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K-FLEX® 188 is a highly reactive, aliphatic polyester diol which is recommended for aminoplast or isocyanate crosslinked coatings, inks, sealants, elastomers, and adhesives. K-FLEX® 188 is the most versatile polyester diol in the K-FLEX® line.

Chemical Family: Polyols

Hydroxyl Value: 230.0 - 230.0 mg KOH/g

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Advantages
  • 100% Active
  • Low VOC
  • Improved flexibility while maintaining hardness
  • Excellent cured film properties
  • Low temperature cure
  • Excellent adhesion to plastics
  • High resistivity
  • Light color

Applications & Uses

Compatible Substrates & Surfaces
Base Chemicals End Uses
Use Level
5 - 10 wt. % (on Total Resin Solids for Melamine Baking Systems), 5 - 25% (on TRS for 2-component urethanes)
Applications
  • Aerospace coatings
  • Appliance and metal decorating
  • Automotive OEM & refinish
  • Agricultural & construction equipment
  • Plastic substrates
  • Overprint varnishes
  • Marine/maintenance
  • Glass laminates/Optical coatings

Properties

Physical Form
Appearance
Clear, Light straw liquid
Typical Properties
ValueUnitsTest Method / Conditions
% Active100%
Viscosity (25°C)9800mPa.s
Hydroxyl Number230
Hydroxyl Equivalent Weight244
Specific Gravity (25°C)1.11

Storage & Handling

Shelf Life
24 months
Storage/Shelf Life
  • K-FLEX 188 should be stored in a cool dry location at temperatures of 15 - 35ºC.
  • 24 months from the date of manufacture when stored at room temperature in the original container.