High Quality Crystal Clear Polyester Resin NH8309 for Transparent Powder Coating

◇ Applications:

NH8309 is a saturated carboxyl polyester resin for polyester/TGIC powder coating system.

◇ Basic features:

Superb leveling

High transparency

Good weathering resistance

◇ Specifications:

Appearance: white or pale yellow transparent flakes

Color (50%DMF): max: 2

Acid number(mgKOH/g): 32～36

Softening point(℃): 103～113

Glass transition temp.(℃): ～64

Melting viscosity(200℃, cone/plate, mPa·s): 4000～6000

Reactivity at 180℃(s, 7% TGIC): 390～510

◇ Recommend Formulation: NH8309—TGIC

◇ 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

Film thickness: 70～90μm

Degreased cold-rolled steel 0.5mm

◇ Curing Requirement: 200℃×15min

◇ Film Properties:

Gel time(180℃,sec) 450~700

Horizontal flow:(180℃), mm: 27~30

Gloss(60°): ≥88%

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)

We ensure the quality and stability of products through strict quality control.
Service is the life of an enterprise, and quality is the foundation of an enterprise.