Trimethylolpropane Triacrylate
CAS Number: 15625-89-5
Trimethylolpropane triacrylate (TMPTA) is a trifunctional acrylate crosslinker and reactive diluent widely used in UV/EB-curable coatings, inks, and adhesives. Its three acryloyl groups enable rapid network formation upon radical initiation, yielding hard, scratch-resistant, and solvent-resistant crosslinked films with excellent surface cure speed.
Technical Specifications
| appearance | Colorless to pale yellow transparent liquid |
| purity (%) | ≥90.0 |
| acidity (as AA, %) | ≤0.1 |
| inhibitor (MEHQ, ppm) | 200 ± 50 |
| viscosity (mPa·s, 25°C) | 90–120 |
Applications
- UV-curable wood and floor coating crosslinker
- Flexo and offset UV ink formulations
- UV-curable adhesive and pressure-sensitive adhesive backings
- EB-curable release liner and film coating
- 3D printing resin formulation reactive diluent
Key Features
- Trifunctionality delivers high crosslink density for superior hardness and scratch resistance
- Fast cure speed suitable for high-line-speed UV coating and printing processes
- Low viscosity reactive diluent reduces formulation viscosity without sacrificing performance
- Versatile compatibility with acrylate oligomers, photoinitiators, and pigment systems
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CAS Number
15625-89-5
Category
Polymer Synthesis ChemicalsAvailability
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