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K-FLEX A307

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K-FLEX A307 is a low viscosity, 100% solids 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 hydroxyl number minimizes the crosslinker demand.



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



TYPICAL PROPERTIES:
Appearance:                               Clear, viscous liquid
% Nonvolatile, 1 Hr @ 110°C:    97
Viscosity, cPs, 25°C:                  5,400    
Hydroxyl number:                       140
Hydroxyl equiv. weight:               400
Acid number:                               0.1                         
Weight per gallon, 22°C:             9.25 lbs.
 



APPLICATIONS:
Automotive OEM
Automotive refinish
Aerospace
Industrial maintenance
Plastic coatings
 


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



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

 
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