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Address: 16th Yufeng Road, HuaDu District , Guangzhou,China
Contact name:Yarly ，Carolyn
Kinte Materials Science and Technology Co.,Ltd |
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Durable 93/7 Saturated TGIC Polyester Resins for Low Curing Powder Coatings
◎Introduction
NH3363 is a saturated carboxyl polyester resin for polyester/TGIC powder coating system, it is designed for low temperature curing powder coatings, which is cost-effecive and well-performed.
Powder coating and coating has become one of the rapidly developing coating varieties due to its characteristics of resource saving, energy saving, pollution-free, high labor production efficiency and easy to realize automatic coating. Now it has become a recognized 4E type coating product with high production efficiency, excellent film performance, eco-friendly and economical.
In thermosetting powder coatings, leveling agents are one of the essential additives in the composition of powder coatings. Whether it is high-gloss, glossy, semi-gloss, matt or matt powder coatings, leveling agents must be added to powder coating formulations. Compared with liquid coatings, the leveling of powder coatings is much more difficult than that of liquid coatings, and the leveling of powder coatings is also much worse than that of liquid coatings, which has a lot to do with the fact that powder coatings do not contain solvents. The film-forming process of powder coatings relies on the flow of resin in the molten state and adhesion to each other. The high melt viscosity restricts its free flow, and the leveling effect is slightly poor, with slight orange peel. Improving the leveling of powder coating film and forming a coating film with good appearance has always been the focus of the powder coating industry.
Powder coatings generally improve the leveling properties of powder coatings by adding leveling agents. By balancing the surface tension gradient of the coating film, the Bernard vortex effect is relieved, the orange peel is relieved, and the coating film has better leveling properties.
◎Basic Features
Low Curing Temperature
Excellent Leveling
Good Mechanical Properties
Good Weathering Resistance
◎Recommend Formulation:
NH3363 | TGIC | Filler ＆ Pigment | Leveling Agent | Benzoin | 701 |
| 558 | 42 | 383 | 8 | 4 | 5 |
◎Specifications I
| Appearance | White or Light Yellow Transparent Flakes |
Color (50% DMF) | Max:1 |
| Acid Number (mgKOH/g) | 31～36 |
| Softening Point (℃) | 103～113 |
| Glass Transition Temp. ( ℃) | ～60 |
| Melting Viscosity (ICI, mPa·s/200℃) | 3700～5300 |
| Reactivity at 180℃ (s, 7% TGIC) | 120～180 |
| Curing Requirement | 160℃×10~15min |
| Packaging | PE Bags, Net Weight 25kg ± 0.1kg / bag |
◇Extrusion Condition:
Two-screw Extruder
Jacket Temperature: 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) | 120~180 |
| Horizontal Flow (180℃, mm) | 22~24 |
| Bending (φ1mm) | Pass |
| Adhesive (1mm, grade) | 0 |
| Pencil Hardness | ≥1H |
| Impact (50cm) | Pass |
◎More Code
| Code | Ratio | Cure Cycle | AV (mgKOH/g) | Viscosity (mPa.s/200℃) | Tg (℃) | Reactivity (s/180℃) | Properties |
| NH3362 | 93/7 | 160℃*15min | 31~36 | 3700~5300 | ~62 | 40-100 | For low bake powder coatings with excellent blooming resistance and outdoor durability, suitable for engineering machinery. |
| NH3363 | 93/7 | 160℃*10min | 31~36 | 3700~5300 | ~60 | 40-100 | General purpose resin to be cured at 160℃. Good flow, good outdoor durability and mechanical properties. |
| NH3365 | 93/7 | 160℃*15minn | 31~36 | 4500~6500 | ~63 | 80-180 | General purpose resin to be cured at 160℃. Very good flow, excellent outdoor durability and mechanical properties. |
| NH3366 | 93/7 | 160℃*15min | 31~36 | 4500~6500 | ~62 | 80-180 | For low bake powder coatings with excellent blooming resistance and outdoor durability, suitable for engineering machinery. |
◎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!
We have gained ISO9001 and ISO14000, ISO18001, RoHS, UL certification and QUALICOAT Certificate. Due to the excellent and stable quality, our products always enjoy high reputation at home and oversea, and were sold to more than 30 countries.
Polyester resin branch was founded in 2000, now there are two factories (DongGuan factory and TaiXing Factory) with annual production capacity over 80,000 tons, and the annual production capacity reached 120000 tons by the end of 2020, opening the road to global diversified development. Our clients include many top-tier powder manufacturers in the world such as AKZO, PPG, TIGER, PROTECH, NIPPON, OXYPLAST, JOTUN, SHERWIN, VALSPAR, SINTERPLAST, etc.
We unremittingly stick at the business principle of “Quality is the life, adhere to first-class technology, first-class quality, first-class cost and first-class brand”. We would like to provide a complete set of services and solutions for both domestic and abroad customers and would like to go forward to brilliant future with you together.
