60:40 General Purpose Epoxy Polyester Resins for Hybrid Powder Coatings
HH2683 is a carboxyl polyester resin designed for 60/40 hybrid powder coatings for general purpose.
Powder flowability is the basic characteristic of powder, which refers to the ease of powder flow. Powder flow properties are related to many factors, such as powder particle size, shape, roughness, dry humidity, etc. In general, increasing the coefficient of friction between particles makes powder flow difficult. Generally, the powder flowability of spherical particles is the best, while the powder with irregular particle shape, small size and rough surface has poor flowability.
The glass transition temperature of the powder coating resin determines the flow properties and storage stability of the powder coating. The glass transition temperature increases, the stability of the powder increases, the agglomeration decreases, and the fluidity of the powder coating increases. The glass transition temperature increases with the increase of molecular weight. When the molecular weight increases to a certain extent, the glass transition temperature of the polymer does not change significantly. If the glass transition temperature is too high, the number average molecular weight of the resin is large, the melt viscosity is large, the fluidity is poor, and the mechanical properties of the powder coating film are reduced.
Basic Features
Good Flow
Excellent Mechanical Properties
Excellent Chemical Resistance
Good Storage Stability
Recommend Formulation:
| HH2683 |
E12 |
Filler & Pigment |
Leveling Agent |
Benzoin |
| 360 |
240 |
383 |
8 |
4 |
Specifications:
| Appearance |
Pale Yellow Transparent Flakes |
| Color (50% DMF) |
max:3 |
| Acid Number (mgKOH/g) |
48~54 |
| Softening Point (ºC) |
95~105 |
| Glass Transition Temp. ( ºC) |
~55 |
| Melting Viscosity (200ºC, cone/plate, mPa·s) |
2500~3800 |
| Reactivity at 180ºC (s, 40% Epoxy) |
120±30 |
| Curing Requirement |
180ºC×15min or 200ºC×10min |
| Packaging |
PE Bags, Net Weight 25kg±0.1kg / bag |
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: 50~70μm
Degreased cold-rolled steel: 0.5mm
Film Properties:
| Gel Time (180ºC, sec) |
160~220 |
| Horizontal Flow (180ºC, mm) |
26~30 |
| Gloss (60°) |
≥90% |
| Bending (φ1mm) |
Pass |
| Adhesive (1mm, grade) |
0 |
| Pencil Hardness |
≥1H |
| Impact (direct, reserve) |
Pass 50kg·cm |
More Code
| Code |
Ratio |
Cure Cycle |
AV (mgKOH/g) |
Viscosity (mPa.s/200ºC) |
Tg (ºC) |
Reactivity (s/180ºC) |
Properties |
| HH2682 |
60/40 |
180ºC*10min |
47~55 |
2500~3500 |
~56 |
150-250 |
For Fast cure formulation. High Tg, excellent flow and good mechanical properties. |
| HH2683 |
60/40 |
180ºC*15min |
47~55 |
2500~3500 |
~54 |
90-150 |
General purpose resin with good flow, good chemical resistance and mechanical properties. |
| HH2683B |
60/40 |
180ºC*15min |
47~55 |
2500~3500 |
~54 |
120-180 |
Non-tin version of HH2683. |
| HH2685 |
60/40 |
180ºC*20min |
47~55 |
2500~3500 |
~58 |
200-300 |
Excellent flow, high gloss. Suitable for alloy wheel-hub powder coatings. |
| HH2686 |
60/40 |
200ºC*10min |
52.5~57 |
3000~4500 |
~55 |
170-300 |
Economic general purpose resin. Excellent flow, good matting performance. |
| HH2686P |
60/40 |
200ºC*10min |
50~60 |
2500~4500 |
~55 |
240-360 |
General purpose resin. Excellent flow and strong anti-interference ability. Good balance of properties. Suitable for matt powder coatings. |
| HH2687 |
60/40 |
200ºC*10min |
51~66 |
3000~5000 |
~60 |
200-300 |
High Tg, excellent flow, good 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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