Excellent Leveling Polyester Resin NH3309 TGIC Cure and Suitable for Matt Powder Coating

◇ Applications:

NH3309 is a saturated carboxyl polyester resin for polyester/TGIC powder coating system with excellent leveling.

It is also suitable to mix with acrylic or matting agent to produce low gloss or matt powder coatings.

◇ Basic features:

Excellent leveling

Outstanding mechanical properties

Good chemical resistance and anti-yellowing

◇ Specifications:

Appearance: Light white or yellow transparent flakes

Color (50%DMF): max:2

Acid number(mgKOH/g): 30～35

Softening point(℃): 100～110

Glass transition temp.(℃): ～60

Melting viscosity(200℃, cone/plate, mPa·s): 2900～4100

Reactivity at 180℃(s, 7% TGIC): 300～400

◇ Recommend Formulation: NH3309—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: 50～70μm

Degreased cold-rolled steel 0.5mm

◇ Curing Requirement: 200℃×15~20min

◇ Film Properties:

Gel time(180℃,sec) 440~550

Horizontal flow(180℃,mm): 28~31

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)