Hardener MB 55

1.Appearance: fine white powder 2.MP:220-225C 3.It is used as hardener for pure epoxy resin 4.for powder coating

Hardener MB-55

JFTM Hardener MB-55(Same as Degussa VESTAGON B55 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.

Characteristics	Appearance	fine powder(white)
	Melting range	220-225°C
	Purity	>=99%
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.
Specific instructions	Recommending formula	Gloss 60°C	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	40	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
	Recommendingcuring condition	180°C	20-25 min
		190°C	10-12 min
		200°C	8-10 min
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.
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.

Hardener MB 55