Polyester Copolymer Resin for Anhydrous Nail Polish
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Solution Overview
Problem
Current nail polishes face challenges in achieving easy application, rapid drying, long-lasting wear, and high shine retention while also being environmentally friendly, with existing formulations often relying on petrochemical-derived ingredients.
Innovation Solution
The use of a polyester copolymer composed of citric acid, propylene glycol, succinic acid, and lauric acid as a resin in anhydrous cosmetic compositions, which provides stickiness, long-lasting wear, and shine, and is derived from renewable natural sources, combined with solvents, film formers, plasticizers, and additives to enhance performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If petrochemical-derived resins are used to achieve good application and shine, then the formulation performance is improved, but the environmental friendliness deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters by replacing petrochemical-derived resins with renewable monomers (citric acid, propylene glycol, succinic acid, and lauric acid). This substitution maintains the resin's functional properties (stickiness, shine, wear resistance) while altering the source material to be environmentally friendly and renewable
Solution Approach 2:
The patent creates a composite resin system by copolymerizing multiple renewable monomers (citric acid, propylene glycol, succinic acid, and lauric acid) to form a polyester copolymer. This composite approach combines the advantages of each monomer to achieve the desired performance characteristics while maintaining environmental compatibility
2Reliability
If conventional resins are used to provide stickiness and wear resistance, then the durability is improved, but the reliance on non-renewable resources worsens
Solution Approach 1:
The patent changes the source parameter of the resin from non-renewable petrochemicals to renewable natural monomers. The polyester copolymer derived from citric acid, propylene glycol, succinic acid, and lauric acid provides equivalent or superior wear resistance and durability while being sourced entirely from renewable resources
3Illumination intensity
If pigments are added to create colored formulations, then the aesthetics are improved, but the shine retention deteriorates
Solution Approach 1:
The patent modifies the resin parameters (using polyester copolymer with specific monomer composition and residual acidity of 45-55 mg KOH/g) to counterbalance the shine-reducing effect of pigments. The specific chemical structure and acidity of the renewable resin enhance shine retention even in the presence of coloring pigments
Data Source
AI summary
The invention relates to the use of a polyester that is a copolymer of citric acid, propylene glycol, succinic acid and lauric acid and is used as a resin in an anhydrous cosmetic composition which can be applied to nails, as well as to anhydrous cosmetic compositions for nail polish, comprising a copolymer resin of citric acid, propylene glycol, succinic acid and lauric acid.