Sucrose Ester Solvent Mixtures for Aqueous Cosmetic Solubility
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Solution Overview
Problem
Sucrose esters have difficulty dissolving in cosmetic compositions, especially at higher levels or in an aqueous phase, which affects their effectiveness and sensory feel.
Innovation Solution
A method involving a mixture of sucrose esters and solvents with specific solubility parameters, combined with an aqueous carrier, to enhance solubility and provide a light, non-greasy feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If sucrose esters are contained at higher levels in cosmetic compositions, then the effectiveness and benefits from sucrose ester are improved, but the solubility of sucrose esters deteriorates
Solution Approach 1:
The patent introduces a specific solvent as an intermediary substance to facilitate the dissolution of sucrose esters in cosmetic compositions. The solvent acts as a mediator between the sucrose ester and the aqueous phase, enabling solubility at higher concentrations. The solvent has specific properties (Hildebrand solubility parameter of 23-31.5 J/cm³, viscosity of 50-500 cP at 25°C) that make it effective in bridging the solubility gap.
2Ease of operation
If sucrose esters are dissolved in an aqueous phase of cosmetic composition, then a fresh and light sensory feel is provided, but the solubility of sucrose esters deteriorates
Solution Approach 1:
The solvent serves as an intermediary that enables sucrose esters to dissolve in the aqueous phase while maintaining the desired fresh and light sensory feel. Without the solvent, sucrose esters would not be soluble enough in the aqueous phase. The solvent bridges the polarity gap between the hydrophobic sucrose ester and the hydrophilic aqueous phase, allowing dissolution while preserving the light sensory characteristics of aqueous-based formulations.
Solution Approach 2:
The patent changes the physical-chemical parameters of the system by introducing a solvent with specific properties (Hildebrand solubility parameter of 23-31.5 J/cm³, viscosity of 50-500 cP). This parameter change enables the sucrose ester to transition from being insoluble in the aqueous phase to being soluble, while maintaining the fresh and light sensory feel associated with aqueous formulations.
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 method ensures sucrose esters are dissolved in cosmetic compositions, providing benefits while offering a fresh and non-greasy sensory experience.
Implementation Method 1
A method of manufacturing a cosmetic composition comprising: preparing a mixture of: (a) one or more esters of sucrose and fatty acids... (b) one or more solvents selected from those having Hildebrand Solubility_parameter of from about 23 to about 31.5 (J/cm3)... wherein the mixture comprises from about 70% to about 100%, more preferably from about 80% to about 100%, still more preferably from about 90% to about 100%, by weight of the mixture, of the sum of the sucrose ester and the solvent, in view of solubilizing the sucrose esters.
Data Source
AI summary
The present invention is directed to a method of manufacturing a cosmetic composition comprising a step of preparing a mixture of: (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. By the method of manufacturing the cosmetic composition of the present invention, the sucrose esters can be dissolved 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.