Specification :

D68 Matt-finishing Hardner
D68 Matt-finishing Hardner is salt prepared from cyclic amidine and polycarboxylic acid . it is equal to B68 of Hü LS ( A.G.) . it can be used as curing agent for epoxy/ polyester hybrid powder coatings with super Matt-finish film of coatings and excellent of vrious mechanicaproperties . through adjusted the formulations , can make luster of coating film of coating film changing between matt finish and high gloss with better apprarence .
Specifications :
Appearance : white or pale powder
Melting point range: 222-228
Recommended formulations

Recommended curing conditions
180 × 20-25 mins
190 × 10-12mins
200 × 8-10 mins

Usage :
Because of D68 matt-finishing hardner has high melting point, it’ s compatibility with resin is unstisfactory. To eliminate this defect, it’ s very important in composing D68 matt-finishing hardner to homoeneous disperion, customers can properly enhance extruding temperature( 100 up) or more extruded