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VESTAGON® B

Products

VESTAGON® B grades are ε-caprolactam blocked IPDI based polyisocyanates providing highest possible crosslink density beside good levelling.


Our VESTAGON® B grades bear isocyanate groups reversibly reacted with an external blocking agent. During synthesis the reactive isocyanate group is rendered inert through the formation of a relatively weak urea bond. This bond can be cleaved upon heating starting from 20 min. at 170°C by forming ε-caprolactam.

From linear to highly branched as well as for highest possible chemical resistance Evonik provides a full range of external blocked crosslinkers enabling formulators to meet various demands of end customers.
   
 

Product
Supply Form
NCO content
Tg
Remarks

VESTAGON® B 1065

Pellets

10.1-10.8 % bwt

 ~51 ˚C

For very smooth coatings, linear

VESTAGON® B 1400

Pellets / Flakes

12.5-14.0 % bwt

 ~52 ˚C

For coatings with good chemical resistance

VESTAGON® B 1530

Pellets / Flakes

14.8-15.7 % bwt

~48 ˚C

Like B 1400 but excellent durability