UV/EB Oligomer
BR-344
BR-344: Difunctional Aliphatic Polyether Urethane Acrylate Oligomer
BR-344, a high molecular weight, difunctional, aliphatic polyether urethane acrylate oligomer, is a cost-effective choice for coatings formulations which require weathering durability and non-yellowing characteristics. Formulations with BR-344 result in flexible yet durable, abrasion resistant, non-yellowing systems of moderate- to low-viscosity.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (25ºC) | 20,000 |
| Pt-Co (APHA) Color | 10 |
| Refractive Index (25ºC) | 1.459 |
| Density, g/cm3 (25ºC) | 1.02 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 0.7 [95] | 4.8 [700] | 13.8 [2000] | 9.0 [1300] | 11.0 [1600] | 1.9 [270] |
| Elongation (%) | 75 | 230 | 2.8 | 16 | 8.9 | 190 |
| Elastic Modulus (MPa [ksi]) | 1.3 [0.19] | 7.6 [1.1] | 586.1 [85] | 172.4 [25] | 241.3 [35] | 1.8 [0.26] |
| Durometer Hardness | 35A | 54A | 69D | 45D | 50D | 20A |
| Water Absorption (%) 24hrs | 0.73 | 0.46 | 1.09 | 0.95 | 0.77 | 5.49 |
| MEK Double Rubs (#) | 25 | 17 | 130 | 20 | 15 | 10 |
| Viscosity (cP) | 2,500 @ 25ºC | 600 @ 25ºC | 2,300 @ 25ºC | 700 @ 25ºC | 300 @ 25ºC | 1,700 @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure