Oil-Based Solid Composition Stability via Acrylic Polymer Mediator
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Solution Overview
Problem
Oil-based solid compositions for external use often experience separation when a polyhydric alcohol is used as a dispersant, leading to instability in the formulation.
Innovation Solution
Incorporating an acrylic acid-based water-soluble polymer into the oil-based solid composition, which includes an oily component with a melting point of 55° C. or higher and a polyhydric alcohol, to suppress separation and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a polyhydric alcohol is used as a dispersant in oil-based solid composition, then active components can be dispersed, but the formulation experiences separation and becomes unstable
Solution Approach 1:
The patent introduces an acrylic acid-based water-soluble polymer as an intermediary substance that mediates between the polyhydric alcohol dispersant and the oily component. This polymer forms a stable complex with both the polyhydric alcohol and the oily component, preventing separation while maintaining dispersant functionality. The polymer acts as a bridge that connects the hydrophilic dispersant with the hydrophobic oil phase, resolving the compatibility issue.
Solution Approach 2:
The patent creates a composite formulation by combining three components: the oily component, the polyhydric alcohol dispersant, and the acrylic acid-based water-soluble polymer. This composite structure leverages the complementary properties of each component - the dispersant capability of the polyhydric alcohol, the stability-enhancing effect of the polymer, and the oil-phase compatibility of the oily component - to achieve both effective dispersion and formulation stability.
2Device complexity
If the selection of components in oil-based formulations is limited, then formulation simplicity is maintained, but the ability to control properties is reduced
Solution Approach 1:
The patent expands the component selection by introducing the acrylic acid-based water-soluble polymer as a new parameter dimension in the formulation. This addition provides extra control over formulation properties such as stability, viscosity, and dispersion characteristics, while maintaining relative simplicity through the use of a straightforward three-component system rather than complex multi-component 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 addition of the acrylic acid-based water-soluble polymer significantly improves the stability of the oil-based solid composition, preventing separation and ensuring a consistent product.
Implementation Method 1
an acrylic acid-based water-soluble polymer is added to an oil-based solid composition for external use, which has been pre-dissolved in a liquid phase and dispersed, to suppress separation
Data Source
AI summary
To provide an oil-based solid composition for external use having excellent stability. An oil-based solid composition for external use is prepared that comprises: (A) an oily component with a melting point of 55° C. or higher; (B) a polyhydric alcohol; and (C) an acrylic acid-based water-soluble polymer.