UV/EB Oligomer
BR-744SD
BR-744SD: Difunctional Aliphatic Polyester Urethane Acrylate
BR-744SD is a difunctional, aliphatic polyester urethane acrylate offering excellent adhesion, flexibility, and tensile strength. It can be effectively formulated for adhesion to steel, aluminum, and various plastics. Products formulated with BR-744SD can be highly flexible, elastomeric, and tacky. It is excellent as an adhesion promoter or reactive tackifier, and is a perfect choice for optically clear UV-PSAs.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (60ºC) | 7,000 |
| Pt-Co (APHA) Color | 35 |
| Refractive Index (25ºC) | 1.474 |
| Density, g/cm3 (25ºC) | 1.11 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 9.7 [1400] | 24.1 [3500] | 26.2 [3800] | 17.9 [2600] | 17.9 [2600] | 11.7 [1700] |
| Elongation (%) | 320 | 360 | 5.4 | 30 | 12.0 | 250 |
| Elastic Modulus (MPa [ksi]) | 3.1 [0.45] | 9.8 [1.42] | 620.5 [90] | 115.8 [16.8] | 241.3 [35] | 5.9 [0.86] |
| Durometer Hardness | 65A | 48D | 80D | 55D | 61D | 82A |
| Water Absorption (%) 24hrs | 0.51 | 0.31 | 0.64 | 0.73 | 0.55 | 4.66 |
| MEK Double Rubs (#) | 37 | 28 | >200 | 62 | 40 | 30 |
| Viscosity (cP) | 8,300 @ 25ºC | 1,300 @ 25ºC | 7,000 @ 25ºC | 1,500 @ 25ºC | 700 @ 25ºC | 600 @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure