UV/EB Oligomer
BR-372
BR-372: Difunctional Aliphatic Polyether Urethane Acrylate Oligomer
BR-372, a medium molecular weight, difunctional, aliphatic polyether urethane acrylate oligomer, is a material offering a balance of toughness and flexibility, with very low color. Formulations with BR-372 yield high clarity films with adhesion to a variety of plastics, and can also be used in the manufacture of UV-curable fiberglass matrix resins. This material has low skin sensitivity for dental and cosmetic applications.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (60ºC) | 8,500 |
| Pt-Co (APHA) Color | <50 |
| Refractive Index (25ºC) | 1.48 |
| Density, g/cm3 (25ºC) | 1.10 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 15.2 [2200] | 17.9 [2600] | 27.6 [4000] | 12.4 [1800] | 18.6 [2700] | — |
| Elongation (%) | 90 | 85 | 5 | 13 | 9 | — |
| Elastic Modulus (GPa [ksi]) | 172.4 [25] | 551.6 [80] | 827.4 [120] | 413.7 [60] | 551.6 [80] | — |
| Durometer Hardness | 65D | 75D | 85D | 69D | 76D | — |
| Water Absorption (%) 24hrs | — | — | — | — | — | — |
| MEK Double Rubs (#) | 7 | 8 | >200 | 76 | >200 | — |
| Viscosity (cP) | 9,500 @ 25ºC | 1,000 @ 25ºC | 5,400 @ 25ºC | 1,100 @ 25ºC | 400 @ 25ºC | — @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure