Gel Polish Thinner Viscosity Reduction and UV LED Compatibility
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Solution Overview
Problem
Radiation-curable gel polishes thicken over time, becoming more viscous and difficult to apply, leading to defects in finish and limited shelf life, and are not compatible with UV LED curing lamps, which are faster than UV CFL lamps.
Innovation Solution
A gel polish thinner composition containing a monomer, photoinitiator, and specific chemical compounds like hydroxyethyl methacrylate and 2,4,6-trimethylbenzoyldiphenylphosphine oxide, which reduces viscosity and allows UV-curable gels to cure under UV LED light, maintaining original curing time and extending product life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gel polish is stored in containers over time, then the gel polish cures and provides durable finish, but the gel polish becomes more viscous and difficult to apply
Solution Approach 1:
The patent introduces a thinner composition that changes the viscosity parameter of the gel polish by adding monomers and oligomers. This allows the gel polish to maintain optimal viscosity for application while preserving its curing properties and durability, effectively decoupling the viscosity increase from the aging process.
2Reliability
If conventional UV CFL lamps are used to cure gel polish, then the gel polish cures properly, but the curing time is longer compared to UV LED lamps
Solution Approach 1:
The patent modifies the photoinitiator system by incorporating types that are responsive to both UV CFL and UV LED wavelengths. This parameter change in the photoinitiator composition enables the gel polish to cure effectively under UV LED lamps, significantly reducing curing time while maintaining curing effectiveness.
3Reliability
If gel polish formulation is optimized for UV CFL lamps, then the gel polish cures well under UV CFL, but it is not compatible with UV LED lamps for faster curing
Solution Approach 1:
The patent creates a universal gel polish formulation that functions with both UV CFL and UV LED lamps by incorporating a combination of photoinitiators sensitive to different UV wavelengths. This multi-functional approach allows the same gel polish to be cured effectively by either lamp type, providing versatility and enabling faster curing when UV LED lamps are available.
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 thinner significantly reduces viscosity, enabling easier application and extending the life of gel polishes while enabling faster curing times under UV LED lamps, converting UV CFL-curable gels to UV LED-curable gels, thus improving application consistency and curing efficiency.
Implementation Method 1
Radiation-curable gel systems for manicures and pedicures... Under a ultra-violet radiation (UV) or light emitting diode (LED) light, gel polishes can cure in minutes
Implementation Method 2
A composition for a thinning agent to reduce the viscosity of a traditional gel or gel polish includes at least one monomer... The thinner can reduce the viscosity of a gel polish that has thickened
Data Source
AI summary
A composition for a thinning agent to reduce the viscosity of a traditional gel or gel polish includes at least one monomer and a photoinitiator. The thinner can reduce the viscosity of a gel polish that has thickened, and allow for easy application of the gel to the nails. Aspects of the thinner can cause a ultra-violet curable gel or gel polish, using a ultra-violet light, to cure using a ultra-violet light emitting diode light source, when the thinner is added to the gel. The thinner is versatile and can be added to any gel polish or traditional gel to extend the life of the gel.