96:4 Primid Blended Polyester Resin for Low Gloss Powder Coatings
NH6688A is NH6688 with TIN-FREE formulation, it is saturated carboxyl polyester resins for low gloss polyester/primid (96:4) powder coatings by dry blending procedure.
At present, powder coatings for outdoor use are usually cured with TGIC. However, due to the physiological toxicity of TGIC, it has been banned by the European Union and other places. Therefore, the use of environmentally friendly and non-toxic HAA to replace TGIC has become the trend in the powder coating industry.
With the change in people's aesthetic concepts and the problem of light pollution caused by high-gloss coatings, matte powder coatings that can produce soft surface effects are more and more widely used.
Dry-blending matting method is a commonly used method for preparing matte powder coatings. This method uses different polyesters with large differences in reactivity during the curing process. Due to the difference in reactivity, the coating surface produces a microscopically rough surface to achieve a matting effect. , using this method, the gloss of 18-45 can be obtained without adding a matting assistant, and the comprehensive cost is low.
Basic Features
Low gloss film
Excellent mechanical properties
Good leveling, good storage stability
Good chemical resistance, fine anti-yellowing
Recommend Formulation:
| Formulation |
NH6381A |
NH6688A |
T-105 |
Filler & pigment |
Leveling agent |
Benzion |
| I |
200 |
- |
15 |
150 |
2.4 |
1.2 |
| II |
- |
200 |
7.5 |
150 |
2.4 |
1.2 |
Specifications:
| Appearance |
Pale yellow flakes |
| Color (50% DMF) |
≤3 |
| Acid Value (mgKOH/g) |
19~24 |
| Softening Point (ºC) |
100~110 |
| Glass Transition Temp. (ºC) |
~58 |
| Melting Viscosity (200ºC, cone/plate, mPa·s) |
4800~6400 |
| Reactivity at 180ºC (s, 4% XL552) |
220~280 |
| Curing Requirement |
180ºC×15min |
| 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 |
Gloss (60°) |
≤40% |
| Bending (φ2mm) |
Pass |
| Adhesive (1mm, grade) |
0 |
| Pencil Hardness |
≥1H |
| Direct Impact Resistance |
Pass 50kg·cm |
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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