Durable Isocyanate Polyester Resin

Super Durable Isocyanate Polyester Resin NH7806 with Good Flowability

◇ Applications:

NH7806 is a saturated hydroxyl-terminated polyester resin designed for polyester / isocyanate powder coating to be cured at 200℃.

Advantages of powder coatings

1. Health and environmental protection

2. Convenient transportation and storage

3. No preservative is required

4. Paint smell

◇ Basic features:

Excellent flowability

Good mechanical properties

Good resistance to chemicals

Used for polyurethane powder coating

◇ Specifications:

Appearance pale yellow flake

Color(50%DMF): max:2

Acid number(mgKOH/g): max:8

Hydroxyl value(mgKOH/g): 25～35

Softening point(℃): 103～113

Glass transition temp.( ℃): ～64

Melting viscosity(200℃, cone/plate, mPa·s): 7500±1500

Reactivity at 180℃(s, 13%B1530): 240～400

◇ Recommend Formulation:NH-7806

◇ 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℃×20min.

◇ Film Properties:

Gel time(180℃,sec) 600~900

Flow(180℃,mm) 28~33

Gloss(60°): ≥85%

Bending(φ1mm): pass

Adhesive(1mm,grade): 0

Pencil hardness: 1H

Impact(50cm): pass

Storage test(40℃,24hr): good

Remarks:all the polyester resins could be customizes to Non-tin (A) ,anti gas burners(G),tribo gun(T) and anti-blooming(F)

Good Flowability Isocyanate polyester Resin

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