UV/EB Oligomer
BR-202
BR-202: Difunctional Aromatic Polyether Urethane Methacrylate Oligomer
BR-202, an aromatic polyether urethane dimethacrylate, finds use in a diverse number of UV coating applications. BR-202 is valued for its strong bond strength, its affinity for glass, steel, and a variety of plastic substrates, and for its excellent elongation. BR-202 is also of value for its low initial color (despite its aromatic nature).
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (25ºC) | 100,000 |
| Pt-Co (APHA) Color | 20 |
| Refractive Index (25ºC) | 1.493 |
| Density, g/cm3 (25ºC) | 1.08 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 11.7 [1700] | 17.2 [2500] | 20.0 [2900] | 15.2 [2200] | 17.2 [2500] | 9.7 [1400] |
| Elongation (%) | 110 | 110 | 2.7 | 15 | 6 | 95 |
| Elastic Modulus (MPa [ksi]) | 49.6 [7.2] | 517.1 [75] | 896.3 [130] | 310.3 [45] | 482.6 [70] | 137.9 [20] |
| Durometer Hardness | 62D | 76D | 85D | 75D | 79D | 70D |
| Water Absorption (%) 24hrs | 0.75 | 0.39 | 0.7 | 0.85 | 0.6 | 3.18 |
| MEK Double Rubs (#) | 20 | 7 | >200 | 45 | 70 | 93 |
| Viscosity (cP) | 3,500 @ 25ºC | 2,600 @ 25ºC | 2,800 @ 25ºC | 2,900 @ 25ºC | 1,300 @ 25ºC | 7,600 @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure