Epoxy&Polyester Resin HH2583 for low gloss powder paint

◇ Applications:

HH2583 is a carboxyl polyester resin designed for 50/50 hybrid powder coatings with low gloss.

◇ Basic features:

Excellent extinction performance

Good mechanical properties

Good storage stability

Not suitable for high gloss coating.

◇ Specifications:

Appearance white or light yellow transparent flakes

Color(50%DMF) max:3

Acid number(mgKOH/g): 69～75

Softening point(℃) 93～103

Glass transition temp.( ℃) ～53

Melting viscosity(200℃, cone/plate, mPa·s): 3500~5500

Reactivity at 180℃(s, 50% Epoxy): 150～250

◇ Recommend Formulation:HH-2583—E12

◇ 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: 50～100μm

Degreased cold-rolled steel 0.5mm

◇ Curing Requirement: 180℃×15min. or 200℃×20min.

◇ Film Properties:

Gel time(180℃,sec): 50~150

Horizontal flow:(180℃),mm: 20~24

Gloss(60°): ≤10%

Bending(φ1mm): pass

Adhesive(1mm,grade): 0

Pencil hardness: 1H

Impact(50cm): +50, -40

Remarks:all the polyester resins could be customizes to Non-tin (A) ,anti gas burners(G),tribo gun(T) and anti-blooming(F)