50/50 Hybrid Polyester Epoxy Resin with Low Temperature Curing at 160°C
◎Introduction
HH2562A is a saturated polyester resin, the tin-free version of HH2562. Mainly used for 50/50 polyester/epoxy hybrid powder coatings, which can achieve low temperature curing at 160°C.
Epoxy polyester hybrid powder coating is mainly composed of hydroxyl terminated polyester resin and epoxy resin. The two resins are curing agents for each other. This powder coating takes into account the anti-corrosion performance of epoxy resin and the weather resistance of polyester resin. It is commonly used in the coating of indoor household appliances and the surface coating of electrical instruments and switch cabinets.
Models with an A indicate that this polyester resin is tin-free, which is mainly prepared by using tin-free catalysts.
Organotin catalysts have high activity and are currently commonly used as catalysts for polyesters used in general powder coatings. However, there have been many non-industrial organotin poisoning incidents in recent years, which has aroused the concern of all parties on the toxicity of organotin. At present, organotin compounds have been identified as endocrine disruptors and important persistent toxic substances.
Therefore, many countries and regions, as well as some international well-known brands, require that the finished powder coating be free of tin. HH2562A is completely free of tin, can meet the needs.
◎Basic Features
Good leveling
Good mechanical properties
Lower curing temperature
Excellent chemical resistance
◎Recommend Formulation:
| HH2562A | E12 | Filler ＆ Pigment | Leveling | Benzoin | 701 |
| 300 | 300 | 381 | 10 | 4 | 5 |
◎Specifications:
| Appearance | White or pale yellow transparent flakes |
| Acid Value (mgKOH/g) | 68～75 |
| Softening Point (℃) | 95～105 |
| Glass Transition Temp. (℃) | ～54 |
| Melting Viscosity (200℃, ICI, mPa·s) | 2200~3500 |
| Reactivity at 180℃ (s, 50% 014U) | 50~150 |
| Curing Requirement | 160℃×15-20min |
| 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) | 60~160 |
| Horizontal Flow (180℃, mm) | 21~26 |
| Gloss (60°) | ≥90% |
| Bending (φ1mm) | Pass |
| Adhesive (1mm, grade) | 0 |
| Pencil Hardness | ≥1H |
| Impact (50cm) | Pass |
◎Remarks:
All the polyester resins could be customized to Non-tin (A), anti gas burners (G), tribo gun (T) and anti-blooming (F).
◎More Codes:
| Code | Ratio | Cure Cycle | AV (mgKOH/g) | Viscosity (mPa.s/200℃) | Tg (℃) | Reactivity (s/180℃) | Properties |
| HH2562 | 50/50 | 160℃*15min | 67~75 | 1500~3500 | ~54 | 50-150 | For low bake formulation. Good mechanical properties. It could also be cured at 170℃/10min |
| HH2562A | 50/50 | 160℃*15-20min | 68~75 | 2200~3500 | ~54 | 50-150 | The tin-free version of HH2562 |
| HH2563 | 50/50 | 160℃*15min | 67~75 | 2000~4500 | ~54 | 80-180 | For low bake formulation. Excellent mechanical properties and good flow. |
◎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.
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