Kinte Materials Science and Technology Co.,Ltd
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60/40 Polyester Epoxy Resin with Excellent Leveling for Hybrid Powder Coatings
◎Introduction
HH2686P is a carboxyl polyester resin designed for 60/40 hybrid powder coatings.
After years of development, powder coatings have made great progress, and their market shares and application fields have continued to expand. Amorphous polyester resins are currently mainly used in powder coatings. A remarkable feature of amorphous polyester resins is that there is a positive correlation between their glass transition temperature and melt viscosity, that is, the higher the viscosity, the higher the glass transition temperature. However, for powder coatings, polyester resins are expected to have a high glass transition temperature to ensure storage stability, and polyester resins are expected to have low melt viscosity, so that they have excellent flow properties. A coating with better wetting properties to pigments, resulting in better leveling properties.
The Tg of HH2686P is relatively low, and the melt viscosity is relatively low, so the powder coating prepared from it has excellent fluidity, and the polyester resin has better wetting performance for the pigment during curing, so as to obtain better leveling performance .
◎Basic Features
Popular type of polyester resin
Excellent leveling for highlight
Outstanding mechanical properties
Suitable to flatness system
◎Recommend Formulation:
NH3307GT/TGIC
| Material | HH2686P | E12 | BASO4 | 8000Ba | Leveling Agent | Benzoin | 701 |
| Formula | 180 | 120 | 102 | 90 | 4 | 2 | 2.5 |
◎Specifications:
| Appearance | white or light yellow transparent flakes |
| Color (50% DMF) | Max: 3 |
| Acid Value (mgKOH/g) | 50～60 |
| Softening Point (℃) | 95～105 |
| Glass Transition Temp. (℃) | ～53 |
| Melting Viscosity (200℃, ICI, mPa·s) | 2500～4500 |
| Reactivity at 180℃ (s, 40% Epoxy) | 240～360 |
| 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) | 28~30 | |
| Gloss (60°) | ≥90% | |
| Bending (φ1mm) | Pass | |
| Adhesive (1mm, grade) | 0 | |
| Pencil Hardness | 1H | |
| Impact (50cm) | Pass | |
◎Remarks:
All the polyester resins could be customized to Non-tin (A), anti gas burners (G), tribo gun (T) and anti-blooming (F).
◎Company Profile:
Kinte Materials Science and Technology Co., Ltd. is subordinate to China Machinery Industry Corporation (a key state-owned enterprise directly managed by SASAC, ranking 284 among the world's top 500 in 2021). It is a national high-tech enterprise under China National Electric Apparatus Research Institute Co., Ltd. (Stock Code: 688128), a listed enterprise on the SSE STAR MARKET. Focusing on the R & D, production, and sales of environmentally friendly coatings (powder coatings, waterborne industrial coatings) and powder coating resins, the company is committed to improving the global market competitiveness of China's environmentally friendly coating industry. Now it has become the leader and promoter in China’s technological development of environmentally friendly coatings as well as polyester resins for powder coatings!
In 2017, the new production base with 80000 tons annual capacity was put into construction in Dongguan, Guangdong, and the annual production capacity reached 120000 tons by the end of 2020, opening the road to global diversified development.