Saccharide Siloxane Copolymer Emulsification Stability

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Solution Overview

Problem

Existing saccharide siloxanes lack effective emulsification properties for personal care compositions, particularly in water-in-oil emulsions, leading to instability and reduced performance in hair and skin applications.

Innovation Solution

A saccharide siloxane copolymer with a specific molecular structure, including a saccharide component covalently bonded to an organosiloxane backbone, is developed, which acts as a universal emulsifier for water-in-oil emulsions, enhancing stability and performance in personal care products.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing saccharide siloxanes are used in personal care compositions, then they provide basic conditioning and smoothing effects, but they lack effective emulsification properties leading to instability in water-in-oil emulsions

Engineering Contradiction:

Improveemulsification stabilityVSAvoidemulsification capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent creates a composite saccharide siloxane copolymer combining saccharide units (providing hydrophilic character) with organosiloxane backbone (providing hydrophobic character and conditioning properties). This composite structure enables the molecule to simultaneously perform emulsification and hair/skin conditioning functions, resolving the contradiction between emulsification capability and versatility by integrating multiple functions into a single copolymer architecture.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The copolymer structure features localized saccharide components attached at specific positions (terminal or pendant) on the siloxane backbone, creating regions of different hydrophilicity. This local quality variation within the molecule enables effective emulsification at the interface while maintaining conditioning properties in the hydrophobic regions, thus improving emulsification stability without sacrificing versatility.

Inventive Principle:

Principle #3Local quality

2Reliability

If additional emulsifiers are added to improve emulsification, then emulsion stability improves, but product complexity and formulation cost increase

Engineering Contradiction:

Improveemulsion stabilityVSAvoidformulation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The saccharide siloxane copolymer is designed to perform multiple functions simultaneously: it acts as an emulsifier for water-in-oil emulsions, provides hair and skin conditioning, and maintains formulation stability. This multi-functionality eliminates the need for separate emulsifier additives, reducing formulation complexity while maintaining emulsion stability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the functions of emulsification and conditioning into a single copolymer molecule. By combining the emulsifying saccharide components with the conditioning organosiloxane backbone, the formulation requires fewer separate ingredients, simplifying the overall product complexity while achieving both emulsion stability and performance benefits.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS9192564B2Saccharide siloxane copolymers and methods for their preparation and use

Publication Date: 2015.11.24 DOW SILICONES CORP

AI summary

A novel saccharide siloxane copolymer is useful in personal care compositions. The saccharide siloxane copolymer may be used as a universal emulsifier to prepare low odor emulsions for personal care applications.