Cost-effecive 60:40 Polyester Epoxy Resin HH2686 with Good Gloss Extinction

◇ Applications:

HH2686 is a carboxyl polyester resin designed for 60/40 hybrid (indoor use) powder coatings.

◇ Basic features:

Excellent leveling

Outstanding mechanical properties

Good chemical resistance

Good storage stability

◇ Specifications:

Appearance white or light yellow transparent flakes

Color(50%DMF): max:3

Acid number(mgKOH/g) 52.5～57

Softening point(℃) 93～103

Glass transition temp.( ℃) ～55

Melting viscosity(ICI,mPa.s/200℃): 3000～4500

Reactivity at 180℃(s, 40% Epoxy): 170～300

◇ 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 or 200℃×10min

◇ Film Properties:

Gel time(180℃,sec) 220~320

Horizontal flow:(180℃),mm: 28~30

Gloss(60°): ≥90%

Bending(φ1mm): pass

Adhesive(1mm,grade): 0

Pencil hardness: 1H

Impact(50kg·cm): pass

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