Dry-blended Polyester Resin NH5001/NH5508 for Low Gloss Two-component Powder Paint​

◇ Applications:

NH5001/NH5508 are saturated carboxyl polyester resins for low gloss polyester/TGIC powder coatings by a dry blending process.

◇ Basic features:

Remarkable flow and weatherability

Good mechanical properties

Good chemical resistance and fine anti-yellowing

Good storage stability

◇ Specifications:

                                                NH5001                          NH5508

Appearance:                   pale yellow flakes             pale yellow flakes

Color(50%DMF):                          ≤3                                   ≤2

Acid value(mgKOH/g):          46～54                             19～25

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

Glass transition temp.                  ~65                                  ~63

(Tg)( ℃):                                           

Melting viscosity:                    5100±800                        7200±800

(200℃, cone/plate, mPa·s)

Reactivity S:                               50±25                              420±120

(180℃, 10, 5% TGIC)

◇ 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 after 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°): ≤40%

Adhesive(1mm,grade): 0

Pencil hardness: ≥2H

Direct Impact Resistance: pass 50kg·cm

◇ 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)