Liquid Detergent Composition with Hydrogen Peroxide Stability

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Solution Overview

Problem

Detergents containing hydrogen peroxide face challenges in stability due to decomposition by transition metal cations and alkaline conditions, leading to reduced cleaning efficiency and shelf life.

Innovation Solution

A stable liquid detergent composition comprising 3 to 35 wt% hydrogen peroxide, 0.0005 to 5 wt% peroxy acid or salts, 0.0005 to 1 wt% chelating stabilizer, and 0.1 to 60 wt% surfactant, with a pH of 6 or less, which maintains hydrogen peroxide stability for up to two years and provides effective cleaning and biocidal properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hydrogen peroxide is used as a bleaching agent in detergent formulations, then cleaning and bleaching efficiency is improved, but stability during storage deteriorates due to decomposition by transition metal cations and alkaline conditions

Engineering Contradiction:

Improvecleaning and bleaching efficiencyVSAvoidhydrogen peroxide stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent introduces specific stabilizers (silicates, phosphates, or carboxylic acids) as intermediary substances that mediate between hydrogen peroxide and the harmful components (transition metal cations and alkaline conditions). These stabilizers act as protective intermediaries that prevent direct decomposition reactions while allowing the detergent to maintain its cleaning functionality.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent modifies the chemical parameters of the detergent formulation by controlling pH levels and introducing specific stabilizing agents. By adjusting the pH to be less than 11 and incorporating stabilizers at concentrations of 0.1-10% and 0.01-1% respectively, the patent changes the chemical environment to prevent hydrogen peroxide decomposition while maintaining cleaning efficiency.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If alkaline conditions are used to achieve good cleaning efficiency, then cleaning performance is improved, but hydrogen peroxide decomposition rate increases

Engineering Contradiction:

Improvecleaning efficiencyVSAvoidhydrogen peroxide stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent optimizes the pH parameter by setting it to be less than 11, which is sufficiently alkaline to maintain cleaning efficiency but not so high as to accelerate hydrogen peroxide decomposition. This parameter optimization resolves the contradiction between cleaning performance and peroxide stability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces carboxylic acids and other stabilizing agents as intermediaries that buffer the alkaline conditions. These substances moderate the pH environment, preventing extreme alkalinity that would cause rapid peroxide decomposition while maintaining sufficient alkalinity for effective cleaning.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If transition metal cations are present in detergent ingredients, then surfactant and builder functionality is maintained, but hydrogen peroxide decomposition is accelerated

Engineering Contradiction:

Improvesurfactant and builder functionalityVSAvoidhydrogen peroxide stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent introduces silicates and phosphates as intermediary substances that selectively bind to transition metal cations. These stabilizers act as chelating agents that sequester the metal cations, preventing them from catalyzing hydrogen peroxide decomposition while allowing the detergent's surfactant and builder components to maintain their intended functionalities.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 ensures long-term stability and cleaning efficacy at lower washing temperatures, effectively removing stains and disinfecting surfaces while maintaining biocidal activity, suitable for various applications including laundry and disinfection.

Implementation Method 1

0.0005 to 1 wt% of at least one chelating stabilizer

Methodology Applied

Scientific EffectChelation:

Implementation Method 2

hydrogen peroxide breaks down into innocuous products such as oxygen and water

Methodology Applied

Scientific EffectDecomposition:

Implementation Method 3

efficiently cleaning materials, such as removing stains from textiles

Methodology Applied

Scientific EffectCleaning:

Implementation Method 4

the composition of the present invention shows an effective biocidal activity

Methodology Applied

Scientific EffectBiocidal activity:

Data Source

PatentEP4632054A1Detergent composition

Publication Date: 2025.10.15 BELINKA PERKEMIJA KEMICNA INDUSTRIJA D O O

AI summary

The present invention relates to a stable liquid detergent composition comprising - 3 to 35 wt% of hydrogen peroxide, - 0.0005 to 5 wt% of at least one peroxy acid or salts thereof, - 0.0005 to 1 wt% of at least one chelating stabilizer, and - 0.1 to 60 wt% of at least one surfactantand optionally water to 100 wt%.