Cationic Polysaccharide-Anionic Antioxidant Complex for Water-Based Formulations
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Solution Overview
Problem
Existing skin care products face challenges in incorporating sufficient amounts of antioxidants due to their limited solubility in water, which hampers their effectiveness in preventing skin aging caused by free radicals from UV exposure and environmental pollution.
Innovation Solution
A composition comprising a cationic polysaccharide and an anionic antioxidant, where the antioxidant has negatively chargeable moieties, forms a complex with the cationic polysaccharide, allowing for a higher concentration of antioxidants in a water-based formulation, enhancing anti-oxidation effects and uniform distribution on the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antioxidants are added to water-based skin care products, then anti-oxidation effects are improved, but solubility limitation prevents sufficient incorporation of antioxidant
Solution Approach 1:
The patent combines cationic polysaccharide and anionic antioxidant to form a complex composition. The cationic polysaccharide with positive charges interacts with the anionic antioxidant with negative charges, creating a stable composite structure that enhances antioxidant solubility and stability in water-based formulations, allowing higher antioxidant incorporation
Solution Approach 2:
The patent changes the chemical parameters of the antioxidant by selecting compounds with negatively chargeable moieties (sulfate, sulfonate, phosphate, carboxylate groups). This parameter change enables electrostatic interaction with cationic polysaccharide, improving water solubility and stability of the antioxidant in the composition
2Reliability
If more antioxidant is incorporated into the composition, then anti-oxidation effects are enhanced, but uniform distribution on skin becomes difficult due to solubility limitations
Solution Approach 1:
The cationic polysaccharide-antioxidant complex forms a stable composite that prevents aggregation and precipitation of antioxidant molecules. This composite structure ensures uniform distribution of antioxidant throughout the water-based formulation and on the skin surface, maintaining compositional stability even at higher antioxidant concentrations
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 enhanced anti-oxidation effects, improved skin protection against UV irradiation and environmental pollutants, and effective emulsification of oils, leading to a more stable and protective skin care product.
Implementation Method 1
a composition comprising: (a) at least one cationic polysaccharide; (b) at least one antioxidant; and (c) water, wherein the (b) antioxidant has at least one negatively chargeable and/or negatively charged moiety
Data Source
AI summary
The present invention relates to a composition comprising: (a) at least one cationic polysaccharide; (b) at least one antioxidant; and (c) water, wherein the (b) antioxidant has at least one negatively chargeable and/or negatively charged moiety selected from the group consisting of a sulfuric group, a sulfate group, a sulfonic group, a sulfonate group, a phosphoric group, a phosphate group, a phosphonic group, a phosphonate group, a phenolic hydroxyl group, a carboxylic group, and a carboxylate group. The composition according to the present invention can include a relatively larger amount of antioxidant.