Ethylhexyl Triazone Solubilization in Alkane-Based SPF Compositions
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Solution Overview
Problem
Cosmetic compositions containing ethylhexyl triazone, which is a highly effective UV filter, face challenges in solubility when partially replaced by liquid C8-C30 alkanes, leading to a reduction in sun protection factor (SPF) and sensory properties.
Innovation Solution
Incorporating an ester of a fatty acid and dextrin with a mixture of branched and linear saturated C15-C19 alkanes, where the branched alkanes constitute over 80% by weight, enhances the solubilization of ethylhexyl triazone, maintaining high SPF and improving sensory properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If liquid C8-C30 alkanes are used to replace silicone oils to improve sensory properties, then sensory properties are improved, but solubility of ethylhexyl triazone is significantly reduced
Solution Approach 1:
The patent uses esters of fatty acids as intermediary substances that mediate between the alkane phase and ethylhexyl triazone. These esters have affinity for both the non-polar alkane and the UV filter, acting as solubility enhancers that allow high concentrations of ethylhexyl triazone to be maintained even when alkanes replace silicone oils in the formulation.
Solution Approach 2:
The patent modifies the chemical composition parameters by introducing specific esters of fatty acids with defined carbon chain lengths and structures. This parameter change in the formulation composition enables the system to achieve both improved sensory properties from alkanes and maintained solubility through the ester components.
2Ease of operation
If liquid C8-C30 alkanes are used to replace silicone oils, then sensory properties are improved, but sun protection factor (SPF) is significantly reduced
Solution Approach 1:
Esters of fatty acids serve as intermediary substances that enable high solubility of ethylhexyl triazone in alkane-based formulations. By maintaining high concentrations of the UV filter through this intermediary mechanism, the sun protection factor remains high even when silicone oils are replaced by alkanes for improved sensory properties.
Solution Approach 2:
The patent creates a composite formulation system combining alkanes, esters of fatty acids, and ethylhexyl triazone. This composite approach allows the formulation to leverage the sensory benefits of alkanes while the ester-UV filter complex maintains effective sun protection levels.
3Quantity of substance
If esters of fatty acids are used to increase solubility of ethylhexyl triazone, then solubility is improved, but formulation complexity increases
Solution Approach 1:
The patent specifies particular parameter ranges for the esters of fatty acids (carbon chain length, molecular weight, esterification degree) to optimize solubility enhancement. By defining these parameters within specific ranges, the formulation achieves high solubility while maintaining manageable complexity through standardized selection criteria.
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 solution provides cosmetic compositions with improved sensory properties and higher SPF by effectively solubilizing ethylhexyl triazone, utilizing sustainable ingredients from biological origins.
Implementation Method 1
the cosmetic composition according to claim 1 allows to solve this problem... allows to obtain a high solubilization of the UV filter ethylhexyl triazone comprising liquid C8-C30 alkanes
Data Source
AI summary
The present invention relates to cosmetic composition comprising an ester of a fatty acid and dextrin, a mixture of branched and linear saturated C15-C19, wherein said mixture comprised primarily branched saturated C15-C19, and a UV-filter of the formula (I) This cosmetic composition allows a high amount of the UV-filter of the formula (I) to be solubilized which leads to compositions having a very high absorbance of harmful UV light, i.e. to compositions having a high Sun Protection Factor (SPF).