Aqueous Polyamine Surfactant Phosphate Ester System for Clear Water-Insoluble Delivery

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Solution Overview

Problem

Water-insoluble ingredients are difficult to incorporate into aqueous systems like shampoos and conditioners, leading to poor performance and minimal presence due to issues such as poor spreadability, foaming, and removal difficulties, and they suppress lathering, making clear aqueous delivery systems challenging for treating keratinous substrates.

Innovation Solution

Aqueous composition combining a polyamine compound with at least three amino groups, a nonionic surfactant, and a phosphate ester, which allows for the incorporation of water-insoluble materials while maintaining a clear and homogeneous appearance, using a combination of alkoxylated alkyl phosphate esters and alkyl phosphate esters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If water-insoluble ingredients are incorporated into aqueous systems, then the effectiveness of treating keratinous substrates is improved, but the system forms traditional emulsions with poor spreadability and foaming performance

Engineering Contradiction:
Improveeffectiveness of treating keratinous substratesVSAvoidspreadability and foaming performance
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent uses a specialized aqueous system comprising polyamine compounds, nonionic surfactants, and phosphate esters as intermediary components that mediate between water-insoluble ingredients and the aqueous environment. This mediator system enables water-insoluble materials to be incorporated without forming traditional emulsions, maintaining good spreadability and foaming performance while delivering the beneficial effects of water-insoluble ingredients to keratinous substrates.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If water-insoluble ingredients are used in aqueous systems, then treatment effectiveness is improved, but lathering is suppressed making the system less desirable

Engineering Contradiction:
Improvetreatment effectivenessVSAvoidlathering suppression
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical parameters of the aqueous system by incorporating specific polyamine compounds with at least three amino groups and phosphate esters in optimized concentrations. These parameter changes modify the interaction between water-insoluble ingredients and the aqueous environment, enabling effective treatment while preserving lathering properties and eliminating the harmful effect of lathering suppression.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If water-insoluble materials are incorporated into aqueous solutions, then treatment efficacy is improved, but the system becomes heterogeneous and opaque

Engineering Contradiction:
Improvetreatment efficacyVSAvoidhomogeneity and clarity
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent employs a specialized intermediary aqueous system comprising polyamine compounds, nonionic surfactants, and phosphate esters that acts as a mediator between water-insoluble materials and the aqueous phase. This intermediary system enables homogeneous distribution and clear appearance while maintaining treatment efficacy, preventing the formation of heterogeneous and opaque mixtures.

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

Enables the effective delivery of water-insoluble ingredients to keratinous substrates, providing improved conditioning properties and maintaining a clear appearance without the need for alcohol, suitable for various personal care and pharmaceutical applications.

Implementation Method 1

at least one nonionic surfactant

Methodology Applied
Scientific EffectSurfactant action: Surfactant

Implementation Method 2

aqueous system based on a combination of at least one polyamine compound having at least three amino groups, at least one nonionic surfactant, and at least one phosphate ester

Methodology Applied
Scientific EffectMolecular interaction: Chemical Bonding

Data Source

PatentUS7955606B2Aqueous systems containing polyamine, surfactant and phosphate ester for water-insoluble materials
Publication Date: 2011.06.07 LOREAL SA

AI summary

The present invention is drawn to a aqueous composition containing: (a) at least one polyamine compound having at least three amino groups; (b) at least one nonionic surfactant; (c) at least one phosphate ester chosen from alkoxylated alkyl phosphate esters and alkyl phosphate esters; and (d) at least one water-insoluble material, and wherein the composition is both homogeneous, and clear to substantially clear in appearance.