K-FLEX A308

K-FLEX A308 is a low viscosity, 100% active, linear, saturated, aliphatic polyester diol with primary hydroxyl groups. This product was designed as a flexibility modifier for acrylic/isocyanate and acrylic/melamine systems. The low viscosity combined with higher hydroxyl number gives good hardness and adhesion while allowing lower VOC levels.

ADVANTAGES:
Improved flexibility
Good balance of surface dry/pot life in 2K PU
Light color
Abrasion resistance
No acid functionality
 

TYPICAL PROPERTIES:
Appearance:                           Clear liquid 
% Active:                                 100
Viscosity, cPs, 25°C:               1,500
Hydroxyl number:                    260
Hydroxyl equiv. weight:           216
Weight per gallon, 25°C :         9.2 lbs. 
 

SOLUBILITY:
Soluble in alcohols, esters, ketones, xylene, Aromatic 100 and Aromatic 150. Partially soluble in mineral spirits. Insoluble in water.
 

APPLICATIONS:
Automotive OEM
Automotive refinish
Aerospace
Industrial maintenance
Plastic coatings
 

TYPICAL USAGE LEVELS:
5-25% replacement of primary backbone resin