Gemini Surfactant Emulsion with Superabsorbent Polymer
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Solution Overview
Problem
Gemini surfactants used in oil-in-water emulsions result in compositions that are heavy, poorly spreadable, and quickly absorbed, leading to a negative application experience on the skin, lacking freshness and causing a coarse, dragging effect.
Innovation Solution
Combining a gemini surfactant with a superabsorbent polymer, specifically crosslinked sodium polyacrylates, to create an emulsion with a soft, non-tacky texture that maintains glidance and freshness on the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gemini surfactants are used in O/W emulsions, then good emulsifying properties and low surface tension are achieved, but the composition becomes heavy, spreads poorly, and causes a coarse dragging effect on the skin
Solution Approach 1:
The patent combines gemini surfactants with superabsorbent polymers to create a composite cosmetic composition. This composite approach allows the gemini surfactant to provide excellent emulsifying properties while the superabsorbent polymer modifies the rheological behavior to eliminate the heavy, dragging effect, achieving both good emulsification and pleasant application feel
Solution Approach 2:
The invention changes the rheological parameters of the O/W emulsion by incorporating superabsorbent polymers. This modification alters the flow and spreading characteristics of the composition, transforming it from a heavy, poorly spreadable formulation to one that applies smoothly and evenly on the skin
2Reliability
If gemini surfactants are used in O/W emulsions, then good emulsifying properties are achieved, but the composition is absorbed too quickly and lacks freshness
Solution Approach 1:
By creating a composite system with superabsorbent polymers, the formulation achieves a balance between quick absorption and prolonged freshness. The superabsorbent polymer component provides sustained moisture retention that extends the fresh feeling on the skin without compromising the excellent emulsifying properties of the gemini surfactant
3Reliability
If gemini surfactants are used in O/W emulsions, then low surface tension and good wetting properties are achieved, but a coarse dragging effect is observed on the skin
Solution Approach 1:
The patent modifies the rheological parameters of the emulsion by adding superabsorbent polymers, which changes the texture and flow characteristics. This parameter change eliminates the coarse dragging effect while preserving the excellent wetting properties provided by the gemini surfactant, resulting in a smooth application feel
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 composition achieves a uniform, soft application and penetration without a dragging effect, providing improved cosmetic properties such as enhanced glidance and skin friendliness.
Implementation Method 1
a polymer that is capable in its dry form of spontaneously absorbing at least 20 times its own weight of aqueous fluid, in particular of water
Implementation Method 2
these surfactants have a very low surface tension, and they have good emulsifying properties for the preparation of oil-in-water (O/W) emulsions
Implementation Method 3
they are excellent wetting agents
Data Source
AI summary
The present invention relates to a cosmetic composition in the form of an emulsion comprising at least one aqueous phase and at least one fatty phase, at least one superabsorbent polymer and at least one surfactant of Formula (I) : in which: R1 and R3 denote, independently of each other, an alkyl radical containing from 1 to 25 carbon atoms; R2 denotes a spacer formed from a linear or branched alkylene chain containing from 1 to 12 carbon atoms; X and Y denote, independently of each other, a group - (C2H4O) a- (C3H6O) bZ in which ° Z denotes a hydrogen atom or a radical -CH2-COOM, -SO3M, -P(O) (OM)2, C2H4-SO3M, -C3H6-SO3M or CH2(CHOH)4CH2OH, in which M, M' represent H or an alkali metal, alkaline-earth metal, ammonium or alkanolammonium ion, ° a ranges from 0 to 15, ° b ranges from 0 to 10, and ° the sum of a + b ranges from 1 to 25; and - n ranges from 1 to 10.