Kinte Materials Science and Technology Co.,Ltd
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Super Durable Isocyanate Polyester Resin NH7808 with Good Flowability
◇ Applications:
NH7808 is a hydroxylated polyester resin for polyester/isocyanate powder coating system.
◇ Basic features:
Excellent leveling
Good mechanical properties
Good chemical resistance
◇ Specifications:
Appearance White or pale yellow transparent flake
Color (50%DMF): max: 2
Hydroxyl Value(mg KOH/g): 25～35
Softening point(℃): 102～112
Glass transition temp.(℃): ～59
Melting viscosity(200℃, cone/plate, mPa·s): 9000±500
Reactivity at 180℃(s, 17% B1530): 560±100
◇ Recommend Formulation:
| NH7808 | Hardener | Filler ＆ pigment | Leveling agent | Benzoin |
| 200 | 40 | 125 | 4.5 | 2.5 |
◇ 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
Film thickness: 50～70μm
Degreased cold-rolled steel 0.5mm
◇ Curing Requirement: 200℃×15min
◇ Film Properties:
Gel time(180℃,sec): 660~900
Horizontal flow:(180℃), mm: 27~31
Gloss(60°): ≥85%
Bending(φ1mm): Pass
Adhesive(1mm,grade): 0
Pencil hardness ≥1H
Direct 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.
