Temperature-Stable Cosmetic Emulsions Without Acrylate Polymers
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Solution Overview
Problem
Existing cosmetic emulsions face challenges in achieving low stickiness and temperature stability against clump formation at low temperatures without using acrylate-based polymers, which are increasingly criticized for unclear biodegradability.
Innovation Solution
A cosmetic emulsion comprising an emulsifier system that forms a liquid-crystalline network, combined with hydroxypropyl starch phosphate and/or Distarch Phosphate, and Gellan Gum, replaces acrylate-based polymers, ensuring low stickiness and temperature stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acrylate-based polymers are used to stabilize O/W emulsions, then temperature stability and protection against flocs or clumps are improved, but biodegradability becomes unclear and environmental concerns increase
Solution Approach 1:
The patent changes the chemical composition parameters by replacing acrylate-based polymers with a combination of biodegradable polymers (xanthan gum, guar gum, sclerotium gum) and specific emulsifiers. This parameter change maintains temperature stability while improving biodegradability, directly resolving the contradiction between reliability and environmental harm.
Solution Approach 2:
The patent uses a composite emulsion system combining multiple biodegradable polymers (xanthan gum, guar gum, sclerotium gum) with specific emulsifiers (glyceryl stearate, cetearyl glucoside, sorbitan stearate). This composite approach achieves the temperature stability previously provided by acrylates while ensuring biodegradability, thus resolving the contradiction between reliability and environmental harm.
2Reliability
If short-chain diols are used to improve temperature stability, then stability against flocs or clumps is improved, but stickiness of the formulation increases
Solution Approach 1:
The patent changes the composition parameters by completely excluding short-chain diols and instead using a specific combination of biodegradable polymers and emulsifiers. This parameter change achieves temperature stability without the stickiness side effect, directly resolving the contradiction between reliability and harmful stickiness.
Solution Approach 2:
The patent extracts and removes short-chain diols from the formulation entirely, replacing their stabilizing function with a combination of biodegradable polymers and specific emulsifiers. This extraction eliminates the stickiness problem while maintaining temperature stability, resolving the contradiction between reliability and harmful stickiness.
3Object-affected harmful factors
If individual biopolymers or different combinations are used to replace acrylates, then biodegradability is improved, but temperature stability or stickiness becomes inadequate
Solution Approach 1:
The patent employs a composite system combining three specific biodegradable polymers (xanthan gum, guar gum, sclerotium gum) with specific emulsifiers (glyceryl stearate, cetearyl glucoside, sorbitan stearate) in defined proportions. This composite approach overcomes the limitations of individual biopolymers, achieving both biodegradability and adequate temperature stability, thus resolving the contradiction between biodegradability and reliability.
Solution Approach 2:
The patent creates a multi-functional emulsion system where the combination of biodegradable polymers and specific emulsifiers simultaneously provides biodegradability, temperature stability, and appropriate texture. This multi-functional approach resolves the contradiction by making a single formulation that achieves multiple goals that individual biopolymers could not achieve alone.
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 emulsion maintains stability and reduces clump formation at low temperatures, even without short-chain diols, while minimizing stickiness, thus addressing the limitations of acrylate-based polymers.
Implementation Method 1
an emulsifier system which forms a liquid-crystalline network in the emulsion
Implementation Method 2
the formulations are well protected against formation of flocs and/or clumps when stored for relatively long periods for example for 30 days at −10° C.
Data Source
AI summary
The invention relates to a cosmetic emulsion.