Renewable Polyol UV-Curable Nail Coatings
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Solution Overview
Problem
There is a lack of environmentally friendly nail coating compositions in the market that offer properties comparable to or superior to existing commercial radiation-curable nail coatings, particularly in terms of sustainability and performance.
Innovation Solution
A photopolymerizable composition for nail coatings comprising a photoinitiator and (meth)acrylate monomers or oligomers derived from renewable resources, such as sucrose and resorcinol, which cure under UV radiation or natural light to form a hard, solvent-resistant coating, incorporating additives like pigments and fragrances, and can be designed for improved adhesion and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional acrylic or methacrylic monomers and oligomers are used in UV-curable nail coatings, then the coating achieves good adhesion and durability, but the composition lacks environmental sustainability
Solution Approach 1:
The patent changes the chemical composition parameters by replacing conventional petroleum-based acrylic or methacrylic monomers with renewable resource-based polyols (sucrose and resorcinol derivatives). This substitution maintains the photopolymerizable (meth)acrylate functional groups necessary for curing while changing the base material source from non-renewable to renewable resources, thereby improving environmental sustainability without sacrificing coating performance
Solution Approach 2:
The invention creates composite materials by combining renewable resource polyols with (meth)acrylate monomers and oligomers. The resulting composition integrates the sustainability benefits of bio-based materials with the proven adhesion and durability characteristics of (meth)acrylate chemistry, achieving both environmental and performance goals simultaneously
2Strength
If UV-curable formulations are designed to be hard and solvent-resistant, then wear performance improves, but removal becomes more difficult
Solution Approach 1:
The patent applies partial solvent resistance by designing a coating that is solvent-resistant during wear to provide durability, but can be partially removed with solvents when needed. The formulation achieves this balance by creating a crosslinked network that resists degradation under normal conditions but can be broken down with appropriate solvent exposure and mechanical removal, allowing controlled removal without complete indestructibility
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 provides a hard, solvent-resistant, and durable nail coating with enhanced adhesion and wear performance, while being environmentally friendly and suitable for both natural and artificial nails, with the option to be removed with solvents.
Implementation Method 1
Such compositions are capable of free radical addition or cation cure reactions with unsaturated ethylenic pendant groups on compounds upon exposure to actinic radiation in the presence of a photo initiator
Data Source
AI summary
A photopolymerizable composition for forming a cosmetic coating for natural and artificial nails of humans and animals comprising a photoinitiator and a (meth)acrylate monomer prepared by reacting a core polyol derived or functionalized from a renewable resource with an a (meth)acrylate monomer and coatings formed from such compositions under UV or other radiation.