UV/EB Oligomer
BR-941
BR-941: Difunctional Aliphatic Polyester Urethane Acrylate Oligomer
BR-941, a hexafunctional, aliphatic polyether urethane acrylate, is used in applications that require a hard, chemically resistant, non-yellowing coating or adhesive with very fast cure response. BR-941’s high functionality and low molecular weight deliver its excellent properties to systems with a final viscosity much lower than is typical of urethane acrylates. BR941 is compatible with a broad range of monomers and oligomers.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (60ºC) | 4,000 |
| Pt-Co (APHA) Color | 30 |
| Refractive Index (25ºC) | 1.496 |
| Density, g/cm3 (25ºC) | 1.20 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 22.8 [3300] | 17.2 [2500] | 6.4 [930] | 14.5 [2100] | 11.7 [1700] | — |
| Elongation (%) | 7.0 | 5.0 | 1.0 | 1.5 | 1.5 | — |
| Elastic Modulus (MPa [ksi]) | 1,861.6 [270] | 655.0 [95] | 1,310.0 [190] | 1,585.8 [230] | 1,241.1 [180] | — |
| Durometer Hardness | 92D | 90D | 92D | 91D | 90D | — |
| Water Absorption (%) 24hrs | — | — | — | — | — | — |
| MEK Double Rubs (#) | >200 | >200 | >200 | >200 | >200 | — |
| Viscosity (cP) | 4,400 @ 25ºC | 400 @ 25ºC | 2,600 @ 25ºC | 400 @ 25ºC | 120 @ 25ºC | - @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure