Carboxyl Saturated Polyester Resins , thermosetting Polyester Anti Corrosion

Low-cost Good Performance Polyester Resin NH3387 for General Industrial Powder Coating

◇ Applications:

NH3387 is a saturated carboxyl polyester resin for applications of polyester/TGIC powder coating system. The balance between high leveling, high weather resistance and mechanical properties of powder coating was perfectly solved. The coating is prepared by mixing resin, pigment and filler, curing agent and other additives in a certain proportion, and then by hot extrusion, crushing and screening. They are stored stably at room temperature. After electrostatic spraying or fluidized bed dip coating, they are heated, baked, melted and solidified to form a flat and bright permanent film, so as to achieve the purpose of decoration and anti-corrosion.

◇ Basic features:

Low costs

Good leveling

Good mechanical properties

Good storage stability

◇ Specifications:

Appearance white or light yellow transparent flakes

Color(50%DMF): max:1

Acid number(mgKOH/g): 30～35

Softening point(℃) 103～113

Glass transition temp.( ℃) ～63

Melting viscosity(200℃, cone/plate, mPa·s): 5000±1000

Reactivity at 180℃(s, 7% TGIC) 250±30

◇ Recommend Formulation: NH3387-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: 200℃×10~20min

◇ Film Properties:

Gel time(180℃,sec) 320~420

Horizontal flow(180℃,mm): 26~29

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)