Applications:

HH2783 is a carboxyl polyester resin designed for 70/30 hybrid powder coatings.

 Basic features:

Excellent mechanical properties

Good leveling

Good comprehensive performance

Specifications:

Appearance: White or light yellow transparent flakes

Color(50%DMF) max:2

Acid number(mgKOH/g): 29～35

Softening point(℃): 98～110

Glass transition temp.( ℃): ～57

Melting viscosity(200℃, cone/plate, mPa·s): 5500±1000

Reactivity at 180℃(s, 30% Epoxy): 240±60

 Recommend Formulation:

Extrusion Condition:

Two-screw extruder

Zone I: 90～110℃ Zone II: 110～120℃

Speed of revolution: 500～1200rpm

Fineness of powder: ＜100μm

 Application Condition:

Electrostatic spraying with: 40～70KV

Coating film thickness: 50～70μm

Degreased cold-rolled steel 0.5mm

Curing Requirement: 180℃×15min.

Film Properties:

Gel time(180℃,sec) 180~300

Horizontal flow(180℃,mm): 24-27

Gloss(60°): ≥85%

Bending(φ1mm): pass

Adhesive(1mm,grade): 0

Pencil hardness: ≥1H

Impact (50cm) pass

 Packaging:

PE bags, N.W. 25KG±0.1KG / bag