Isocyanate Polyester Resins for Urethane Powder Coatings
NH7401 is a saturated hydroxyl-terminated polyester resin designed for polyester / isocyanate powder coating to be cured at 200ºC.
Basic Features
Excellent resistance to chemicals
Outstanding durable weatherablity
Used for polyurethane powder coating
Recommend Formulation:
| NH7401 |
B1530 |
Filler & pigment |
Leveling agent |
Benzoin |
| 100 |
150 |
125 |
4.5 |
2.5 |
Specifications:
| Appearance |
White or pale yellow transparent flake |
| Color (50% DMF) |
max:2 |
| Hydroxyl Value (mgKOH/g) |
280~320 |
| Softening Point (ºC) |
102~110 |
| Glass Transition Temp. (ºC) |
~60 |
| Melting Viscosity (200ºC, cone/plate, mPa·s) |
5000±2000 |
| Reactivity at 180ºC (s, 60% B1530) |
70~250 |
| Curing Requirement |
200ºC×15 min |
| 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 |
| Application Condition |
Electrostatic Spraying With |
40~70KV |
| Coating Film Thickness |
50~100μm |
| Degreased Cold-rolled Steel |
0.5mm |
| Film Properties |
Gel Time (180ºC, sec) |
480~780 |
| Horizontal Flow (180ºC, mm) |
28~32 |
| Gloss (60°) |
≥85% |
| Bending (φ1mm) |
Pass |
| Adhesive (1mm, grade) |
0 |
| Pencil Hardness |
≥1H |
|
Storage Test (40ºC, 24hr)
|
Good |
More Code
| Code |
Ratio |
Cure Cycle |
Acid Value (mgKOH/g) |
Viscosity (mPa.s/200ºC) |
Tg (ºC) |
Reactivity (s/180ºC) |
Properties |
| NH7401 |
40/60 |
200ºC×15 min |
280~320 |
7000~11000 |
~55 |
130-250 |
High hydroxyl value resin. For one shot matt PU formulations with NH7805. |
| NH7405 |
40/60 |
200ºC×15 min |
280~320 |
3000~5000 |
~55 |
120-240 |
High hydroxyl value super durable resin. For one shot matt PU formulations with NH7803. |
| NH7603 |
65/35 |
200ºC×15 min |
90~120 |
3000~6000 |
~59 |
110-210 |
Excellent flow and good solvent resistance. |
| NH7803 |
80/20 |
200ºC×15 min |
35~45 |
3000~5000 |
~57 |
300-420 |
Low hydroxyl value super durable resin. For one shot matt PU formulation with NH7405. |
| NH7805 |
80/20 |
200ºC×20 min |
35~45 |
3500~6500 |
~61 |
240-400 |
Excellent flow, good mechanical properties, and good outdoor durability. |
| NH7807 |
84/16 |
200ºC×15 min |
27~33 |
9500~10500 |
~62 |
300-400 |
Good flow and stain resistance. |
| NH7808 |
84/16 |
200ºC×15 min |
25~35 |
7500~10500 |
~59 |
460-660 |
Excellent flow, good mechanical properties, and outdoor durability. |
| NH7809 |
84/16 |
200ºC×15 min |
25~35 |
9000~13000 |
~66 |
420-620 |
Outstanding mechanical properties, and excellent outdoor durability. For architectural profile and home appliance filed. |
| NH7908 |
88/12 |
200ºC×15 min |
20~25 |
9000~12000 |
~57 |
350-580 |
For low-hardener demand formulation. Good flow and mechanical properties. |
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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