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K-FLEX® UD-320

1 of 16 products in this brand
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.

Chemical Family: Polyols

Labeling Claims: Low VOC

Hydroxyl Value: 300.0 - 300.0 mg KOH/g

Technical Data Sheet
  • TypeDocument Name
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CASE Ingredients Functions

Features & Benefits

Labeling Claims
Advantages
  • Low VOC
  • Increased Hardness
  • Good Chemical Resistance
  • Good Exterior Durability
  • Excellent Hydrolytic Stability
  • Good QUV Resistance
  • Urethane Functionality without Isocyanates

Applications & Uses

Compatible Substrates & Surfaces
Base Chemicals End Uses
Use Level
5 - 25% (on TRS for 2-component urethanes), 5 - 10% (on total resin solids (TRS) for melamine baking systems)
Applications
  • Machinery and Equipment Coatings
  • Appliance Coatings
  • Automotive Coatings
  • Paper Coatings
  • Wood Coatings
  • Aerospace Coatings
  • Automotive Repair

Properties

Physical Form
Appearance
Clear, Straw viscous liquid
Typical Properties
ValueUnitsTest Method / Conditions
% Active82%
Viscosity (25°C)7000mPa.s
Hydroxyl Number300
Hydroxyl Equivalent Weight188
Weight per Gallon (25°C)9.4lbs
Gardner Color2
VolatilePM Acetate

Storage & Handling

Shelf Life
24 months
Storage/Shelf Life
  • Store in cool, dry location. Keep containers closed when not in use. Do not store near open flame or other sources of ignition. Periodic venting of containers is recommended.
  • 24 months from the date of manufacture when stored at room temperature in the original container.