UV/EB Oligomer
BR-742S
BR-742S: Difunctional Aliphatic Polyester Urethane Methacrylate Oligomer
BR-742S is a difunctional, polyester Urethane Acrylate Oligomer that offers good weatherability. High-impact-strength coatings and inks can be formulated that are non-yellowing and have high gloss. This material offers low shrinkage, which is excellent for 3D printing applications. Furthermore, BR-742S is registered with INCI for cosmetic applications.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (60ºC) | 25,000 |
| Pt-Co (APHA) Color | 30 |
| Refractive Index (25ºC) | 1.48 |
| Density, g/cm3 (25ºC) | 1.11 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 31.0 [4500] | 47.6 [6900] | 44.8 [6500] | 33.8 [4900] | 40.0 [5800] | 2.9 [422] |
| Elongation (%) | 76 | 11 | 4 | 21 | 10 | 130 |
| Elastic Modulus (MPa [ksi]) | 551.6 [80] | 1,103.2 [160] | 1,310.0 [190] | 586.1 [85] | 758.4 [110] | 68.9 [10] |
| Durometer Hardness | 80D | 82D | 90D | 79D | 81D | 76D |
| Water Absorption (%) 24hrs | 0.25 | 0.18 | 0.35 | 0.44 | 0.31 | 1.66 |
| MEK Double Rubs (#) | 29 | 17 | >200 | 129 | 96 | 23 |
| Viscosity (cP) | 16,500 @ 25ºC | 1,100 @ 25ºC | 7,600 @ 25ºC | 1,100 @ 25ºC | 360 @ 25ºC | 2,800 @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure