AMPS Polymer and Polysaccharide Cosmetic Composition
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Solution Overview
Problem
Two-phase or bi-phase cosmetic products require frequent shaking before use due to their unstable nature, which can be inconvenient for consumers.
Innovation Solution
A composition comprising an oil phase, an aqueous phase with crosslinked or non-crosslinked acrylamido-2-methylpropanesulfonic acid (AMPS) homopolymer, and a polysaccharide derived from microorganisms, which transforms into a single phase upon mixing and maintains stability for an extended period without re-mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a two-phase cosmetic product is formulated to maintain distinct phases, then the appearance is eye-catching and both water-soluble and oil-soluble ingredients can be incorporated, but the product requires frequent shaking before use which is inconvenient
Solution Approach 1:
The patent changes the chemical parameters of the aqueous phase by introducing a specific polymer system (acrylamido-2-methylpropanesulfonic acid polymer) with controlled molecular weight and concentration. This parameter change enables the aqueous phase to actively interact with and stabilize the oil phase, transforming the product from requiring frequent shaking to maintaining a stable single phase or slowly separating phases that do not require shaking.
Solution Approach 2:
The patent uses a composite material system consisting of the acrylamido-2-methylpropanesulfonic acid polymer combined with specific oils and water. This composite material creates a unique rheological profile where the polymer network structures the aqueous phase to interact with oil droplets, providing long-term stability without requiring mechanical mixing before use.
2Reliability
If a two-phase composition is designed to transform into a single phase when mixed, then it provides consistent performance, but it may transform back into two phases over time requiring re-mixing
Solution Approach 1:
The patent applies preliminary action by pre-forming the aqueous phase with the acrylamido-2-methylpropanesulfonic acid polymer at specific concentrations (0.1-5% by weight) before product use. This preliminary preparation creates a polymer network structure in the aqueous phase that is ready to interact with and stabilize oil phases, ensuring that when the product is mixed, it forms a stable single phase that maintains consistency for extended periods without transforming back.
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 remains stable as a single phase for several days, eliminating the need for frequent shaking and ensuring consistent product performance and user convenience.
Implementation Method 1
at least one crosslinked or non-crosslinked acrylamido-2-methylpropanesulfonic acid (AMPS) homopolymer
Implementation Method 2
at least one polysaccharide derived from microorganisms
Implementation Method 3
capable of transforming into a single phase composition, and preferably a single phase O/W composition
Implementation Method 4
an oil phase comprising (a) at least one oil, and an aqueous phase comprising
Data Source
AI summary
The present invention relates to a two-phase composition comprising an oil phase comprising (a) at least one oil, and an aqueous phase comprising: (b) at least one crosslinked or non-crosslinked acrylamido-2-methylpropanesulfonic acid (AMPS) homopolymer; (c) at least one polysaccharide derived from microorganisms; and (d) water. The composition according to the present invention has two visually distinct phases, can transform into a single phase composition when being mixed, and can maintain the single phase for a long period of time without mixing.