High Molecular Weight Carboxyl Epoxy Resin Powder Coating In HAA Cure

Super Durable and Environmental Friendly Polyester Resin in HAA Cure NH6503

◇ Applications:

NH-6503 is a saturated carboxyl polyester resin for Polyester/Primid powder coatings with super durable weatheribility.

◇ Basic features:

High gloss

Super weathering resistance(Qualicoat level 2)

Excellent chemical resistance,better than TGIC,

Excellent leveling compared with other HAA polyester resin

Good anti-yellowing

◇ Specifications:

Appearance White or pale yellow transparent flakes

Color(50%DMF): max:2

Acid number(mgKOH/g): 30～35

Softening point(℃) 95～110

Glass transition temp.( ℃) ～57

Melting viscosity(200℃, cone/plate, mPa·s): 3500±500

Reactivity at 180℃(s, 5% T-105): 250±50

◇ Recommend Formulation:NH-6503/HAA

◇ 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) 160~250

Horizontal flow:(180℃),mm: 26~28

Gloss(60°): ≥88%

Bending(φ1mm): pass

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)