Fast Curing Stable Anti-yellowing NH3383 Polyester Resin for Powder Coating

◇ Applications:

NH3383 is a saturated carboxyl polyester resin for applications of polyester/TGIC powder coating system. Through the modification of polyester resin, the heat resistance and weather resistance of powder coating are improved greatly. Atthe same time, the synthetic direction of polyester resin is expanded and the application field is widened.

◇ Basic features:

Fast curing speed

Fineleveling

Outstanding mechanical properties

Excellent chemical resitance and anti-yellowing

Good storage stability

◇ Specifications:

Appearance: white or light yellow transparent flakes

Color(50%DMF): max:2

Acid number(mgKOH/g): 30～35

Softening point(℃) 103～113

Glass transition temp.( ℃) ～67

Melting viscosity(200℃, cone/plate, mPa·s): 5000±1500

Reactivity at 180℃(s, 7% TGIC) 130±30

◇ Recommend Formulation: NH3383—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

Coating film thickness: 50～100μm

Degreased cold-rolled steel 0.5mm

◇ Curing Requirement: 180℃×12min

◇ Film Properties:

Gel time(180℃,sec) 130~230

Horizontal flow(180℃,mm): 22~25

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)