K-FLEX UD-350W

K-FLEX UD-350W is an aqueous solution of an aliphatic, low molecular weight urethane diol oligomer. It is recommended as a modifier for amino crosslinked water soluble and emulsified acrylic, alkyd, urethane and polyester resins. K-FLEX UD-350W can be used as a reactive cosolvent replacement to increase solids, crosslink density, improve film/resistance properties and flow/leveling.

ADVANTAGES:
Allows cosolvent reduction (lower-VOC)
Water soluble without using amine and cosolvent
Reduced Popping
Increased hardness
Good chemical/stain resistance
Improved flow/leveling (higher gloss)
Good hydrolytic stability
Excellent QUV resistance and exterior durability
Anti-skinning
 

TYPICAL PROPERTIES:
Appearance:                            Straw colored liquid 
% Active:                                  88
Viscosity, cPs, 50°C:               4,000
Hydroxyl number:                    325
Hydroxl equiv. weight:             170
Weight per gallon, 25°C:          9.4 lbs.    
Diluent:                                     Water
 

SOLUBILITY:
K-FLEX UD-350W is soluble in water and in all water miscible organic solvents. It is not soluble in aliphatic and aromatic hydrocarbons.
 

APPLICATIONS:
 Emulsions or water-borne thermoset coatings crosslinked with aminoplasts:
Coil coatings
Overprint varnishes
Appliance coatings
Automotive coatings
Wood coatings
Can coatings
Dip coatings
 

TYPICAL USAGE LEVELS:
K-FLEX UD-320W should be used as a reactive resin modifier at 2-15% of total resin solids. At levels greater than 5% the aminoplast ratio should be increased.