Phytosterol Surfactant Solubilizing Triazine UV Agents

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Solution Overview

Problem

Existing cosmetic compositions face difficulties in effectively solubilizing low water-soluble substances, particularly those with high molecular weights and bulky structures, due to the limited solubilizing ability of conventional surfactants like ethoxylated phytosterol, requiring large amounts of surfactants for solubilization.

Innovation Solution

The use of polyoxyethylene-polyoxypropylene-added phytosterol or phytostanol, which exhibits excellent solubilizing and dispersing capabilities for low water-soluble substances, including triazine UV-absorbing agents, by forming a water-containing composition with a specific chemical structure and ratio, allowing for improved solubilization and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If conventional surfactants like ethoxylated phytosterol are used to solubilize low water-soluble substances, then solubilization can be achieved, but a large amount of surfactant is required due to poor solubilizing ability

Engineering Contradiction:

Improveamount of surfactant requiredVSAvoidsolubilizing ability

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The invention changes the chemical structure parameters of the surfactant by introducing polyoxypropylene groups in addition to polyoxyethylene groups. This structural modification fundamentally alters the solubilizing capability, enabling effective solubilization of low water-soluble substances with high molecular weights and bulky structures using much smaller amounts of surfactant compared to conventional ethoxylated phytosterol.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite surfactant structure by combining polyoxyethylene and polyoxypropylene groups with phytosterol or phytostanol. This composite material approach integrates the solubilizing benefits of both polymer types, producing a surfactant with superior solubilizing ability that overcomes the limitations of single-component surfactants.

Inventive Principle:

Principle #40Composite materials

2Quantity of substance

If much larger amounts of surfactant are used to solubilize sufficient low water-soluble substance, then solubilization capacity increases, but the composition becomes less favorable for external use

Engineering Contradiction:

Improvesolubilization capacityVSAvoidfavorability for external use

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

By modifying the surfactant structure to include polyoxypropylene groups, the invention achieves high solubilization capacity at low surfactant concentrations. This parameter change in surfactant efficiency directly improves ease of operation by eliminating the need for large surfactant amounts that would compromise external use favorability.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If low water-soluble substances with high molecular weight and bulky structure are used, then functional performance is improved, but solubilization difficulty increases significantly

Engineering Contradiction:

Improvefunctional performanceVSAvoidsolubilization difficulty

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The invention changes the surfactant's molecular parameters by adding polyoxypropylene groups, which enhances its ability to interact with high molecular weight and bulky low water-soluble substances. This structural modification enables effective solubilization of substances that are otherwise difficult to incorporate, maintaining functional performance while reducing solubilization difficulty.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The modified surfactant acts as an intermediary that bridges the incompatibility between water and high molecular weight low water-soluble substances. The polyoxypropylene groups provide enhanced interaction with bulky hydrophobic structures, facilitating their incorporation into water-based compositions without requiring extreme surfactant concentrations.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 efficient solubilization of low water-soluble substances, maintaining stability over time and providing a favorable application sensation, even at high temperatures, while minimizing surfactant usage.

Implementation Method 1

a low water-soluble substance is solubilized by use of a surfactant such as polyoxyethylene alkyl ether or polyoxyethylene hydrogenated castor oil

Methodology Applied

Scientific EffectSolubilization: Surfactant

Data Source

PatentEP2226066B1Water-containing composition comprising a solubilised triazine

Publication Date: 2016.05.04 SHISEIDO CO LTD

AI summary

An object of the present invention is to provide means for enhancing ability to solubilize a low water-soluble substance or to disperse the substance in water. The present invention provides a water-containing composition containing water; at least one polyoxyethylene-polyoxypropylene-added phytosterol or phytostanol represented by the following formula (1): [F1] [wherein R represents a phytosterol residue or a phytostanol residue; m is a number from 5 to 100; and n is a number from 5 to 100]; and at least one low water-soluble substance which is in a dissolved state.