Sinocure Chemical Group is proud to announce the launch of two innovative carboxylated acrylate monomers – Sinomer® PET3A-CA and Sinomer® Di-PET5A-CA. Developed by our R&D team with a deep understanding of UV-curable formulations, these new products are designed to meet the growing demand for solutions that deliver exceptional adhesion, fast curing speed, and high crosslink density in demanding applications.
Traditional multifunctional acrylates (such as PETIA or DPHA) provide high hardness and fast curing but often fall short in adhesion to difficult substrates like metals, plastics, and glass. Conversely, conventional carboxyl monomers (such as CEA or β-CEA) improve adhesion but lack the functionality needed for high crosslink density.
The Sinomer® Carboxylated Series solves this dilemma:
✅ Carboxyl Functionality → Forms strong chemical bonds with substrates, dramatically improving adhesion
✅ High Acrylate Functionality → Delivers high crosslink density for coating hardness and resistance
✅ Integrated Design → A single molecule addresses both adhesion and crosslinking needs, simplifying formulation
| Test Item | Specification | Typical Result |
|---|---|---|
| Appearance (25°C) | Clear to slightly yellow liquid | Clear transparent liquid |
| Color (APHA) | ≤ 50 | 11.52 |
| Viscosity (cps @ 25°C) | 400 – 800 | 682.8 |
| Acid Value (mg KOH/g) | – | 44.18 |
| Test Item | Specification | Typical Result |
|---|---|---|
| Appearance (25°C) | Clear to slightly yellow liquid | Slightly yellow transparent liquid |
| Color (APHA) | ≤ 50 | 36.76 |
| Viscosity (cps @ 25°C) | 3000 – 6000 | 4536 |
| Acid Value (mg KOH/g) | – | 39.91 |
| Property | Sinomer® PET3A-CA | Sinomer® Di-PET5A-CA |
|---|---|---|
| Adhesion | ⭐⭐⭐ Excellent to metals & plastics | ⭐⭐⭐ Outstanding on difficult substrates |
| Curing Speed | ⭐⭐⭐ Fast | ⭐⭐⭐⭐ Ultra-fast |
| Crosslink Density | ⭐⭐⭐ Medium-High | ⭐⭐⭐⭐⭐ Very High |
| Hardness | ⭐⭐⭐ High | ⭐⭐⭐⭐ Very High |
| Flexibility | ⭐⭐⭐ Good balance | ⭐⭐ Moderate |
| Chemical Resistance | ⭐⭐⭐ Good | ⭐⭐⭐⭐⭐ Excellent |
Both products are suitable for a wide range of UV/EB curing systems:
| Application Area | Recommended Product | Performance Contribution |
|---|---|---|
| Metal Coatings | PET3A-CA / Di-PET5A-CA | Carboxyl groups bond strongly with metal surfaces, enhancing adhesion and corrosion resistance |
| Plastic Coatings | PET3A-CA | Improves adhesion to PC, ABS, PVC, and other plastics |
| UV Inks | PET3A-CA | Enhances pigment wetting and adhesion to various substrates |
| Optical Fiber Coatings | Di-PET5A-CA | High crosslink density provides excellent protection; carboxyl groups enhance glass adhesion |
| Solder Masks | Di-PET5A-CA | High hardness and chemical resistance meet demanding PCB requirements |
| Adhesives | PET3A-CA | Improves bond strength to metals, glass, and other substrates |
| Product | Recommended Loading | Suitable Systems |
|---|---|---|
| Sinomer® PET3A-CA | 5 – 20% | UV coatings, UV inks, adhesives |
| Sinomer® Di-PET5A-CA | 10 – 30% | High-durability coatings, optical fiber coatings, solder masks |
Note: Optimal dosage should be determined through experimentation based on the specific formulation. Contact our technical team for formulation support.
| Comparison Aspect | Common Carboxyl Products (e.g., CEA) | Sinomer® Carboxylated Series |
|---|---|---|
| Functionality | Mono-functional | Tri-functional / Penta-functional |
| Crosslink Density | Low | High |
| Adhesion Mechanism | Single carboxyl group | Carboxyl + High-reactivity acrylates |
| Formulation Efficiency | Requires blending | Integrated solution |
| Cost Performance | Moderate | Superior value |
Sinocure provides comprehensive support for all new products:
TDS & MSDS: Detailed technical documentation available
Free Samples: Support for formulation development and testing
Formulation Guidance: Technical team available for application support
Reliable Supply: Industrial-scale production capacity
If you are seeking UV monomers that simultaneously solve adhesion and crosslink density challenges, Sinomer® PET3A-CA and Sinomer® Di-PET5A-CA are the answers worth exploring.
Contact us for samples or technical documentation:
Email: info@sinocurechem.com
Phone: +86 15668330235
Sinocure Chemical Group – Breathing New Life Into Chemistry
