Desmophen® R 221 75

Saturated polyester resin in propylene glycol monomethyl ether acetate. Used to improve weatherability and flexibility of polyester systems reacted with polyisocyanates.

Details

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Chemical Composition

Saturated polyester resin

Advantages
  • durable
  • corrosion-resistant finishes
  • high impact strength
  • toughness
  • abrasion resistance

Technical data

Quantity Value Unit Comment
Appearance Properties
Color <3 Gardner
Physical state Fluid
Physical Properties
Viscosity 3000 - 11000 cP 25°C
Water content <0.2 %
Solid Content 72 - 78 %
Chemical Properties
Hydroxyl percentage 3.3 %
Acidity number <9 mg KOH/g
Hydroxyl number 90 - 125 mg KOH/g
Equivalent weight 522 g/eq

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