Good Comprehensive Properties HAA NH6588 Polyester Resin for Powder Coating

◇ Applications:

NH-6588 is a saturated carboxyl polyester resin designed for 95:5 Primid XL 552 powder coating to be cured at 200℃.

◇ Basic features:

Super durable weatherablity

excellent yellowing resistance

Boiling water performance

Suitable for outdoor powder coatings.

◇ Specifications:

Appearance pale yellow flake

Color(50%DMF): ≤3

Acid number(mgKOH/g): 38±3

Softening point(℃): 105±5

Glass transition temp.( ℃): ～62

Melting viscosity(200℃, cone/plate, mPa·s): 2200±800

Reactivity at 180℃(s, 5% XL552): 360±120

◇ Recommend Formulation:NH-6588

◇ 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: 200℃×10min.

◇ Film Properties:

Gel time(180℃,sec) 270~390

Flow(180℃,mm) 27~31

Gloss(60°): ≥85%

Adhesive(1mm,grade): 0

Pencil hardness: ≥1H

Direct impact(50cm): pass

◇ Packaging:PE bags, N.W. 25KG±0.1KG / bag

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