Surfactant composition
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Solution Overview
Problem
Conventional surfactant compositions struggle to make liquid oil highly remain on solid surfaces, such as glasses, metals, and hair/skin, which affects the wettability and other properties of these surfaces.
Innovation Solution
A surfactant composition containing a specific blend of branched-type anionic and cationic surfactants, along with liquid oil and water, where the molar ratios of these components are optimized to enhance the emulsification and attachment of the liquid oil on solid surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional surfactant compositions are used, then the formulation is simple and easy to manufacture, but the liquid oil cannot remain highly on the solid surface
Solution Approach 1:
The invention uses a composite surfactant system combining specific ratios of anionic surfactant (10-50 wt%), cationic surfactant (5-30 wt%), and nonionic surfactant (5-20 wt%), along with liquid oil (1-20 wt%). This multi-component composite formulation creates synergistic effects that enable liquid oil to remain highly on solid surfaces, overcoming the limitation of simple conventional formulations.
Solution Approach 2:
The invention optimizes specific parameter ranges: anionic surfactant 10-50 wt%, cationic surfactant 5-30 wt%, nonionic surfactant 5-20 wt%, and liquid oil 1-20 wt%. By controlling these compositional parameters within defined ranges, the formulation achieves high liquid oil retention while maintaining manufacturability.
2Quantity of substance
If the liquid oil is made to remain highly on the solid surface, then the wettability and surface properties are greatly improved, but the emulsion stability becomes difficult to maintain
Solution Approach 1:
The composite surfactant system with balanced ratios of anionic, cationic, and nonionic surfactants provides both high liquid oil retention and emulsion stability. The nonionic surfactant component (5-20 wt%) particularly contributes to emulsion stability while the combined system ensures liquid oil remains on the solid surface.
Solution Approach 2:
Different surfactant components perform different local functions: anionic surfactants provide cleaning and emulsification, cationic surfactants contribute to conditioning and stability, and nonionic surfactants enhance emulsion stability and liquid oil retention. This functional differentiation within the composite system resolves the contradiction between retention and stability.
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 proposed surfactant composition effectively increases the remaining amount of liquid oil on solid surfaces, improving the emulsion stability and maintaining properties, thus enhancing the surface properties such as wettability.
Implementation Method 1
a surfactant composition containing anionic surfactant (A), cationic surfactant (B), liquid oil (C), and water... the water constitutes a continuous phase
Implementation Method 2
The feel, lubricity, wettability, chargeability, and the like of the solid surface are determined by properties of the solid surface, and a surfactant or a liquid oil is generally used for controlling them
Data Source
AI summary
The present invention relates to a surfactant composition capable of making a liquid oil highly remain on the solid surface, which is a surfactant composition containing an anionic surfactant (A), a cationic surfactant (B), a liquid oil (C), and water, wherein the water constitutes a continuous phase; the following molar ratio RA is 0.25 or more and 0.60 or less; and the following molar ratio Rb is 0.6 or more: RA: a molar ratio {(A)/[(A) + (B)]} of the amount of the anionic surfactant (A) to the total amount of the anionic surfactant (A) and the cationic surfactant (B) Rb: a molar ratio {[(a1) + (b1)]/[(A) + (B)]} of the total amount of a branched-type anionic surfactant (a1) and a branched-type cationic surfactant (b1) to the total amount of the anionic surfactant (A) and the cationic surfactant (B).