Tooth Whitening Composition for High-pH Peroxide Stability

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Solution Overview

Problem

Existing tooth whitening compositions face challenges in maintaining peroxide stability at high pH levels, leading to decomposition and loss of efficacy over time, which can cause container leakage and enamel erosion, while also increasing manufacturing costs and reducing user experience.

Innovation Solution

An oral composition containing peroxide, polyvalent phosphate, divalent metal phosphate, and water, with a pH of 5.5 or more, along with specific additives like binding and solubilizing agents, to stabilize hydrogen peroxide and enhance user experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If peroxide is formulated in toothpaste with water and high pH for cost competitiveness and user experience, then manufacturing cost is reduced and feeling of use is improved, but peroxide stability deteriorates and decomposition occurs during storage

Engineering Contradiction:

Improvemanufacturing costVSAvoidperoxide stability

Core Design Contradiction:

Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The patent introduces a complexing agent as an intermediary substance that mediates between peroxide and metal ions. The complexing agent forms stable complexes with metal ions, preventing them from catalyzing peroxide decomposition. This allows the formulation to maintain high pH and water content for cost effectiveness and user experience while preserving peroxide stability during storage through the mediating protective action of the complexing agent

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the chemical environment parameters by introducing complexing agents that alter the availability and reactivity of metal ions. This parameter change allows the system to maintain high pH levels without the harmful catalytic effect of free metal ions on peroxide decomposition, thus achieving both cost competitiveness and peroxide stability

Inventive Principle:

Principle #35Parameter changes

2Reliability

If peroxide is stored at high pH for extended periods, then whitening efficacy is maintained, but peroxide decomposes into water and hydrogen causing container swelling or bursting

Engineering Contradiction:

Improvewhitening efficacyVSAvoidperoxide decomposition

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary anti-action by adding complexing agents that preemptively bind metal ions before they can catalyze peroxide decomposition. This preliminary protective action prevents the harmful decomposition reaction from occurring, maintaining both peroxide stability and whitening efficacy during long-term storage at high pH

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The complexing agent provides beforehand cushioning by creating a protective chemical environment that cushions against the decomposition reaction. The complexing agent is present in advance to neutralize any metal ion catalysis that might occur, thus protecting the peroxide from decomposition and preventing container swelling or bursting during storage

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Stability of the object's composition

If pH is reduced to 4-5 to stabilize peroxide, then peroxide stability is improved, but tooth erosion risk increases

Engineering Contradiction:

Improveperoxide stabilityVSAvoidtooth erosion

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The complexing agent acts as an intermediary that allows the system to maintain high pH for tooth safety while preventing peroxide decomposition. By binding metal ions, the complexing agent removes the catalytic threat, enabling the formulation to safely operate at high pH levels that protect against tooth erosion

Inventive Principle:

Principle #24Intermediary (Mediator)

4Stability of the object's composition

If water content is reduced to improve peroxide stability at high pH, then storage stability is improved, but manufacturing cost increases and feeling of use decreases

Engineering Contradiction:

Improvestorage stabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The complexing agent serves as an intermediary that enables the formulation to maintain high water content for cost effectiveness and user experience while preventing peroxide decomposition. The complexing agent absorbs the stability-function, allowing water to remain in the formulation without compromising peroxide stability during storage

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 maintains peroxide stability during long-term storage, prevents enamel erosion, and maintains effective whitening efficacy while reducing manufacturing costs.

Implementation Method 1

a peroxide, such as hydrogen peroxide that releases active oxygen

Methodology Applied

Scientific EffectOxidation: Oxidation

Implementation Method 2

Methodology Applied

Scientific EffectComplexation:

Data Source

PatentUS20260034035A1Oral composition for tooth whitening

Publication Date: 2026.02.05 AE KYUNG IND CO LTD

AI summary

The present disclosure relates to an oral composition for tooth whitening, which contains a peroxide, a polyvalent phosphate, a divalent metal phosphate, and water.