Technical Documents
Combination of aliphatic polyisocyanate and biuret of hexamethylene diisocyanate. It acts as a cross linker.
Details
Recommended for
Producer
Chemical Composition
Combination of aliphatic polyisocyanate and biuret of hexamethylene diisocyanate
Advantages
- compatibility with 2K-PUR, polyesters, acrylates, flexible medium-oil or short-oil alkyd resins and other OH-group containing resins
- dilution in aromatics and esters
- light stability and outstanding weathering resistant in polyurethane paints
- blends of Vestanat® HB 2640 with Vestanat® T 1890 in 2K-PUR paints improve drying performance, surface hardness, pot life and chemical resistance against enviromental impact
Other Applications
Adhesives
Sealants
maintenance-, wood-, industrial- and plastic coatings
Storage
Vestanat® HB 2640/100 is moisture sensitive.It can be stored in unopened containers for at least 6 months at room temperature without loss of quality
Handling
The basic reactivity of Vestanat® HB 2640/100 is lower compared to aromatic- and higher compared to cycloaliphatic polyisocyanate. If necessary zinc octoate, tin- or bismuth-catalysts are recommended as a urethane catalyst.
Technical data
Quantity | Value | Unit | Comment |
---|---|---|---|
Appearance Properties | |||
Color | <80 | َApha | ISO 6271 |
Physical Properties | |||
Residual monomers | PPM | ||
Density | 1.14 | g/ml | ISO 2811; 23°C |
Viscosity | 10000 ± 2000 | cP | ISO 3219;at 23°C |
Thermal Properties | |||
flash point | 181 | ºC | ISO 1523; Closed up |
Chemical Properties | |||
Shelf Life | >6 | month | |
NCO Content | 22.0 ± 0.3 | % | ISO 11909 |
Factor number | 3 - 4 | ||
Non-volatile materials | % wt | ||
Solubility | |||
Solubility | Aromatics | ||
Solubility |