccharide ester structure: degree of polymerization (DPn) from 5 to 1400, and degree of substitution of ester groups from 0.001 to 1.50. By optimizing these parameters, the material achieves effective dye transfer prevention while maintaining compatibility with soil presence. The parameter optimization allows the material to function reliably in complex laundry scenarios.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If polysaccharide ester with specific structure is used, then dye transfer prevention is improved in presence of soil, but composition complexity increases

Engineering Contradiction:

Improvedye transfer prevention effectivenessVSAvoidcomposition structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention defines specific parameter ranges for the polysaccharide ester (DPn: 5-1400, degree of substitution: 0.001-1.50) that balance performance and complexity. These parameter specifications ensure effective dye transfer prevention while maintaining a manageable composition structure that can be practically formulated and manufactured.

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 polysaccharide ester effectively prevents dye transfer in the presence of soil, providing improved performance in complex laundry scenarios.

Implementation Method 1

certain polysaccharide esters prevent dye transfer during laundering process in the presence of soil when incorporated into a laundry detergent composition that additionally comprises a detersive surfactant

Methodology Applied

Scientific EffectEster group interaction: Absorption (physical)