Tma Free Polyester Epoxy Resin for 70/30 Hybrid Powder Coatings

• CAS No.: 25135-73-3
• Formula: /
• EINECS: /
• Molecular Principal Chain: High-Molecular Polymer
• Color: White
• Ratio: 70:30
• Model NO.: HH2784
• 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 Polyester Epoxy Resin for 70/30 Hybrid Powder Coatings
HH2784 is a carboxyl polyester resin designed for 70/30 hybrid powder coatings.
As a kind of paint with zero VOC emission, powder coating has the characteristics of high efficiency, resource saving, environmental protection and excellent comprehensive performance. Compared with traditional solvent-based coatings, powder coatings have obvious advantages. In many fields, powder coatings are gradually replacing traditional solvent-based coatings. At present, powder coatings have been widely used in the decorative coating and protection of most metals such as furniture, home appliances, toys, automobiles, high-speed guardrails, and aluminum alloy windows.
Although powder coatings have environmental advantages, with the tightening of environmental regulations, some application fields with skin contact and food contact characteristics have also restricted the raw materials used. In recent years, there have been several non-industrial poisoning incidents related to chemical substances in coatings, which have attracted great attention from all parties. Relevant departments have also issued relevant restrictive laws and regulations. For example, the EU REACH regulations clearly limit the amount of organotin in powder coatings. content, I-KEA stipulates that tin should not be contained in polyester powder coatings for toys and furniture. On June 27, 2018, EU REACH officially issued a notice to include trimellitic anhydride (TMA) in the SVHC candidate list, and pointed out that TMA has respiratory sensitization. If the exposure time is prolonged and no intervention measures are taken, trimellitic anhydride will cause serious damage to lung function. permanent damage.
As the main raw material of polyester powder coating, polyester resin plays a decisive role in the health and environmental protection characteristics of powder coating. HH2784 does not contain TMA, which fully meets the environmental protection requirements of EU REACH.


Basic Features
Good mechanical properties
Good storage stability
Good flow
TMA free


Recommend Formulation:   

HH2784	014U	TiO2 (R760)	BaSO4 8000	Leveling agent	Benzoin	701
210	90	102	90	4	2	2.5

Specifications:

Appearance	White or light yellow transparent flakes
Color (50%DMF)	max:3
Acid Value (mgKOH/g)	29~35
Softening Point (ºC)	98~103
Glass Transition Temp. (ºC)	~57
Melting Viscosity (200ºC, cone/plate, mPa·s)	4500~6500
Reactivity at 180ºC (s, 30% Epoxy)	240~360
Curing Requirement	180ºC×15min or 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)	240~360
	Horizontal Flow (180ºC, mm)	25~28
	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.