K-FLEX 188 is a highly reactive, aliphatic polyester polyol which is recommended for aminoplast or isocyanate crosslinked coatings, inks, sealants, elastomers, and adhesives. Its uniform, narrow molecular weight distribution and unique chemical structure provide exceptional and consistent performance and broad compatibility. K-FLEX 188's primary hydroxyl groups also provide reactivity with epoxies in cationic thermal cure systems.
Excellent Cured Film Properties
Low Temperature Cure
Excellent Adhesion to Plastics
Appearance: Clear, light straw liquid
% Active: 100
Viscosity, cPs, 25°C: 9,800
Hydroxyl number: 230
Hydroxyl equiv. weight: 244
Weight per gallon, 25°C : 9.3 lbs.
Soluble in alcohols, esters, ketones, xylene, Aromatic 100 and Aromatic 150. Partially soluble in mineral spirits. Insoluble in water.
Appliance and Metal Decorating
Automotive OEM & Refinish
Glass laminates/Optical coatings
TYPICAL USAGE LEVELS:
Typically 5 -10% on total resin solids (TRS) for melamine baking systems or 5 - 25% on TRS for 2-component urethanes.