Kinte Materials Science and Technology Co.,Ltd
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93:7 Polyester Resin NH3308 in TGIC Cure System with Good Outdoor Durability and Mechanical Properties
NH3308 is a saturated carboxyl polyester resin for polyester/TGIC powder coating system, designed as general purpose resin for low gloss powder coatings with good outdoor durability and mechanical properties.
Using TGIC curing system, it has excellent heat resistance, weather resistance, light resistance, corrosion resistance, chemical resistance and mechanical properties, and is mostly used outdoors, such as construction machinery, heavy trucks, containers and other heavy machinery.
☉Recommend Formulation: NH3308—TGIC
| NH3308 | TGIC | Filler ＆ pigment | Leveling agent | Benzion | 701 |
| 558 | 42 | 383 | 8 | 4 | 5 |
☉Basic Features:
Excellent Leveling
Excellent Mechanical Properties
Good Storage Stability
Good Weathering Resistance
Good Extinction Performance
☉Specifications I:
| Appearance | White or Light Yellow Transparent Flakes |
| Color (50% DMF) | max:3 |
| Acid Number (mgKOH/g) | 30～36 |
| Softening Point (℃) | 103～113 |
| Glass Transition Temp. (℃) | ～65 |
| Melting Viscosity (200℃, cone/plate, mPa·s) | 4500～6000 |
| Reactivity at 180℃ (s, 7% TGIC) | 200～300 |
| Curing Requirement | 200℃×10min |
| Packaging | PE Bags, Net Weight 25kg±0.1kg / bag |
☉Specifications II:
| 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 | 50～70μm | |
| Degreased Cold-rolled Steel | 0.5mm | |
| Film Properties | Gel Time (180℃, sec) | 250~400 |
| Horizontal Flow (180℃, mm) | 25~29 | |
| Gloss (60°) | ≥85% | |
| Bending (φ1mm) | Pass | |
| Adhesive (1mm, grade) | 0 | |
| Pencil Hardness | ≥1H | |
| Impact (50cm) | Pass 50kg·cm | |
☉More Codes:
| Code | Ratio | Cure Cycle | AV (mgKOH/g) | Viscosity (mPa.s/200℃) | Tg (℃) | Reactivity (s/180℃) | Properties |
| NH-3305 | 93/7 | 200℃*10min | 31~35 | 4600～6200 | ~65 | 160-280 | General purpose resin with excellent leveling, good weathering resistance, good mechanical properties and chemical resistance. Good storage stability and excellent anti-yellowing. Cost-effective. |
| NH-3306 | 93/7 | 200℃*10min | 31~36 | 8200~9800 | ~69 | 140-200 | Excellent storage stability, good heat resistance and anti-yellowing. Suitable for sand texture and wrinkle texture powder coatings. |
| NH-3307 | 93/7 | 200℃*10minn | 30~35 | 4000~6000 | ~67 | 200-260 | General purpose resin for aluminum profile powder coatings with high Tg, outstanding flow and excellent outdoor durability. |
| NH-3308 | 93/7 | 200℃*10min | 30~36 | 4500~6000 | ~65 | 200-300 | General purpose resin for low gloss powder coatings with good outdoor durability and mechanical properties. |
| NH-3309 | 93/7 | 200℃*15min | 30~35 | 2900~4100 | ~60 | 300-400 | Excellent flow, good chemical resistance. |
| NH-3309C | 93/7 | 200℃*15min | 29~35 | 3500~4200 | ~60 | 380-450 | Excellent flow, enhanced outdoor durability. |
☉Remarks: All the polyester resins could be customized to Non-tin (A), anti gas burners (G), tribo gun (T) and anti-blooming (F).
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