Tma Free 70/30 Hybrid Polyester Resins for Thermosetting Powder Coatings

• CAS No.: 25135-73-3
• Formula: /
• EINECS: /
• Molecular Principal Chain: High-Molecular Polymer
• Color: White
• Ratio: 70:30
• Model NO.: HH2782G
• Type: Hybrid System
• Acid Value (Mgkoh/G): 29-35
• Transport Package: 25kg/Bag
• Trademark: KINTE
• Origin: China
• HS Code: 3907999000
• Production Capacity: 80000 Tons Per Year

Product Description

TMA Free 70/30 Thermosetting Hybrid Curing Polyester Powder Coating Resins
HH2782G is a carboxyl polyester resin designed for 70/30 hybrid powder coatings with excellent gas oven stability. Can be used with B68 for low gloss with good performance.
Powder coating is a solvent-free, 100% solid powder coating, which is solvent-free, pollution-free, recyclable, environmentally friendly, saves energy and resources, reduces labor intensity, and has high mechanical strength of the coating film. According to the use environment of the coated device, such as electrical appliances used under high temperature conditions, there are higher requirements for the heat resistance of powder coatings, especially for products that require the color of the coating to be white, it is difficult to ensure that the coating has a good quality Heat resistance while maintaining coating quality that does not change during use.
Common heat-resistant powder coatings currently on the market can be used for radiators heated by steam or hot water. This powder coating is baked at 180°C to 230°C for 20 minutes, and the color change of the coating is small, but at 180°C The color changes greatly when baking for about 24 hours. Therefore, the use of electrical appliances under high heat and long-term conditions, such as electric heating oil whose surface temperature generally exceeds about 115 degrees during use, cannot be painted with ordinary powder coatings. The electrical appliance is required to maintain the quality of the coating without major changes in the long-term use of the electrical appliance at high temperature.
The direct-fired furnace-resistant powder coating is used for spraying on the surface of electrical appliances with higher operating temperatures, which can ensure that the coating has good heat resistance while maintaining the quality of the coating that does not change during use.


Basic Features
Outstanding Mechanical Properties
Good Leveling
Good Storage Stability
Good Chemical Resistance
TMA Free


Recommend Formulation:   

HH2782G	Epoxy Resin	TIO2	BaSO4	Leveling Agent	Benzoin	701
210	90	102	90	4	2	2.5

Specifications:

Appearance	white or light yellow transparent flakes
Color (50% DMF)	Max: 2
Acid Value (mgKOH/g)	29~34
Softening Point (ºC)	100~110
Glass Transition Temp. (ºC)	~60
Melting Viscosity (200ºC, cone/plate, mPa·s)	5800~7000
Reactivity at 180ºC (s, 30% Epoxy)	180~280
Curing Requirement	180ºC×15min / 200ºC×10min
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)	200~300
	Horizontal Flow (180ºC, mm)	24~28
	Gloss (60°)	≥90%
	Bending (φ1mm)	Pass
	Adhesive (1mm, grade)	0
	Pencil Hardness	1H
	Impact (50cm)	Pass

More Codes:

Code	Ratio	Cure Cycle	AV (mgKOH/g)	Viscosity (mPa.s/200ºC)	Tg (ºC)	Reactivity (s/180ºC)	Properties
HH2781	70/30	180ºC*10min	30~36	4500~6500	~56	120-240	Economic resin. Fast Cure, good flow and impact resistance. TMA free.
HH2781T	70/30	180ºC*10min	30~36	4000~5500	~55	100-200	HH2781T is tribo chargerable of HH2781.
HH2782G	70/30	180ºC*15min	29~35	5800~7000	~60	180-280	Good storage stability, good balance of properties. TMA free.
HH2783	70/30	180ºC*15min	29~35	4500~6500	~57	180-300	General purpose resin. Excellent mechanical properties, good flow, good balance of 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.