Polyester Resin NH3405 TGIC Cure 96:4 for Powder Coating

◇ Application:

NH3405 is a saturated carboxyl polyester resin for polyester/TGIC powder coating system at the rate of 96:4.

◇ Basic features:

Good leveling

Good mechanical properties

Excellent weathering resistance

Excellent anti-yellowing

◇ Specifications:

Appearance white or light yellow transparent flakes

Color (50%DMF): max: 3

Acid Value (mgKOH/g): 27.5～32

Softening point(℃): 108 ～116

Glass transition temp.(℃): ～65

Melting viscosity(ICI, mPa·s/200℃): 4500～6500

Reactivity at 180℃(s, 6% TGIC): 140±40

◇ Recommend Formulation:

◇ Extrusion Condition:

Two-screw extruder

Zone I: 90～110℃ Zone II: 110～120℃

Speed of revolution: 500～1200rpm

Fineness of powder: ＜80μm

◇ Application Condition:

Electrostatic spraying with: 40～70KV

Film thickness: 50～70μm

Degreased cold-rolled steel 0.5mm

◇ Curing condition: 200℃×10min

◇ Film Properties:

Gel time(180℃,sec) 100~280

Flow(180℃,mm): 24~29

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)

Because polyester resin has polar groups, the powder loading rate is higher than that of epoxy resin, it is not easy to yellowing during baking, high gloss, good leveling, plump paint film, light color and other characteristics, so it has good decoration. Generally used in refrigerators, washing machines, vacuum cleaners, instrument housings, bicycles, furniture and other fields.