70/30 Hybrid Polyester Resin for Low Gloss Powder Coatings

• CAS No.: 25135-73-3
• Formula: /
• EINECS: /
• Molecular Principal Chain: High-Molecular Polymer
• Color: White
• Ratio: 70:30
• Model NO.: HH2782GT
• Type: Hybrid System
• Acid Value (Mgkoh/G): 29-34
• Transport Package: 25kg/Bag
• Trademark: KINTE
• Origin: China
• HS Code: 3907999000
• Production Capacity: 80000 Tons Per Year

Product Description

70/30 Polyester Epoxy Resin with excellent gas oven stability for Low Gloss Powder Coatings
HH2782GT is tribo version of HH2782G, it 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.
Models with a G indicate powder coatings made with this polyester resin that is suitable for direct fired furnace curing.
Powder coatings are solvent-free, non-polluting, recyclable, environmentally friendly, save energy and resources, reduce labor intensity, and have high mechanical strength of the coating film, so they have developed rapidly and are widely used in home appliances, automotive coatings, aluminum alloy doors, and windows, as well as metal and non-metallic coatings. Metal exterior decorative paint protection. At present, there are basically three heating methods on the coating production line: electric heating, gas heating, and oil heating. In many areas of our country, due to the shortage and high cost of industrial electricity, diesel, natural-gas, etc. are widely used as heat sources for heaters in coating lines. However, directly heated by a gas furnace, the baking of the gas will affect the surface color of the powder coating, thereby affecting the final coating effect.
And HH2782GT is a kind of polyester resin for direct-fired furnace-resistant powder coatings, which achieves the purpose of preparing powder coatings that are resistant to direct-fired furnace heating so that the surface color will not be affected when the coating production line is heated by gas.


Basic Features
Outstanding mechanical properties
Good leveling
Good storage stability
Good Chemical resistance
TMA free


Recommend Formulation:   

HH2782GT	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	50~70μm
	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

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.