Super Durable HAA Blended Polyetser Resin for Low Gloss Powder Coating
NH6381A/NH6688A are saturated carboxyl polyester resins for low gloss polyester/primid powder coatings by a dry blend procedure.
Models with an A indicate that this polyester resin is tin-free, which is mainly prepared by using tin-free catalysts.
The organic tin catalyst has high activity, and the polyester products produced by using it are white in color, and its performance meets the requirements of powder coatings. Therefore, it is currently used as a catalyst for polyesters for general-purpose powder coatings. However, several non-industrial poisoning incidents of organotin have occurred in recent years, which has aroused the concern of all parties regarding the toxicity of organotin. At present, organotin compounds have been identified as endocrine disruptors and important persistent toxic substances.
The standard IOS-MAT-0054 (V9) formulated by I-KEA with reference to EN71-3:2013 does not allow the use of any kind of organotin compounds, and this resin is completely free of tin, and the powder coatings prepared with it can be exported to the European Union for application to Toys, I-KEA furniture, etc.
Basic Features
Low gloss film
Excellent storage stability
Good resistance to chemicals and fine anti-yellowing
Super durable weatherablity
Recommend Formulation:
| Formulation |
NH6381A |
NH6688A |
XL552 |
Filler & pigment |
Leveling agent |
Benzion |
| I |
200 |
- |
15 |
150 |
2.4 |
1.2 |
| II |
- |
200 |
7.5 |
150 |
2.4 |
1.2 |
Specifications:
| |
NH6381A |
NH6688A |
| Appearance |
pale yellow flake |
pale yellow flake |
| Color (50% DMF) |
≤3 |
≤3 |
| Acid Number (mgKOH/g) |
48~54 |
19~25 |
| Softening Point (ºC) |
102~112 |
100~110 |
| Glass Transition Temp. (ºC) |
~60 |
~56 |
| Melting Viscosity (200ºC, cone/plate, mPa·s) |
2800~4800 |
4500~7500 |
| Reactivity at 180ºC (s, 7%,4% XL552) |
60~150 |
250~500 |
| Curing Requirement |
180ºC×15min or 200ºC×10min |
| Packaging |
PE Bags, Net Weight 25kg ± 0.1kg / bag |
Specifications II:
| Extrusion Condition |
Two-screw Extruder |
| Zone I: 90~110ºC |
Zone II: 110~120ºC |
| Speed of Revolution |
500~1200rpm |
| Fineness of Powder |
<100μm |
| Blending Extrudate I and II with weight ratio 1:1 before grinding. |
| Application Condition |
Electrostatic Spraying With |
40~70KV |
| Coating Film Thickness |
50~80μm |
| Degreased Cold-rolled Steel |
0.5mm |
| Film Properties |
|
NH6381A |
NH6688A |
| Gel Time (180ºC, sec) |
60~150 |
250~450 |
| Flow (180ºC, mm) |
22~25 |
23-28 |
| Gloss (60°) |
≤40% |
| Adhesive (1mm, grade) |
0 |
| Pencil Hardness |
1H |
| Direct Impact Resistance (50cm) |
Pass |
| Storage Test (40ºC, 24hr) |
Good |
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 Certificates. Due to the excellent and stable quality, our products always enjoy a high reputation at home and overseas, and were sold to more than 30 countries.
The polyester resin branch was founded in 2000, now there are two factories (DongGuan factory and TaiXing Factory) with an annual production capacity of 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 to 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 a brilliant future with you together.
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