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Matt Hardener MB68

Matt Hardener MB68 (Same as Degussa VESTAGON B68 Matt Hardener)is Epoxy Resin Hardener /Epoxy Resin Curing Agent.

It is used as hardener for pure epoxy resin, epoxy\ polyester hybrid powder coatings to achieve coatings with matt surface having excellent mechanic quality and wonderful appearance.

1.Characteristics

Appearance: fine powder(white)
Melting range: 200-230C
Purity: >=99%

2.Application

Matt curing agent M68 for epoxy resin and epoxy polyester hybrid powder coatings is used to achieve coatings with matt surface having excellent mechanic quality and wonderful reappearance.

a. Recommending formula gloss 60C 5-6 20 40 70
epoxy(663U or E-12) 54.5 39.7 35.7 31.8
Polyester(acid valve:25-35mgKOH/g) 14.8 20.8 26.7
M68 5.0 5.0 3.0 1.0
Filling material(BaSo4,CaCo3) 40 40 40 40
Levelling agent 0.5 0.5 0.5 0.5
Carbon black 0.5-1 0.5-1 0.5-1 0.5-1
b. Recommending curing condition 180C 20-25 min
190C 10-12 min
200C 8-10 min

4.Notice

a. The M68 ‘s compatibility with resin isn’t well for its high melting point, to avoid this default it’s necessary to distrbute them or to make the curing temperature at a higher level.

b. In the case of epoxy polyester hybrid powder coatings, the polyester used should be low ccidity.Before acid valve the ideal gloss and multiple characteristics tests are needed.

5.Storage

The storage period could last a rather long time when it is kept inside the sealed container. Do seal the container again after taking some from it.