40/60 Chemical Resistant Isocyanate Polyester Resin For Matte PU Powder Coating

Isocyanate Polyester Resin One-time Extrusion for Matte PU Powder Coating

◇ Applications:

NH7405/NH7803 are saturated carboxyl polyester resins for low gloss or matte polyester/isocyanate powder coatings by one shot extrusion.

◇ Basic features:

Excellent weathering resistance

Good chemical resistance

Good film appearance

Suitable for matt or low gloss powder coating

◇ Specifications:

NH7405 NH7803

Appearance pale yellow flake pale yellow flake

Color(50%DMF): ≤2 ≤2

Hydroxyl Valu((mgKOH/g): 280～320 35～45

Softening point(℃): 102～112 102～112

Glass transition temp.( ℃): ~55 ~57

Melting viscosity: 3000~5000 3000~5000

(200℃, cone/plate, mPa·s)

Reactivity at 180℃(s, B1530): 120~240 300~420

◇ Recommend Formulation:

◇ 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: 50～80μm

Degreased cold-rolled steel 0.5mm

◇ Curing Requirement: 200℃×15min

◇ Film Properties:

Gloss(60°): ≤20%

Pencil hardness: ≥ 3H

◇ 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)

Chemical Resistant Isocyanate polyester Resin

40/60 Isocyanate polyester Resin

40/60 polyester powder paint

40/60 Chemical Resistant Isocyanate Polyester Resin For Matte PU Powder Coating Images