UV-Curable Acrylic Nail Composition Without Mixing or Odor
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Solution Overview
Problem
Existing acrylic nail formulations suffer from unpleasant odors, poor cure properties, brittleness, and difficulties in application, particularly in UV-cured systems, while traditional two-part systems face issues with odorless alternatives having poor aesthetics and requiring precise mixing ratios.
Innovation Solution
A photopolymerizable composition comprising 50-60% poly(C1-12 alkyl(meth)acrylate) polymers, 25-35% (meth)acrylate oligomers, 10-15% (meth)acrylate monomers, and crosslinkers, which can be applied directly and cured with UV light, eliminating the need for mixing and providing high viscosity for easy shaping and durable nail coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional two-part acrylic formulation (monomer liquid and polymer powder) is used, then the formulation can be shaped and hardened to form durable nail coating, but the monomer liquid produces offensive odor and requires precise mixing ratios
Solution Approach 1:
The patent extracts the harmful monomer liquid component from the formulation and replaces it with photopolymerizable oligomers and monomers that do not produce offensive odors. The liquid component that causes odor is taken out and substituted with odorless alternatives that still provide the necessary workability and shaping properties.
Solution Approach 2:
The patent changes the chemical parameters of the formulation by using photopolymerizable oligomers with specific functionality ranges (2-30) and controlling the weight percentages of different components. This parameter change allows the formulation to be applied directly without mixing while maintaining durability and eliminating odor.
2Object-generated harmful factors
If odorless systems comprising hydroxyethyl methacrylate and hydroxypropyl methacrylate are used, then the offensive odor is eliminated, but the cure quality and finished aesthetics deteriorate
Solution Approach 1:
The patent uses a composite formulation combining photopolymerizable oligomers (25-35 wt%), photopolymerizable monomers (10-15 wt%), and crosslinkers (5-20 wt%). This composite approach achieves both odor elimination and high cure quality by synergistically combining multiple components with complementary properties.
Solution Approach 2:
The patent optimizes the functionality of oligomers (2-30) and controls the weight percentages of each component to achieve optimal cure quality. The specific parameter ranges selected ensure both odorless operation and excellent cure characteristics with high durability and aesthetics.
3Object-generated harmful factors
If UV-cured two-part powder system is used, then the offensive odor is eliminated, but the formed nail becomes brittle and the system is difficult to work with
Solution Approach 1:
The patent adjusts the functionality of oligomers (2-30) and the weight percentages of crosslinkers (5-20 wt%) to optimize the balance between flexibility and strength. This parameter optimization prevents brittleness while maintaining UV-cure benefits and eliminating odor.
Solution Approach 2:
The patent creates a composite system that combines the benefits of UV-curing (odorless, fast cure) with flexible oligomers and crosslinkers that prevent brittleness. The composite formulation includes components that provide both structural integrity and flexibility.
4Productivity
If traditional two-part acrylic formulation is used, then the formulation can be shaped and hardened, but precise mixing ratios are required which increases complexity
Solution Approach 1:
The patent merges the liquid and powder components into a single one-part photopolymerizable composition. The oligomers, monomers, and crosslinkers are pre-combined in optimal ratios, eliminating the need for separate mixing steps and simplifying the application process while maintaining full functionality.
Solution Approach 2:
The patent performs preliminary mixing and formulation of all components in the correct ratios during manufacturing. This preliminary action ensures that the formulation is ready for direct application without requiring precise mixing by the user, thereby increasing productivity and reducing complexity.
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 offers a one-part, odorless, easy-to-apply solution with excellent adhesion, abrasion resistance, mechanical strength, and self-leveling properties, reducing shrinkage and yellowing, and allowing thicker applications without the need for additional liquids or solvents.
Implementation Method 1
a photopolymerizable composition for forming a cosmetic coating for nails... followed by an exposure to UV light to photopolymerize the composition
Data Source
AI summary
A pot-stable photopolymerizable composition for forming a cosmetic coating for nails comprises a mixture of a poly(alkyl(meth)acrylate powder, (meth)acrylate oligomer, (meth)acrylate monomer, a crosslinker, and a photoinitiator. This composition exhibits high viscosity that resembles the viscosity of a workable two part system after the monomer liquid and the polymer have been mixed. This composition can be shaped to form nail coatings without any additional use of monomers liquid, followed by an exposure to UV light to photopolymerize the composition to create a hard, durable nail coating. Additional ingredients such as colorants and antioxidants may be included in the composition of the present invention.