Kinte Materials Science and Technology Co.,Ltd
Details make classics, and quality achieves future
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Economical Polyester resin HH2781 fast curing good flow and impact resistance TMA free
HH2781T is t a carboxyl polyester resin designed for 70/30 hybrid powder coatings.
Trimellitic anhydride (TMA) is an important chemical intermediate and an important raw material for polyester resin, polyimide resin, PVC heat-resistant plasticizer, epoxy resin curing agent, dye capacitor impregnating oil and adhesives and other products. However, TMA is respiratory sensitizing, and can cause severe and permanent damage to lung function if exposed for prolonged periods of time and without intervention. In order to comply with environmental protection requirements, the application of non-TMA resins will become a future trend.
HH2781 is a completely TMA free hybrid polyester resin.
◇Basic Features:
Good mechanical properties
Good leveling
Good reactivity
◇Specifications:
| Appearance | White or Light Yellow Transparent Flakes |
| Color (50% DMF) | max:3 |
| Acid Number (mgKOH/g) | 30～36 |
| Softening Point (℃) | 95～105 |
| Glass Transition Temp. ( ℃) | ～56 |
| Melting Viscosity (ICI, mPa·s/200℃) | 4500～6500 |
| Reactivity at 180℃ (s, 30% Epoxy) | 120～240 |
◇Recommend Formulation:
| HH-2781 | E14U | Filler ＆ Pigment | Leveling Agent | Benzoin | Leveling additive 701 |
| 210 | 90 | 192 | 4 | 2 | 2.5 |
◇More Codes:
| Code | Ratio | Cure Cycle | AV (mgKOH/g) | Viscosity (mPa.s/200℃) | Tg (℃) | Reactivity (s/180℃) | Properties |
| HH-2781 | 70/30 | 180℃*10min | 30~36 | 4500~6500 | ~56 | 120-240 | Economic resin. Fast Cure, good flow and impact resistance. TMA free. |
| HH-2781T | 70/30 | 180℃*10min | 30~36 | 4000~5500 | ~55 | 100-200 | HH2781T is tribo chargerable of HH2781. |
| HH-2782G | 70/30 | 180℃*15min | 29~35 | 5800~7000 | ~60 | 180-280 | Good storage stability, good balance of properties. TMA free. |
| HH-2783 | 70/30 | 180℃*15min | 29~35 | 4500~6500 | ~57 | 180-300 | General purpose resin. Excellent mechanical properties, good flow, good balance of properties. |
◇ Packaging:PE bags, N.W. 25KG±0.1KG / bag
Remarks:all the polyester resins could be customizes 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!