Vestamin® A 139

Technical Documents

Blocked diamine. Used as an accelerator for moisture curing in 1 pack polyurethane systems.

Details

Product Type

Additive > Catalysts accelerators > Amines catalysts accelerators
Additive > Crosslinking coupling curing agents > Amines crosslinking coupling curing agents

Recommended for

Resin > Polyurethanes > Polyisocyanate
Resin > Polyurethanes

Applications

Adhesives

Producer

Evonik

Supplier

Evonik Iran > Epoxy and polyurethane hardners

Chemical Composition

cycloaliphatic diamine

Advantages
  • very low reactivity towards isocyanate groups
  • reduces the curing time at both ambient and higher temperatures by about 50%
Other Applications

Adhesives

Storage

Vestamin A 139 can be stored in unopened containers for at least one year without loss of quality

Handling

For systems based on Vestanat IPDI it is recommended to use an amount of Vestamin A 139 equivalent to 50-60% conversion with isocyanate groups.As a general rule, approximately 1.5 g Vestamin A 139 should be used for every 1 g of NCO in the formulated paint.

Technical data

Quantity Value Unit Comment
Appearance Properties
Color <150 َApha DIN/ISO 6271
Appearance Transparent
Physical state Fluid
Physical Properties
Flash point 240 ºC DIN 51794
Viscosity 20 - 30 cP DIN EN ISO 3219;at 23°C
Density 0.86 g/ml DIN 51757; ASTMD 1481; at 25°C
Purity >96 % GC
Thermal Properties
flash point 77 ºC closed cup; DIN 51758
flash point 130 ºC open cup; DIN 51584
Chemical Properties
Equivalent weight 140 g/eq
Amin number 400 ± 10 mg KOH/g DIN ISO 3771
Shelf Life >12 month