Isocyanate Saturated Polyester Resin for Durable PU Powder Coatings

• Customization: Available
• CAS No.: 25135-73-3
• Formula: /
• Model NO.: NH7807
• EINECS: /
• Molecular Principal Chain: High-Molecular Polymer
• Color: White
• Ratio: 84/16
• Cure Time: 200 Celsius * 15min
• Hydroxyl Number (Mgkoh/G): 27-33
• Transport Package: 25kg/Bag
• Trademark: KINTE
• Origin: China
• HS Code: 3907999000
• Production Capacity: 80000 Tons Per Year

Product Description

Durable Isocyanate Polyester Resin for PU Powder Coatings

NH7807 is a saturated hydroxyl-terminated polyester resin designed for polyester / isocyanate powder coating system.

Basic Features

Excellent leveling

Excellent mechanical properties

High weathering resistance

Good solvent resistance

Recommend Formulation:   

NH7807	Hardener	Filler & pigment	Leveling agent	Benzoin
523	130	334	10	3

Specifications:

Appearance	White or pale yellow transparent flake
Color (50% DMF)	max:2
Hydroxyl Value (mgKOH/g)	27~33
Softening Point (ºC)	105~115
Glass Transition Temp. (ºC)	~62
Melting Viscosity (200ºC, cone/plate, mPa·s)	10000±500
Reactivity at 180ºC (s, 16.7% B1530)	350±50
Curing Requirement	200ºC×20 min
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)	500~600
	Horizontal Flow (180ºC, mm)	27~31
	Gloss (60°)	≥90%
	Bending (φ1mm)	Pass
	Adhesive (1mm, grade)	0
	Pencil Hardness	≥1H
	Impact (direct 40cm)	Pass

More Code

Code	Ratio	Cure Cycle	Acid Value (mgKOH/g)	Viscosity (mPa.s/200ºC)	Tg (ºC)	Reactivity (s/180ºC)	Properties
NH7401	40/60	200ºC×15 min	280~320	7000~11000	~55	130-250	High hydroxyl value resin. For one shot matt PU formulations with NH7805.
NH7405	40/60	200ºC×15 min	280~320	3000~5000	~55	120-240	High hydroxyl value super durable resin. For one shot matt PU formulations with NH7803.
NH7603	65/35	200ºC×15 min	90~120	3000~6000	~59	110-210	Excellent flow and good solvent resistance.
NH7803	80/20	200ºC×15 min	35~45	3000~5000	~57	300-420	Low hydroxyl value super durable resin. For one shot matt PU formulation with NH7405.
NH7805	80/20	200ºC×20 min	35~45	3500~6500	~61	240-400	Excellent flow, good mechanical properties, and good outdoor durability.
NH7807	84/16	200ºC×15 min	27~33	9500~10500	~62	300-400	Good flow and stain resistance.
NH7808	84/16	200ºC×15 min	25~35	7500~10500	~59	460-660	Excellent flow, good mechanical properties, and outdoor durability.
NH7809	84/16	200ºC×15 min	25~35	9000~13000	~66	420-620	Outstanding mechanical properties, and excellent outdoor durability. For architectural profile and home appliance filed.
NH7908	88/12	200ºC×15 min	20~25	9000~12000	~57	350-580	For low-hardener demand formulation. Good flow and mechanical 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.