Haa Polyester Resin for Primid Powder Coating

• CAS No.: 25135-73-3
• Formula: /
• EINECS: /
• Molecular Principal Chain: High-Molecular Polymer
• Color: White
• Ratio: 95/5
• Model NO.: KK7701
• Type: Polyester/Haa Type
• Acid Value (Mgkoh/G): 30-37
• Transport Package: 25kg/Bag
• Trademark: KINTE
• Origin: China
• HS Code: 3907999000
• Production Capacity: 80000 Tons Per Year

Product Description

HAA Polyester Resin with Excellent Mechanical Properties for Primid Powder Coating
KK7701 is a saturated carboxyl polyester resin designed for Primid T-105 powder coating to be cured at 180ºC.
Powder coatings are solid powder synthetic resin coatings composed of solid resins, pigments, fillers, and additives. Different from common solvent-based coatings and water-based coatings, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation, and low energy consumption. However, compared with liquid coatings, powder coatings are easy to form pinholes, which affect the performance of the coating film, which is a problem that powder coatings must overcome. Many powder coating users will use benzoin for degassing, but while benzoin eliminates pinholes, it is also easy to cause yellowing of the coating film, and the problem is more prominent in the HAA system. We can use benzoin and degassing wax together to achieve the purpose of eliminating pinholes without yellowing the coating film.


Basic Features
Excellent mechanical properties
Good anti-yellowing
Pinhole free in thick films
Good weathering resistance and storage stability


Recommend Formulation:   
KK7701/HAA

KK7701	T-105	Filler & pigment	Leveling agent	Benzoin	701	703
200	10.5	133	2.8	1.4	1.4	1.4

Specifications:

Appearance	white or pale yellow transparent flakes
Color (50%DMF)	Max:2
Acid Value (mgKOH/g)	30~37
Softening Point (ºC)	98~108
Glass Transition Temp. (ºC)	~58
Melting Viscosity (200ºC, cone/plate, mPa·s)	4000±1000
Reactivity at 180ºC (s, 5% XL552)	280±60
Curing Requirement	180ºC×10min
Packaging	PE Bags, Net Weight 25kg ± 0.1kg / bag

Specifications II:

Extrusion Condition	Two-screw Extruder
	Jacket Temperature	100~110ºC
	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)	25~31
	Gloss (60°)	≥88%
	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.