Tripropylene Glycol Diacrylate (TPGDA)
Tripropylene glycol diacrylate (TPGDA) is a difunctional reactive diluent with a branched alkyl polyether backbone. Polymerization occurs when TPGDA is exposed to sources of free radicals. It is widely used as a primary diluent in the formulation of ultraviolet light (UV) and electron beam (EB) energy curable coatings and inks.
Technical Data
| Chemical Structure |  |
| Molecular Formula | C15H24O6 |
| Molecular Weight | 300.35 |
| CAS No. | 42978-66-5 |
| Acid Value, mg KOH/g | ≤0.4 |
| Appearance | Clear liquid |
| Color, Apha | ≤5 |
| Residual Solvent, wt. % | ≤0.09 |
| Viscosity, 25°C, mPa.s | 10 - 15 |
| Water, wt. % | ≤0.1 |
Application
- TPGDA finds application in UV/EB cured ink and coating systems. TPGDA is an especially useful reactive diluent when water resistance and low viscosity are required.
- Dilution of viscous oligomers or polymers