Composition comprising two polyglyceryl fatty acid esters
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Solution Overview
Problem
Cleansing cosmetic products containing polyglyceryl fatty acid esters with less than 10 glycerol units lack stability and sufficient makeup removability, while those with 10 or more glycerol units are less biodegradable, posing environmental risks.
Innovation Solution
A composition comprising polyglyceryl fatty acid diesters and monoesters with 6 to 22 carbon atoms and less than 10 glycerol units, along with an average HLB value of 8.0 to 11.0, and a specific weight ratio, to enhance biodegradability, stability, and makeup removability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If polyglyceryl fatty acid esters with 10 or more glycerol units are used as surfactants, then makeup removability and refreshed feeling are improved, but biodegradability deteriorates and environmental risk increases
Solution Approach 1:
The patent changes the parameter of glycerol unit number from 10 or more to less than 10 (specifically 2-9 units), thereby transforming the surfactant's properties to achieve both high biodegradability and sufficient makeup removability through optimized hydrophilic-lipophilic balance
Solution Approach 2:
The patent creates a composite surfactant system by combining polyglyceryl fatty acid diesters and triesters with specific chain lengths and glycerol unit numbers, achieving synergistic effects that resolve the contradiction between biodegradability and cleansing performance
2Object-affected harmful factors
If polyglyceryl fatty acid esters with less than 10 glycerol units are used as surfactants, then biodegradability is improved, but stability and makeup removability deteriorate
Solution Approach 1:
The patent optimizes multiple parameters simultaneously: glycerol unit number (2-9), fatty acid chain length (12-22 carbons), and HLB value (8.0-11.0), thereby transforming the surfactant properties to achieve both high biodegradability and product stability
Solution Approach 2:
The patent applies different structural characteristics to different parts of the surfactant molecule: the hydrophobic fatty acid chain provides stability and cleansing power, while the controlled hydrophilic polyglycerol head (with 2-9 units) ensures biodegradability and appropriate HLB balance
3Object-affected harmful factors
If polyglyceryl fatty acid esters with less than 10 glycerol units are used as surfactants, then biodegradability is improved, but makeup removability and comfortable feeling deteriorate
Solution Approach 1:
The patent transforms the surfactant properties by optimizing the HLB value to 8.0-11.0 and controlling glycerol unit number (2-9), thereby achieving sufficient makeup removability and comfortable skin feeling while maintaining high biodegradability
Solution Approach 2:
The patent optimizes the fatty acid chain length (12-22 carbons) to balance the hydrophobic and hydrophilic properties, ensuring effective makeup removal through appropriate lipophilicity while maintaining biodegradability
Data Source
AI summary
The present invention relates to a composition, preferably a cosmetic composition, and more preferably a cleansing composition, comprising: (a) at least one polyglyceryl fatty acid diester and/or at least one polyglyceryl fatty acid triester; (b) at least one polyglyceryl fatty acid monoester; and (c) at least one oil, wherein the ingredients (a) and (b) comprise a fatty acid moiety with 6 to 22 carbon atoms, preferably 7 to 20 carbon atoms, and more preferably 8 to 18 carbon atoms, and 10 or less glycerol units, preferably 8 or less, and more preferably 6 or less, and the average HLB value of the ingredients (a) and (b) ranges from 8.0 to 11.0, preferably from 8.5 to 10.5, and more preferably from 9.0 to 10.0. The composition according to the present invention is stable and can provide sufficient makeup removability and a comfortable feeling just after being rinsed off.