Xanthine Derivatives Stabilize Hydrogen Peroxide

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Solution Overview

Problem

Aqueous hydrogen peroxide compositions used in bleaching, dyeing, and perming processes suffer from decomposition over time, especially at elevated temperatures, leading to reduced performance and shelf life issues, which prior art has not adequately addressed.

Innovation Solution

Incorporating xanthine derivatives into the aqueous oxidizing compositions at concentrations above 5% by weight of hydrogen peroxide, which stabilizes the hydrogen peroxide and maintains its activity over storage, preventing viscosity changes and ensuring consistent performance in bleaching, dyeing, and perming processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If hydrogen peroxide is stored for extended periods, then shelf life is extended, but decomposition increases and active oxygen decreases

Engineering Contradiction:

Improveshelf lifeVSAvoidactive oxygen content

Core Design Contradiction:

Duration of action of stationary objectVSReliability

Solution Approach 1:

The patent introduces stabilizing agents (such as phosphonic acids, carboxylic acids, or metal complexes) as intermediary substances that mediate between hydrogen peroxide and decomposition pathways. These stabilizers act as protective intermediaries that prevent direct decomposition while allowing extended storage, thus resolving the contradiction between shelf life and active oxygen content.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent modifies storage parameters such as temperature, pH, and concentration to optimize stability. By controlling these parameters within specific ranges, the decomposition rate is reduced while maintaining shelf life extension, allowing the system to achieve both long storage duration and high active oxygen content.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If storage temperature is increased, then storage flexibility is improved, but decomposition rate increases

Engineering Contradiction:

Improvestorage flexibilityVSAvoiddecomposition rate

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent converts the harmful effect of temperature-induced decomposition into a beneficial feature by using stabilizing agents that are specifically activated or become more effective at elevated temperatures. The stabilizers prevent decomposition even under warm storage conditions, transforming the potential harm of temperature flexibility into a benefit for both storage flexibility and stability.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Productivity

If hydrogen peroxide concentration is increased, then oxidative performance is improved, but decomposition and viscosity changes worsen

Engineering Contradiction:

Improveoxidative performanceVSAvoidviscosity stability

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The patent introduces stabilizing agents as intermediaries that prevent viscosity changes and decomposition even at high hydrogen peroxide concentrations. These stabilizers mediate the interaction between high concentration and decomposition pathways, allowing the system to maintain both high oxidative performance and compositional stability without unwanted viscosity changes.

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 use of xanthine derivatives significantly enhances the chemical and physical storage stability of hydrogen peroxide, maintaining its activity and ensuring consistent performance in bleaching, dyeing, and perming processes, even at elevated temperatures, thereby extending the shelf life and maintaining process effectiveness.

Implementation Method 1

Methodology Applied

Scientific EffectStabilization:

Implementation Method 2

the hydrogen peroxide tends to undergo a decomposition process during storage whereby the available active oxygen in the composition decreases over time

Methodology Applied

Scientific EffectDecomposition: Decomposition (biological)

Implementation Method 3

stabilizes the hydrogen peroxide and maintains its activity over storage, preventing viscosity changes

Methodology Applied

Scientific EffectViscosity stabilization:

Data Source

PatentEP4051227B1Aqueous oxidative composition comprising xanthine derivatives

Publication Date: 2023.12.20 KAO CORP

AI summary

The present invention relates to an aqueous oxidizing composition comprising xanthine derivatives. It has been unexpectedly found out that xanthine derivatives stabilize hydrogen peroxide compositions during storage.