UV/EB Oligomer
BR-744BT
BR-744BT: Difunctional Aliphatic Polyester Urethane Acrylate Oligomer
BR-744BT is an aliphatic difunctional polyester urethane acrylate offering excellent adhesion, toughness, and flexibility. BR-744BT provides excellent flexibility and high elongation to
UV formulations, and can provide impact and chip resistance to nail gel polishes. This material has low skin sensitivity for dental and cosmetic applications and is INCI listed.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (60ºC) | 46,000 |
| Pt-Co (APHA) Color | 45 |
| Refractive Index (25ºC) | 1.496 |
| Density, g/cm3 (25ºC) | 1.11 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Durometer Hardness | 75A | 58D | 81D | 59D | 65D | 55A |
| Elastic Modulus (GPa [ksi]) | 16.5 [2.4] | 310.3 [45] | 758.4 [110] | 172.4 [25] | 310.3 [45] | 18.6 [2.7] |
| Elongation (%) | 160 | 170 | 3 | 12 | 6 | 120 |
| MEK Double Rubs (#) | >200 | 56 | >200 | 49 | 68 | 89 |
| Tensile Strength (MPa [psi]) | 6.9 [1000] | 13.8 [2000] | 17.9 [2600] | 7.6 [1100] | 11.0 [1600] | 4.1 [600] |
| Water Absorption (%) 24hrs | 0.44 | 0.37 | 0.56 | 0.69 | 0.52 | 3.78 |
| Viscosity (cP) | 23,000 @ 25ºC | 2,800 @ 25ºC | 16,000 @ 25ºC | 2,700 @ 25ºC | 1,200 @ 25ºC | 7,500 @ 25ºC |