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CAS NO.54553-90-1 MF:C9H10N2 SYNONYM:PYROMELLITIC ACID,DI(PHENYLIMDAZOLINE)SAL
GENERAL DE
MATT HARDENE TP68 is used for pure epoxy resin , epoxy\ polyester hybrid powder coatings to achieve coatings with matt surface having excellent mechanic quality and wonderful appearance.
TYPICAL PROPERTIES
| Appearance | Fine white powder | ||||
| Purity | ≥99% | ||||
| Melting range | 200-225℃ |
RECOMMENDEN FORMULATION FOR APPLICATION
| Gloss 60° | 5--6 | 20 | 40 | 70 | |||
| Epoxy(663U) | 54.5 | 39.7 | 35.7 | 31.8 | |||
| Polyester(acidity:25-35mgOH/g) | / | 14.8 | 20.8 | 26.7 | |||
| TP68 | 5 | 5 | 3 | 1 | |||
| Filler(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 | |||
CURING CONDITION
180°C 20-25 minutes,190°C 10-12 minutes,200°C 8-10 minutes
APPLICATION
Mainly used as Curing Agent for polyester powder coating, also used to manufacture electrical insulation materials, laminated sheetings, printed cruts, tools, adhesives, stabilizer for plastic materials,etc. It imparts good weather stability due to its very stable chemical nature. It provides good reactivity through its free functional epoxide groups when it is combined with resins containing carboxyl groups as saturated polyesters. The powder will cure with no especial of VOC.
PACKAGE AND STORAGE
25kgs per Polyethylene bag,35bags per pallets
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 TP68 compatibility with resin isn't well for its high melting point, to avoid this default it’s necessary to distribute them or to make the curing temperature at a higher level.In case of epoxy\polyester hybrid powder coatings, the polyester should be low acidity.
Before achieving the ideal gloss and multiple characteristics tests are needed.
