Oral Care Rheological Solid Composition With Firmness and Aqueous Release
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Solution Overview
Problem
Conventional oral care rheological solid compositions lack sufficient firmness, aqueous phase expression, and thermal stability, particularly when using sodium carboxylate-based crystallizing agents, which compromise the glide feel and cooling sensation, and are not thermally stable for reliable shelf life and supply chain.
Innovation Solution
A self-supporting oral care rheological solid composition is created with a crystalline mesh of fiber-like crystalline particles, formed from specific chain length sodium salts of fatty acids, allowing for a structured composition that expresses aqueous phase upon compression and maintains thermal stability above 40°C.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If high levels of polyols (propylene glycol and glycerin) are added as solubility aids for sodium stearate during processing, then the sodium stearate can be dissolved during processing, but the crunch and glide feel are eliminated and cooling sensation is muted
Solution Approach 1:
The patent changes the chemical composition parameters by using sodium carboxylate-based crystallizing agents with specific chain lengths (C13-C20) instead of conventional sodium stearate, and formulates the composition with controlled water content (50-90%) and optional polyols (0.1-10%) to achieve both processability and desirable sensory properties without requiring high levels of processing aids
Solution Approach 2:
The patent creates a composite oral care composition combining crystallizing agents, aqueous phase, and optional actives in a specific ratio range (crystallizing agent: 0.1-10%, water: 50-90%, optional actives: 0.1-5%) to achieve a balance between manufacturing feasibility and sensory performance
2Strength
If traditional soap bars are comprised of high concentrations of sodium carboxylate gelling agents, then firm structure is achieved, but aqueous phase expression with compression is not effective
Solution Approach 1:
The patent optimizes the concentration parameters of crystallizing agents (0.1-10%) and water content (50-90%) to achieve a formulation that maintains sufficient firmness while enabling effective aqueous phase expression upon compression, resolving the contradiction between structural integrity and fluid expression capability
3Ease of manufacture
If too soluble gelling agents are added to achieve desired properties, then the composition becomes more workable, but thermal stability is compromised and the composition cannot survive reliably on shelf life or in supply chain
Solution Approach 1:
The patent selects crystallizing agents with specific chain lengths (C13-C20) that provide optimal balance between solubility during processing and thermal stability during storage, achieving both workability and reliability without requiring excessive soluble additives
Solution Approach 2:
The patent applies different functional requirements to different components: crystallizing agents are selected for their dual capability of providing workability during processing and thermal stability during storage, while optional actives are included at controlled levels (0.1-5%) to enhance functionality without compromising stability
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 firmness between 0.1 N to 50.0 N, aqueous phase expression of 100 J m-3 to 8,000 J m-3, and thermal stability greater than 40°C, providing a unique feel and effective oral care benefits.
Implementation Method 1
a crystalline mesh ('mesh') comprises a relatively rigid, three-dimensional, interlocking crystalline skeleton frame of fiber-like crystalline particles (formed from crystallizing agents)
Implementation Method 2
If compressed above a critical stress, the mesh allows the oral care rheological solid composition to express the entrapped aqueous solution
Data Source
AI summary
An oral care product including an oral care rheological solid composition including a crystallizing agent, an aqueous phase, and oral care adjunct ingredient. The oral care product can be a floss, a dentifrice, and/or a whitening product. A method for making an oral care rheological solid composition by providing water, providing crystallizing agent, providing NaCl in an amount of about 10% or less, by weight of the oral care rheological solid composition; and mixing the water, crystallizing agent, and NaCl to produce the oral care rheological solid composition.