UV/EB Oligomer
BR-742MS
BR-742MS: Difunctional Aliphatic Polyester Urethane Acrylate Oligomer
BR-742MS is a variant of BR-742M with non-detectable (<10 ppm) MeHQ content to comply with regulatory requirements for both salon and retail nail coating applications in Europe.
This oligomer has an excellent balance of gloss, low color, removability, durability, and low heat generation during the cure process.
| Neat Properties | |
|---|---|
| Property | Value |
| Viscosity cP (60ºC) | 25,000 |
| Pt-Co (APHA) Color | 25 |
| Refractive Index (25ºC) | 1.48 |
| Density, g/cm3 (25ºC) | 1.11 |
| Monomer Dilution Properties | ||||||
|---|---|---|---|---|---|---|
| Value | ||||||
| Property | I30 | I50 | TM50 | TP50 | H50 | HE30 |
| Durometer Hardness | 81D | 84D | 90D | 81D | 82D | 80D |
| Elastic Modulus (GPa [ksi]) | 482.6 [70] | 1,172.1 [170] | 1,516.8 [220] | 689.5 [100] | 827.4 [120] | 448.2 [65] |
| Elongation (%) | 65 | 65 | 3.0 | 8.0 | 7.0 | 100 |
| MEK Double Rubs (#) | 10 | 7 | >200 | 15 | 70 | 45 |
| Tensile Strength (MPa [psi]) | 15.9 [2300] | 22.1 [3200] | 38.6 [5600] | 21.4 [3100] | 30.3 [4400] | 17.9 [2600] |
| Water Absorption (%) 24hrs | 0.31 | 0.21 | 0.39 | 0.49 | 0.36 | 1.43 |
| Viscosity (cP) | 18,000 @ 25ºC | 1,400 @ 25ºC | 8,900 @ 25ºC | 1,400 @ 25ºC | 400 @ 25ºC | 3,500 @ 25ºC |