UV/EB Oligomer
BR-3641AJ
BR-3641AJ: 1.3 Functional Aliphatic Polyether Urethane Acrylate Oligomer
BR-3641AJ is an aliphatic polyether urethane acrylate with a high molecular weight and theoretical 1.3 functionality. Films formulated with BR-3641AJ are highly flexible, elastomeric, and tacky. It is excellent as an adhesion promoter or reactive tackifier. It is a perfect choice for optically clear UV-PSAs.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (60ºC) | 10,000 |
| Pt-Co (APHA) Color | 15 |
| Refractive Index (25ºC) | 1.46 |
| Density, g/cm3 (25ºC) | 1.01 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Tensile Strength (MPa [psi]) | 0.3 [50] | 4.1 [600] | 6.9 [1000] | 4.1 [600] | 4.8 [700] | X |
| Elongation (%) | 400 | 500 | 2.2 | 13.7 | 5.9 | X |
| Elastic Modulus (MPa [ksi]) | 0.2 [0.03] | 35.9 [5.2] | 344.7 [50] | 103.4 [15] | 137.9 [20] | X |
| Durometer Hardness | 17A | 62A | 56D | 27D | 41D | 13A |
| Water Absorption (%) 24hrs | 1.25 | 0.81 | 1.7 | 1.49 | 1.28 | 7.45 |
| MEK Double Rubs (#) | 9 | 8 | 5 | 2 | 15 | 20 |
| Viscosity (cP) | 9,500 @ 25ºC | 1,900 @ 25ºC | 8,400 @ 25ºC | 2,300 @ 25ºC | 1,300 @ 25ºC | 7,000 @ 25ºC |
** Tensile Properties per ASTM D882 - Not Tested || Incompatible X Unable to Measure