Washing agent composition for textile products

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Solution Overview

Problem

Existing detergent compositions for textile products, particularly those containing soil release agents and internal olefin sulfonates, do not effectively enhance the washability of soils attached to chemical fibers.

Innovation Solution

A detergent composition comprising a specific ratio of internal olefin sulfonates with varying sulfonate group positions and polysaccharide derivatives with controlled substitution degrees of cationic and hydrocarbon groups, enhancing the soil desorption effect.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional detergent compositions containing soil release agents and internal olefin sulfonates are used, then general washing performance is maintained, but washability of soils attached to chemical fibers is insufficient

Engineering Contradiction:
Improvewashability of soils from chemical fibersVSAvoidcomplexity of detergent composition formulation
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention changes the chemical parameters of the detergent composition by specifying precise ratios of internal olefin sulfonate isomers (IO-1S and IO-2S) with different carbon chain lengths and sulfonate group positions. This parameter optimization enables effective soil desorption from chemical fibers while maintaining formulation manageability through defined compositional ranges.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite detergent system combining internal olefin sulfonates with specific polysaccharide derivatives (soil release agents) and nonionic surfactants. This composite formulation synergistically enhances soil washability from chemical fibers by integrating multiple functional components with complementary mechanisms.

Inventive Principle:
Principle #40Composite materials

2Reliability

If the ratio of IO-1S to IO-2S is not optimized, then soil desorption effectiveness is reduced, but formulation flexibility is maintained

Engineering Contradiction:
Improvesoil desorption effectivenessVSAvoidformulation flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention optimizes the mass ratio parameter of IO-1S to IO-2S within the range of 0.30 to 3.0, with preferred sub-ranges. This parameter control maximizes soil desorption effectiveness by balancing the contributions of different sulfonate isomers while retaining flexibility to adjust ratios based on specific application requirements and soil types.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If substitution degree of hydrocarbon groups in polysaccharide derivatives is increased, then soil release performance is improved, but water solubility may be compromised

Engineering Contradiction:
Improvesoil release performanceVSAvoidwater solubility
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The invention controls the substitution degree parameter of hydrocarbon groups in polysaccharide derivatives within the range of 0.0001 to 0.4. This parameter optimization balances soil release performance enhancement with adequate water solubility maintenance, allowing the soil release agents to effectively attach to chemical fibers while remaining sufficiently soluble for detergent formulation and washing process.

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 significantly improves the washability of soils from textile products, especially those made of chemical fibers, by optimizing the adsorption and desorption properties of the internal olefin sulfonates and soil release agents.

Implementation Method 1

optimizing the adsorption and desorption properties of the internal olefin sulfonates and soil release agents

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

component (B) being one or more soil release agents selected from: as a component (b1), one or two or more of polysaccharide derivatives having one or more groups selected from a cationic group and a hydrocarbon group

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 3

component (C): a nonionic surfactant

Methodology Applied
Scientific EffectSurfactant: Surfactant

Data Source

PatentEP3722400B1Washing agent composition for textile products
Publication Date: 2026.03.04 KAO CORP
  • EP3722400B1 patent drawing
  • EP3722400B1 patent drawing
  • EP3722400B1 patent drawing

AI summary

The present invention is a detergent composition for textile products, containing the following component (A) and the following component (B): component (A): an internal olefin sulfonate with 16 or more and 24 or less carbons, wherein a mass ratio between an internal olefin sulfonate (IO-1S) with 16 or more and 24 or less carbons having a sulfonate group present at position 2 or higher and position 4 or lower and an internal olefin sulfonate (IO-2S) with 16 or more and 24 or less carbons having a sulfonate group present at position 5 or higher, which is (IO-2S)/(IO-1S), is 0.30 or more and 5 or less; and component (B): a soil release agent.