UV/EB Oligomer
BR-542MB
BR-542MB: Difunctional Aliphatic Polyether Urethane Methacrylate
BR-542MB is a difunctional, aliphatic polyether urethane methacrylate. BR-542MB is used for its desirable balance of toughness and flexibility and its ability to adhere to a variety of substrates. As a primary oligomer, BR-542MB offers excellent properties of adhesion and optical clarity. As a co-oligomer, BR-542MB can be used to improve an existing formulation’s glass adhesion.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (60ºC) | 4,900 |
| Pt-Co (APHA) Color | 25 |
| Refractive Index (25ºC) | 1.48 |
| Density, g/cm3 (25ºC) | 1.05 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 15.2 [2200] | 20.7 [3000] | 37.2 [5400] | 10.3 [1500] | 22.8 [3300] | 24.1 [3500] |
| Elongation (%) | 100 | 130 | 5.2 | 6.3 | 6.4 | 110 |
| Elastic Modulus (MPa [ksi]) | 103.4 [15] | 448.2 [65] | 1,310.0 [190] | 379.2 [55] | 758.4 [110] | 482.6 [70] |
| Durometer Hardness | 55D | 72D | 85D | 71D | 74D | 70D |
| Water Absorption (%) 24hrs | 0.58 | 0.33 | 0.76 | 0.81 | 0.63 | 2.53 |
| MEK Double Rubs (#) | 20 | 9 | >200 | 16 | 160 | 14 |
| Viscosity (cP) | 6,400 @ 25ºC | 1,000 @ 25ºC | 4,400 @ 25ºC | 1,100 @ 25ºC | 500 @ 25ºC | 2,600 @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure