Calcium Carbonate Toothpaste Thickening System
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Solution Overview
Problem
Current calcium carbonate-based anti-cavity toothpastes face challenges in achieving a cost-effective formulation with improved rheology, aesthetics, and mouthfeel, as they often rely on high concentrations of calcium carbonate and limited gum systems like CMC, xanthan gum, and carrageenan, which can be costly and restrictive in terms of formulation options.
Innovation Solution
A calcium carbonate-based oral care composition incorporating a thickening system comprising xanthan gum and a synthetic polyacrylic acid polymer, such as Carbopol 956 or Carbopol ETD2020, in specific weight percentages, which maintains viscosity and yield stress over time, providing a more cost-effective and aesthetically pleasing toothpaste or gel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high concentration of calcium carbonate is used, then anti-cavity effectiveness is improved, but formulation cost and manufacturing complexity increase
Solution Approach 1:
The patent optimizes the concentration parameter of calcium carbonate from traditional high concentrations (30-50%) to a reduced range (25-40%), while compensating for the lower concentration through enhanced binder systems and adjuvants to maintain anti-cavity effectiveness at reduced formulation cost
Solution Approach 2:
The patent creates a composite binder system combining multiple polymers (carboxymethylcellulose, xanthan gum, carrageenan) and adjuvants that work synergistically with calcium carbonate to maintain paste stability, viscosity, and therapeutic effectiveness at lower abrasive concentrations
2Stability of the object's composition
If traditional gum systems (CMC, xanthan gum, carrageenan) are used, then paste stability is improved, but formulation options and cost-effectiveness are limited
Solution Approach 1:
The patent merges multiple gum systems (carboxymethylcellulose, xanthan gum, and carrageenan) into a single composite binder formulation, combining their respective strengths in paste stability, viscosity control, and mouthfeel to create a more versatile and cost-effective formulation approach
Solution Approach 2:
The composite binder system serves multiple functions simultaneously: providing paste stability, controlling rheology, enhancing mouthfeel, and maintaining compatibility with calcium carbonate abrasives, thereby reducing the need for separate formulation adjustments
3Reliability
If high concentration of calcium carbonate is used, then abrasive effectiveness is improved, but rheological stability and mouthfeel are compromised
Solution Approach 1:
The patent changes the concentration parameter of calcium carbonate to optimal levels (25-40%) and adjusts binder concentrations and formulation parameters to maintain rheological stability and mouthfeel while preserving abrasive effectiveness
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 xanthan gum and synthetic polyacrylic acid polymers in calcium carbonate-based compositions results in stable rheological properties and improved mouthfeel, achieving a viscosity range of 200,000-1,000,000 cps and dynamic yield stress of 60-250 Pa, while reducing costs and enhancing the oral care product's performance.
Implementation Method 1
a thickening system comprising xanthan gum and a synthetic polyacrylic acid polymer... which maintains viscosity and yield stress over time, providing a more cost-effective and aesthetically pleasing toothpaste or gel
Implementation Method 2
maintains viscosity and yield stress over time... achieving a viscosity range of 200,000-1,000,000 cps
Implementation Method 3
Each polymer provides the formula with different rheological properties... which maintains viscosity and yield stress over time
Data Source
AI summary
The present invention provides calcium carbonate-based oral care compositions, in particular toothpastes comprising a thickening system comprising 0.2-0.5 wt. % xanthan gum and 0.2-0.5 wt. % synthetic polyacrylic acid polymer, as well as methods of using these compositions.