Saturated Isophthalic Polyester Resin NH8081 NH8506 for Dry Blend Low Gloss Powder Coating

Powder Paint Polyester resin NH8081&NH8506 for Dry bleding Low Gloss 

◇ Applications:

NH8081/NH8506 are saturated carboxyl polyester resins for low gloss polyester/TGIC powder coatings by a dry blending procedure.

◇ Basic features:

Low gloss film

Excellent mechanical properties

Good chemical resistance

Good leveling

Excellent boiling water resistance

◇ Specifications:

                                                         NH8081                         NH8506

Appearance:                             pale yellow flake               pale yellow flake

Color(50%DMF):                              ≤2                                     ≤4

Acid number(mgKOH/g)              49～55                              22～25

Softening point(℃):                   105～115                           103～113

Glass transition temp.( ℃):           ~67                                      ~61

Melting viscosity:                      8250±1250                       8100±500

(200℃, cone/plate, mPa·s)

Reactivity at 180℃(s, TGIC):      75±25                             505±75

◇ Recommend Formulation:

◇ Extrusion Condition:

Two-screw extruder

Zone I: 90～110℃ Zone II: 110～120℃

Speed of revolution: 500～1200rpm

Fineness of powder: ＜100μm

Blend I and II in the weight ratio of 1:1 before grinding.

◇ Application Condition:

Electrostatic spraying with: 40～70KV

Coating film thickness: 50～70μm

Degreased cold-rolled steel 0.5mm

◇ Curing Requirement: 200℃×10min

◇ Film Properties:

Gloss(60°): ≤45%

Bending(φ2mm): Pass

Adhesive(1mm,grade): 0

Pencil hardness: ≥H

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)

Kinte Material Technology Co., Ltd. is a state-owned holding enterprise specializing in the R & D, production and sales of powder coatings, saturated polyester resin for powder coatings, liquid coatings and special new materials. It is subordinate to China National Electric Apparatus Research Insitute Co., Ltd. , which makes us professional and trustworthy.