In the evolving world of UV-curable formulations, particularly for personal care and 高性能 涂料, the demand for safer, purer, and more skin-friendly raw materials is stronger than ever. Responding to this need, 中固化学集团 proudly introduces SINOMER® UVU6256 NM—a specialized, MEHQ-free aliphatic polyurethane acrylate (PUA) oligomer engineered to set new standards in UV nail gel applications and other formulations where 阻聚剂 sensitivity is a concern.
Methyl ethyl hydroquinone (MEHQ) is a common polymerization 阻聚剂 added to acrylic 单体s and oligomers to enhance shelf stability. However, in applications involving direct and prolonged skin contact—such as UV-cured nail gels—the presence of MEHQ can raise concerns regarding potential sensitization, odor, and long-term biocompatibility. Formulators seeking cleaner, low-irritation, and consumer-friendly products are increasingly prioritizing MEHQ-free alternatives.
SINOMER® UVU6256 NM is developed precisely for this purpose, offering a safer foundation without compromising performance.
MEHQ-Free & Low Odor: Specifically formulated without MEHQ, making it ideal for personal care and sensitive applications. Its low odor profile enhances the user and applicator experience.
Excellent Flexibility & Durability: As a difunctional aliphatic PUA, it delivers outstanding flexibility (>200 folds over a 0.1mm mandrel) and impact resistance, resulting in durable, crack-resistant nail gels and flexible 涂料.
Superior Wetting & Adhesion: Exhibits excellent substrate wetting properties, ensuring smooth application and strong adhesion (Grade 2) on various surfaces without the need for additional wetting agents.
Aliphatic Structure for Good Yellowing Resistance: The aliphatic backbone provides inherent resistance to yellowing under UV exposure, helping manicures and clear 涂料 maintain their clarity and color fidelity over time.
High Purity & Consistency: With a solid content ≥99% and controlled viscosity, it ensures reliable processing and predictable performance in formulations.
Appearance | Colorless to Slightly yellow transparent liquid |
Color (Fe-Co) | ≤1 |
Viscosity (cps @ 40°C) | 150,000 - 170,000 (NDJ-79 viscometer) |
NCO Value (mg KOH/g) | 0 |
Solid Content (%) | ≥99 |
Refractive Index (25°C) | 1.4794 ± 0.005 |
Density (g/ml) | 1.12 ± 0.02 |
Tested in a basic formulation (100:3 ratio with 光引发剂 1173), SINOMER® UVU6256 NM demonstrates the following key characteristics:
Flexibility: >200 folds
Adhesion: Grade 2
Gloss (60°): 91.7°
Pencil Hardness: <6B (indicating a very flexible film)
Yellowing Resistance: Fair
Wetting Property: Good
This oligomer is uniquely suited for formulations where skin contact, flexibility, and purity are paramount:
UV-Cured Nail Gels & 涂料: The primary application. Its combination of flexibility, adhesion, and MEHQ-free nature makes it a safe and reliable base for gel polishes, base coats, top coats, and overlay systems.
Sensitive Skin-Contact Formulations: Suitable for other personal care or dermatological UV-curing products where 阻聚剂 sensitivity must be minimized.
Flexible Industrial 涂料: Can be used in vacuum metallization 涂料 on plastic or metal, and in wood or floor 涂料 where excellent flexibility and substrate wetting are required.
By choosing SINOMER® UVU6256 NM, formulators can:
Develop 新一代, consumer-safe UV nail gels with a cleaner ingredient profile.
Reduce the risk of allergic reactions or sensitization associated with traditional 阻聚剂s.
Achieve an optimal balance between application performance (wetting, leveling) and end-use properties (flexibility, durability, gloss).
Streamline formulations by leveraging its inherent wetting ability, potentially reducing additive load.
At 中固化学集团, we are committed to providing innovative solutions that align with market trends and stricter safety standards. SINOMER® UVU6256 NM exemplifies this commitment—offering a specialized, 高性能 material that empowers brands to create safer, superior, and more competitive UV-curable products.
Package: 20 kg or 200 kg/drum.
Explore the potential of MEHQ-free chemistry for your next breakthrough formulation.
For technical data sheets, samples, or formulation support, please contact our team.
