General HAA Polyester Resin NH6582 for Powder Coating Manufacture popular in China

◇ Applications:

NH-6582 is a saturated carboxyl polyester resin designed for 95:5 Primid XL 552 powder coating to be cured at 180℃.

◇ Basic features:

Excellent mechanical properties

Good anti-yellowing

Pinhole free in thick films

Good weathering resistance and storage stability

◇ Specifications:

Appearance White or pale yellow transparent flakes

Color(50%DMF): max:2

Acid number(mgKOH/g): 30～35

Softening point(℃) 100～110

Glass transition temp.( ℃) ～61

Melting viscosity(200℃, cone/plate, mPa·s): 5400±800

Reactivity at 180℃(s, 5% XL552): 185±35

◇ Recommend Formulation:NH-6582/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: 180℃×10min.

◇ Film Properties:

Gel time(180℃,sec) 120~200

Horizontal flow:(180℃),mm: 23~27

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

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