Water-Based Cosmetic Using Microgel and Silane for Spreadability
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Solution Overview
Problem
Conventional skin cosmetics exhibit poor spreadability and absorption, stickiness, and inadequate dewy freshness and emollient sensations due to issues with emulsification and compatibility of ingredients.
Innovation Solution
A water-based skin cosmetic or oil-in-water emulsified cosmetic formulation incorporating bis-PEG-18 methyl ether dimethyl silane and a microgel thickener, or pentaerythritol distearate with a microgel and emulsifying agent, to enhance spreadability, absorption, and texture without stickiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If solid oils and waxes are blended to enhance emollient sensation and taut sensation, then the cosmetic manifests emollient and taut sensations, but spreadability and absorption into the skin deteriorate and stickiness increases
Solution Approach 1:
The patent changes the molecular structure parameters of the oil component by using bis-PEG-18 methyl ether dimethyl silane instead of conventional solid oils and waxes. This parameter change maintains emollient sensation while improving spreadability and absorption by eliminating the solid crystalline structure that causes poor spreadability and stickiness.
Solution Approach 2:
The patent creates a composite formulation by combining bis-PEG-18 methyl ether dimethyl silane with microgel thickener. This composite material achieves both emollient sensation and good spreadability/absorption, resolving the contradiction between these properties that cannot be achieved with single conventional ingredients.
2Temperature
If solid oils and waxes are blended to enhance emollient sensation and taut sensation, then the cosmetic manifests emollient and taut sensations, but absorption into the skin deteriorates
Solution Approach 1:
The patent changes the physical state parameter of the oil component from solid to liquid by using bis-PEG-18 methyl ether dimethyl silane. This parameter change enables better skin absorption while maintaining emollient sensation, as the liquid structure penetrates skin more effectively than solid oils and waxes.
3Stability of the object's composition
If emulsifying agents are used to blend oil-based ingredients into water-based base, then the cosmetic achieves emulsification, but stickiness increases due to the emulsifying agent
Solution Approach 1:
The patent extracts and eliminates the emulsifying agent from the formulation by using bis-PEG-18 methyl ether dimethyl silane, which is inherently compatible with water-based bases without requiring separate emulsification. This extraction removes the source of stickiness while maintaining stable formulation.
4Temperature
If conventional emulsified formulations are used to achieve moisture-rich sensation, then the cosmetic manifests emollient sensation, but spreadability and absorption deteriorate
Solution Approach 1:
The patent changes the formulation structure from conventional emulsified system to a microgel-based system containing bis-PEG-18 methyl ether dimethyl silane. This parameter change achieves moisture-rich and emollient sensations while maintaining excellent spreadability and absorption, overcoming the limitations of traditional emulsified 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 formulation achieves good spreadability, absorption, and texture with dewy freshness, emollient, and taut sensations, improving user experience by eliminating stickiness and enhancing the permeation of active ingredients.
Implementation Method 1
A water-based skin cosmetic or oil-in-water emulsified skin cosmetic that manifests good spreadability on and absorption into the skin
Implementation Method 2
oil-in-water emulsified skin cosmetic that manifests good spreadability on and absorption into the skin
Data Source
AI summary
The present invention provides a water-based skin cosmetic comprising the following ingredients (A) and (B) : (A) A compound represented by the following formula (I) (In this formula, 1 and m can be either the same or different; each denotes an integer 10-25.) (B) A thickener composed of microgel obtained by using a composition that has an organic solvent or oil component as the dispersion medium and water as the dispersion phase, dissolving a water soluble ethylenically unsaturated monomer in the dispersion phase, and radically polymerizing it in the dispersion phase, wherein said microgel is obtained by radically polymerizing dimethylacrylamide and 2-acrylamido-2-methylpropane sulfonic acid under the conditions in which single phase microemulsion or fine W/0 emulsion is formed by using a surfactant.