UV/EB Oligomer
BR-441BI20
BR-441BI20: Difunctional Aliphatic Polyester Urethane Acrylate Oligomer
BR-441BI20 is a fast-curing, high tensile strength, low molecular weight aliphatic polyester urethane acrylate with low color, high hardness, and excellent adhesion to plastic substrates. BR-441BI20 can be considered for use in high tensile strength overprint varnishes, high tensile strength 3D printing resins, and low-yellowing coatings.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (25ºC) | 73,000 |
| Pt-Co (APHA) Color | 30 |
| Refractive Index (25ºC) | 1.49 |
| Density, g/cm3 (25ºC) | 1.13 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 40.0 [5800] | 35.9 [5200] | 27.6 [4000] | 28.3 [4100] | 33.8 [4900] | 24.8 [3600] |
| Elongation (%) | 4.7 | 3.5 | 1.9 | 3.8 | 4.1 | 7.2 |
| Elastic Modulus (MPa [ksi]) | 1,654.7 [240] | 1,447.9 [210] | 1,654.7 [240] | 1,310.0 [190] | 1,172.1 [170] | 1,310.0 [190] |
| Durometer Hardness | 87D | 85D | 91D | 82D | 85D | 81D |
| Water Absorption (%) 24hrs | 0.27 | 0.2 | 0.3 | 0.36 | 0.24 | 1.68 |
| MEK Double Rubs (#) | 37 | 7 | >200 | 195 | >200 | 7 |
| Viscosity (cP) | 2,500 @ 25ºC | 400 @ 25ºC | 2,000 @ 25ºC | 300 @ 25ºC | 140 @ 25ºC | 600 @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure