Sucrose Ester Solubility in Aqueous Cosmetic Compositions
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Solution Overview
Problem
Cosmetic compositions struggle to dissolve sucrose esters, especially when they are present at higher levels or in an aqueous phase, which hinders their effectiveness and sensorial feel.
Innovation Solution
A cosmetic composition comprising sucrose esters and solvents with specific Hildebrand and Hansen Solubility Parameters, along with an aqueous carrier, that ensures sucrose esters are dissolved, providing a light, non-greasy feel while maintaining their benefits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If sucrose esters are contained at higher levels in the cosmetic composition, then the effectiveness and benefits from sucrose ester are improved, but the solubility of sucrose esters deteriorates
Solution Approach 1:
The patent applies parameter changes by carefully controlling the Hildebrand solubility parameter of the solvent within the range of 15-31.5 (J/cm³)¹/² and the weight ratio of sucrose ester to solvent between 1:1 to 10:1. These parameter adjustments enable the system to achieve both high sucrose ester content and maintain solubility, resolving the contradiction between quantity and stability
Solution Approach 2:
The patent uses a specifically selected solvent as an intermediary substance that mediates between the sucrose ester and the aqueous phase. The solvent with controlled solubility parameters acts as a bridge, enabling high levels of sucrose ester to remain dissolved in the aqueous-based cosmetic composition, thus resolving the solubility issue at high concentrations
2Ease of operation
If sucrose esters are contained in an aqueous phase of the cosmetic composition, then a fresh and light sensorial feel is improved, but the solubility of sucrose esters deteriorates
Solution Approach 1:
The patent changes the solubility parameters of the solvent to fall within 15-31.5 (J/cm³)¹/², which enables the solvent to dissolve sucrose esters effectively in an aqueous phase. This parameter adjustment allows the composition to maintain both the desired fresh sensorial feel and the solubility of sucrose esters in water-based formulations
Solution Approach 2:
The patent creates a composite solvent system that combines properties enabling both aqueous compatibility and sucrose ester solubility. This composite approach allows the formulation to achieve a fresh, light sensorial feel characteristic of aqueous phases while simultaneously maintaining high solubility of sucrose esters through the specially selected solvent components
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 effectively dissolves sucrose esters at higher levels and in an aqueous phase, offering a fresh and non-greasy sensorial feel while providing the benefits of sucrose esters.
Implementation Method 1
one or more solvents selected from those having Hildebrand Solubility_parameter of from about 23 to about 31.5 (J/cm3)1/2 and Polar component of Hansen Solubility_parameter of from about 4.5 to about 10.5 (J/cm3)1/2. The cosmetic compositions of the present invention dissolve, the sucrose esters in the cosmetic compositions
Data Source
AI summary
The present invention is directed to a cosmetic composition comprising: (a) one or more esters of sucrose and fatty acids, wherein the fatty acids are selected from those having from about 12 to about 24 carbon atoms, and wherein the sucrose esters are selected from the group consisting of mono-ester, di-ester, tri-ester, tetra-ester, and mixtures thereof; and (b) one or more solvents selected from those having Hildebrand Solubility Parameter of from about 23 to about 31.5 (J/cm3)1/2 and Polar component of Hansen Solubility Parameter of from about 4.5 to about 10.5 (J/cm3)1/2. The cosmetic compositions of the present invention dissolve the sucrose esters in the cosmetic compositions, even when the sucrose esters are contained at higher levels in the compositions and/or even when the sucrose esters are contained in an aqueous phase of the cosmetic composition.