First-rate Economical Polyester Resin NH9306 with Excellent Mechanical Property and Weathering Resistance

◇ Applications:

NH-9306 is a carboxyl polyester resin designed for 93/7 polyester/TGIC powder coatings to be cured at 200℃.

◇ Basic features:

Excellent weathering resistance

Good storage stability

Improved mechanical properties compared with NH9307

◇ Specifications:

Appearance: light yellow or white transparent flakes

Color(50%DMF) max:3

Acid number(mgKOH/g): 30-36

Softening point(℃): 101～113

Glass transition temp.( ℃): ～62

Melting viscosity(mPa.s200℃): 5000±1500

Reactivity at 180℃(s, 7% TGIC): 180±60

◇ Recommend Formulation:NH9306—TGIC

◇ Extrusion Condition:

Two-screw extruder

Zone I: 90～110℃ Zone II: 110～120℃

Speed of revolution: 500-1200 rpm

Fineness of powder: ＜100μm

◇ Application Condition:

Electrostatic spraying with: 40～70KV

Degreased cold-rolled steel: 0.5mm

Film thickness: 50～70μm

◇ Curing Requirement: 200℃×15 min

◇ Film Properties:

Gel time (180℃, s): 200-350

Flow(180℃,mm): 24~28

Gloss(60°): ≥85%

Adhesive(1mm,grade): 0

Pencil hardness: ≥1H

Bending (φ1mm): Pass

Impact: pass 50 kg·cm

◇ Packaging:

PE bags, N.W. 25KG±0.1KG / bag