Two-Component Whitening Composition for Stable Hypochlorite Generation

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Solution Overview

Problem

Conventional whitening agents like hydrogen peroxide exhibit varying oxidation rates and stability issues, necessitating the development of improved oral care products with enhanced whitening efficacy and stability.

Innovation Solution

A two-component whitening composition comprising an anhydrous component with chloroisocyanurate and an aqueous component, which generates a whitening agent like hypochlorite upon mixing, avoiding peroxides and utilizing adhesion enhancing agents for improved adhesion and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hydrogen peroxide is used as a whitening agent, then whitening efficacy is achieved, but stability is decreased

Engineering Contradiction:

ImprovestabilityVSAvoidwhitening efficacy

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The whitening composition is divided into two separate components: an anhydrous component containing the chloroisocyanurate salt and an aqueous component. These components are maintained separately during storage to preserve stability, then combined at the time of use to generate the whitening agent, thereby achieving both stability during storage and efficacy when applied.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The necessary ingredients for generating the whitening agent are prepared in advance and stored separately in stable forms (anhydrous chloroisocyanurate salt and aqueous solution). When needed, these pre-prepared components are combined to generate the active whitening agent, ensuring both long-term stability and immediate efficacy.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If hydrogen peroxide is used to oxidize chromophores, then whitening is achieved, but different chromophores are oxidized at varying rates

Engineering Contradiction:

Improvewhitening efficacyVSAvoidoxidation uniformity

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent changes the chemical parameters by using a chloroisocyanurate salt-based system instead of hydrogen peroxide. This alternative chemistry provides more uniform oxidation characteristics across different chromophore types, addressing the inconsistency in whitening performance while maintaining effective whitening capability.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If the amount of hydrogen peroxide is increased to improve whitening, then whitening efficacy increases, but regulatory restrictions are exceeded

Engineering Contradiction:

Improvewhitening efficacyVSAvoidregulatory compliance

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent uses a different chemical system (chloroisocyanurate salt) that replicates the whitening function of hydrogen peroxide without being subject to the same regulatory constraints. This alternative approach achieves comparable or superior whitening efficacy while complying with regulations that limit hydrogen peroxide concentrations.

Inventive Principle:

Principle #26Copying

4Reliability

If a two-component system is used to improve stability, then stability increases, but device complexity increases

Engineering Contradiction:

ImprovestabilityVSAvoidcomposition complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

While the composition is divided into two components for stability, the patent provides simple merging instructions for combining them at the time of use. The components are designed to be easily mixable, and the combination process is straightforward, minimizing the practical complexity despite the two-component structure.

Inventive Principle:

Principle #5Merging (Combining)

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 achieves increased whitening efficacy and stability, providing effective teeth whitening without peroxide-related limitations, with the anhydrous and aqueous components maintaining stability until use and generating a potent whitening agent efficiently.

Implementation Method 1

contacting the anhydrous component and the aqueous component with one another to form a mixture, and contacting the mixture with surfaces of the teeth

Methodology Applied

Scientific EffectChemical reaction: Chemical Bonding

Implementation Method 2

conventional whitening gels including hydrogen peroxide are often utilized to oxidize chromophores on surfaces of teeth

Methodology Applied

Scientific EffectOxidation: Oxidation

Data Source

PatentEP3817714B1Whitening compositions and methods for the same

Publication Date: 2025.10.01 COLGATE PALMOLIVE CO

AI summary

A whitening composition, an oral care product including the whitening composition, and a method for whitening teeth are disclosed. The whitening composition may include an anhydrous component and an aqueous component. The anhydrous component may include a base gel and a chloroisocyanurate. The chloroisocyanurate may be present in the anhydrous component in an amount of from about 0.01 weight % to about 30 weight %, based on a totally weight of the anhydrous component. The anhydrous component may include water.