K-FLEX UD-320 is a high solids, aliphatic, low molecular weight urethane diol oligomer. It is soluble in polar organic solvents and has broad compatibility with acrylic, polyester, and alkyd resins. K-FLEX UD-320 will increase the hardness of a melamine crosslinked system. When used to modify a 2-component polyurethane, it will increase hardness and flexibility. K-FLEX UD-320 responds best to a zirconium chelate catalyst when used in isocyanate crosslinked systems.
| Viscosity @ 25°C | 7,000 cPs |
| Hydroxyl Number | 300 |
| % Active | 82 |
| Application Advantage | Chemical resistance, Exterior durability, Hardness, Low VOC, QUV resistance |
| Formulation Advantage | Hydrolytic stability |
| Market Application | Aerospace, Appliance, Auto refinish, Machinery and equipment, Paper, Wood |
| Product Group | Urethane diol |
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