I. Recommended Base Resins
1. Top Coat Resins
Top coats require fast curing, high hardness, good alcohol resistance, and excellent gloss.
Trust-7136B – Trifunctional polyurethane acrylate. Features very fast curing, high hardness, and good alcohol resistance. Suitable for low-energy curing at 405nm or 395nm. When combined with a thiol curing agent or methoxy monomer, it can be used in thiol-free top coats, achieving 60-second fast curing. The coating is dry, tough, with full gloss and excellent storage stability.
Trust-7135 – Difunctional polyurethane acrylate. Fast curing, good toughness, clear color with minimal yellowing after curing. Supports 60-second low-energy curing at 405nm (with thiol curing agent) or 395nm (with methoxy monomer). Low heat release, low volume shrinkage, low odor, and tough coating – an ideal choice for top coat resins.
2. Color Coat (Middle Coat) Resin
Color coats need moderate curing speed, good pigment wetting, and strong interlayer adhesion.
Trust 7081 – Difunctional polyurethane acrylate. Moderate curing speed, excellent pigment wetting, and superior interlayer adhesion. Suitable for pigmented middle coats.
3. Base Coat Resin
Base coats require flexibility, low shrinkage, and good adhesion.
Trust-7005 – Difunctional polyurethane acrylate. Flexible film, low curing shrinkage, and good adhesion. Features the cleanest resin color and odor.
4. One-Step Color Gel Resin
One-step color gels need fast curing, good color development, and compatibility with long-wavelength low-energy light sources.
Trust-7089 – Difunctional polyurethane acrylate. Fast curing, excellent adhesion, and good color development. Can be used in clear top coats and one-step pigmented gels; compatible with long-wavelength low-energy light sources.
II. Recommended Monomers
Monomers adjust viscosity, curing speed, hardness, and adhesion in UV gel systems.
For Top Coat
AM-318 (ACMO) – Acryloyl morpholine. Advantages: fast curing, high hardness. Disadvantages: slight yellowing upon curing (especially in white systems); monomer is water-soluble.
FM-362 – Methoxy acrylate monomer. Advantages: significant anti-oxygen inhibition effect, good surface drying, low viscosity, strong dilution ability. Disadvantage: relatively high cost.
For Color Coat (Middle Coat)
AM-313 (CTFA) – Fast curing, good toughness, strong adhesion, good water resistance, cost-effective.
For Base Coat
AM-319 (TBCHA) – Strong adhesion, good flexibility, bright cured film, excellent water resistance.
III. Recommended Additives
Additives improve storage stability, anti-oxygen inhibition, and heat resistance.
Thiol Curing Agents
Thiol-45L: high purity, low odor, stable storage.
Thiol-30L: high purity, good anti-oxygen inhibition, cost-effective.
AD-2001 Heat Stabilizer – Non-yellowing, improves heat storage stability of UV gel without reducing photocuring speed.
AD-2003 Inhibitor – Suitable for pigmented gel systems; improves storage stability in the presence of high levels of long-wavelength photoinitiators. Slight yellowing occurs at excessive temperatures – not recommended for top coats.
Conclusion
The materials listed above cover the main options for UV gel nail polish from base coat, color coat, to top coat and one-step pigmented gels. Formulators can select based on target performance (curing speed, hardness, adhesion, storage stability, etc.). This information is based on actual test data and is presented without exaggeration for professional reference.