Solid Soap Foam Properties via Cationic Polymer and PEG
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Solution Overview
Problem
Solid transparent soaps with high polyol content suffer from deteriorated foaming and foam properties due to reduced fatty acid salt percentages, affecting their cleansing efficacy.
Innovation Solution
Incorporating a specific cationic polymer, dimethyldiallylammonium chloride/acrylamide polymer, and high-molecular polyethylene glycol into the soap formulation, with optimal blending quantities to enhance foam properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a large amount of polyols is added as crystallization inhibitor, then transparency is improved, but foaming property deteriorates
Solution Approach 1:
A water-soluble polymer is introduced as an intermediary substance that mediates between the polyol crystallization inhibitor and the fatty acid salt. This polymer allows high polyol content (30-70 mass%) to be maintained for transparency while preventing the deterioration of foaming properties by acting as a buffer or stabilizing agent in the formulation.
Solution Approach 2:
The invention creates a composite formulation combining fatty acid salts, polyols, and water-soluble polymers. This composite material system allows the beneficial effects of high polyol content (transparency) to coexist with maintained foaming properties through the synergistic interaction of multiple components.
2Stability of the object's composition
If polyol content is increased for transparency, then crystallization is inhibited, but fatty acid salt percentage decreases
Solution Approach 1:
The water-soluble polymer serves as an intermediary that enables higher polyol content (30-70 mass%) to be incorporated without proportionally reducing fatty acid salt content. The polymer appears to facilitate better compatibility or stabilization, allowing a more balanced composition where both polyol and fatty acid salt can coexist in optimal proportions.
Data Source
AI summary
[Problem] The problem to be solved by the present invention is to improve the foam properties of fatty acid soap. [Means of solving] A solid soap comprising 20 to 70 mass% of fatty acid soaps, wherein the solid soap comprises dimethyldiallylammonium chloride/acrylamide polymer and a high-molecular polyethylene glycol.