Oral Care Compositions Stabilizing Hydrogen Peroxide
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Solution Overview
Problem
Conventional structure-building agents fail to provide a stable and homogeneous structure in oral care compositions containing non-aqueous liquids and hydrogen peroxide whitening agents, leading to instability and variable peroxide delivery.
Innovation Solution
An oral care composition incorporating a peroxydone complex, such as crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, combined with an amphiphilic copolymer structure-building agent like polyvinylpyrrolidone vinyl acetate, and a non-aqueous liquid dispersant like triacetin, which stabilizes the whitening agent and maintains a homogenous gel state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional structure-building agents (PVP, Carbopol, plastic gels) are used, then the oral care composition can achieve basic viscosity and structure, but the composition becomes unstable and non-homogeneous when containing significant amounts of non-aqueous dispersants
Solution Approach 1:
The patent employs a composite structure-building system combining hydrophilic gelling agents (Carbopol, PVP) with hydrophobic gelling agents (plastic gels, waxes) to create a stable homogeneous structure in non-aqueous oral care compositions. This composite approach allows the hydrophilic components to interact with water-soluble ingredients while hydrophobic components stabilize non-aqueous dispersants, resolving the instability-homogeneity contradiction
2Reliability
If hydrogen peroxide is used as a whitening agent, then teeth whitening effect is achieved, but the peroxide decomposes spontaneously over time leading to variable delivery and formulation instability
Solution Approach 1:
The patent incorporates hydrogen peroxide into a pre-formulated stable matrix containing structure-building agents and non-aqueous dispersants before use. This preliminary stabilization through proper formulation ensures the peroxide remains stable during storage and delivers a consistent, predictable amount of active ingredient during application, resolving the effectiveness-stability contradiction
3Quantity of substance
If high levels of peroxide are initially formulated, then strong whitening capability is achieved, but the peroxide decomposes over time resulting in variable delivery depending on storage conditions
Solution Approach 1:
The patent optimizes the formulation parameters including the type and concentration of structure-building agents, non-aqueous dispersants, and pH conditions to create a stable environment for hydrogen peroxide. By carefully controlling these parameters, the formulation maintains consistent peroxide levels and delivers a precise, predictable amount of active ingredient regardless of storage conditions, resolving the quantity-precision contradiction
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 a stable and homogenous gel structure with maintained hydrogen peroxide levels over time, ensuring effective whitening and stability, even in aqueous environments like the oral cavity.
Implementation Method 1
polyvinylpyrrolidone copolymer structure-building agent... provide a stable and homogeneous structure... homogenous gel state
Implementation Method 2
non-aqueous liquid dispersant... stabilizes the whitening agent and maintains a homogenous gel state
Data Source
AI summary
Described herein are oral care compositions, comprising a peroxydone complex, a dispersant, and a polyvinylpyrrolidone copolymer structure-building agent.