Amide Alcohol and Polymer Complex Emulsifier
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Solution Overview
Problem
Current emulsification methods struggle to achieve stable emulsions with a wide range of oils, often requiring complex and iterative processes, and existing emulsifiers can cause skin irritation or stickiness, while lacking in usability and stability.
Innovation Solution
A method involving the combination of an amide alcohol and a carboxyl group-containing polymer, where the amide alcohol forms a complex with the polymer, allowing for effective emulsification without the need for additional surfactants, resulting in stable and usable emulsions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional surfactants (ionic or nonionic) are used as emulsifiers, then emulsion can be prepared, but the process requires complicated selection based on required HLB and trial-and-error repetition to achieve stability
Solution Approach 1:
The invention changes the chemical structure parameters of the emulsifier by introducing a specific polyoxyethylene chain length range (5-20 moles) and combining hydrophilic and lipophilic groups in a defined structure. This parameter optimization allows the single surfactant to effectively emulsify oils with various polarities without requiring complex HLB calculations or trial-and-error processes
Solution Approach 2:
The invented surfactant structure with balanced hydrophilic-lipophilic properties can universally emulsify oils across a wide range of required HLB values (3-16). The polyoxyethylene chain length of 5-20 moles provides sufficient adaptability to handle different oil types, making the emulsifier multi-functional and eliminating the need for multiple specialized surfactants
2Adaptability or versatility
If alkanolamide of oleic acid and anionic surfactant are used as emulsifier, then emulsifying power for wide range of required HLB is achieved, but high irritation to skin occurs
Solution Approach 1:
The invention optimizes the local chemical environment at the skin interface by selecting milder surfactant components. The nonionic character of the polyoxyethylene chain and the specific fatty acid ester structure reduce direct irritation to skin while maintaining emulsifying effectiveness, creating a locally gentle formulation that preserves skin comfort
3Adaptability or versatility
If amphoteric surfactant and higher fatty acid complex is used, then emulsifying power is achieved, but odor of oxidative degradation and stickiness from active agent occur
Solution Approach 1:
The invention extracts and eliminates the problematic higher fatty acid component that causes oxidative degradation odor and stickiness. Instead, it uses a carefully designed nonionic surfactant structure with polyoxyethylene chains that provides equivalent emulsifying power without the harmful byproducts, effectively removing the harmful factors while preserving the beneficial emulsifying function
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
This approach enables the creation of stable emulsions with a wide range of oils, improving usability and reducing skin irritation, as the complex formed between the amide alcohol and carboxyl group-containing polymer provides excellent emulsifying power without the use of surfactants.
Implementation Method 1
an amide alcohol and a polymer containing a carboxyl group are bonded
Data Source
AI summary
[Problem] An object of the invention is to provide a novel complex that can be used as an emulsifier.[Solving means] A complex in which an amide alcohol and a carboxyl group-containing polymer exerts an excellent emulsifying power for oil having a wide range of required HLB.