UV/EB Oligomer
BR-204
BR-204: Difunctional Aromatic Polyether Urethane Methacrylate Oligomer
BR-204, an aromatic polyether urethane dimethacrylate, finds use in a diverse number of UV adhesives applications. BR-204 is valued for its strong bond strength, its affinity for glass, steel, and a variety of plastic substrates, and for its excellent elongation. BR-204 is also of value for its low initial viscosity and low color (despite its aromatic nature).
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (25ºC) | 11,000 |
| Pt-Co (APHA) Color | 15 |
| Refractive Index (25ºC) | 1.502 |
| Density, g/cm3 (25ºC) | 1.03 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 0.6 [90] | 1.0 [150] | 11.7 [1700] | 6.9 [1000] | 9.7 [1400] | 0.8 [120] |
| Elongation (%) | 120 | 190 | 3.0 | 15.0 | 7.9 | 200 |
| Elastic Modulus (MPa [ksi]) | 0.9 [0.13] | 1.5 [0.22] | 448.2 [65] | 137.9 [20] | 206.8 [30] | 2.2 [0.32] |
| Durometer Hardness | 39A | 51A | 75D | 45D | 55D | 30A |
| Water Absorption (%) 24hrs | 1.56 | 1.03 | 1.64 | 1.46 | 0.89 | 6.78 |
| MEK Double Rubs (#) | 3 | 6 | 128 | 8 | 17 | 32 |
| Viscosity (cP) | 2,100 @ 25ºC | 600 @ 25ºC | 2,300 @ 25ºC | 700 @ 25ºC | 400 @ 25ºC | 1,600 @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure