Phosphonate Polymer Oral Care Composition for Stain Prevention
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Solution Overview
Problem
Current oral care compositions face challenges in effectively targeting multivalent cation-containing surfaces like calcium hydroxy apatite for stain prevention while being water-stable and safe for human consumption, as polyphosphates degrade in water and bisphosphonates are osteoporosis-active, making them unsuitable for ingestion.
Innovation Solution
A polymer comprising a phosphonate group and an anionic group, such as sulfonate, which is covalently bound to the polymer backbone or side chain, providing a stable and non-detrimental interaction with calcium surfaces, enabling effective stain prevention without the limitations of polyphosphates or bisphosphonates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyphosphates are used to target calcium surfaces, then tartar control and pellicle reduction are improved, but water stability deteriorates due to degradation over time
Solution Approach 1:
The patent changes the chemical structure parameter from polyphosphate to phosphonate-containing polymer, which fundamentally alters the molecular stability while maintaining the calcium-binding capability. This parameter change resolves the contradiction by providing both tartar control effectiveness and water stability simultaneously.
Solution Approach 2:
The invention uses a composite polymer structure containing both phosphonate groups (for calcium interaction) and anionic groups (for stability and solubility). This composite approach allows the material to exhibit both tartar control properties and enhanced water stability that neither component alone could achieve.
2Reliability
If bisphosphonates are used to target calcium surfaces, then tartar control effectiveness is improved, but safety for consumption deteriorates due to osteoporosis activity
Solution Approach 1:
The patent applies local quality by incorporating phosphonate groups specifically at the polymer sites that interact with calcium, while the rest of the polymer structure (anionic groups and backbone) provides safety and stability. This localized functional approach maintains effectiveness while eliminating harmful systemic effects.
Solution Approach 2:
The invention changes the molecular parameter from bisphosphonate to phosphonate-containing polymer with high molecular weight, which alters the bioavailability and pharmacological activity. The polymer structure prevents absorption while maintaining local calcium-binding activity at the tooth surface.
3Object-affected harmful factors
If polymers with high molecular weight are used to prevent intestinal absorption, then safety for consumption is improved, but residual monomers and oligomers may still pass through and cause harm
Solution Approach 1:
The patent employs preliminary action by thoroughly characterizing and controlling the polymerization process to ensure high molecular weight and minimal residual monomers before the product reaches the consumer. This preventive approach ensures safety by eliminating potentially harmful low molecular weight species before use.
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 phosphonate and anionic group combination in the polymer enhances water stability and safety for consumption, effectively preventing stains on teeth surfaces by interacting with calcium hydroxy apatite without the drawbacks of polyphosphates or bisphosphonates, offering improved performance in oral care applications.
Implementation Method 1
The phosphonate group also has weak interaction with calcium surfaces such as calcium hydroxy apatite
Implementation Method 2
said anionic group is covalently bound to the polymer backbone, side group, or side chain
Data Source
AI summary
Disclosed are oral care compositions of phosphonate and sulfonate group containing polymer compositions that have targeted uses with divalent cations and surfaces having divalent cations. These compounds can be used to deliver anionic character to surfaces such as calcium hydroxyapatite.