96/4 Primid Polyester Resins for Excellent Flowability Powder Coatings

• CAS No.: 25135-73-3
• Formula: /
• EINECS: /
• Molecular Principal Chain: High-Molecular Polymer
• Color: White
• Ratio: 96/4
• Model NO.: NH6688K
• Type: Polyester/Primid Type
• Acid Value (Mgkoh/G): 20-25
• Transport Package: 25kg/Bag
• Trademark: KINTE
• Origin: China
• HS Code: 3907999000
• Production Capacity: 80000 Tons Per Year

Product Description

96/4 HAA Primid Saturated Polyester Resins with Excellent Flowability
NH6688K is a saturated carboxyl polyester resin designed for 96.5:3.5 Primid XL 552 powder coating to be cured at 180ºC.
Outdoor powder coating systems are divided into two categories: triglycidyl isocyanurate (TGIC) and hydroxyalkylamide (HAA) according to their curing systems. TGIC has a triazine ring epoxy structure, the prepared powder coating film has high hardness, clear and bright board surface, no pinholes in a thick coating, good weather resistance, yellowing resistance, and adjustable curing speed; Sensitivity and potential carcinogenicity, the European Union has clearly stipulated that it should not be used as a curing agent for powder coatings; in addition, due to its good compatibility with polyester, small molecular TGIC will produce relatively small molecules after adding it to polyester. With the strong plasticizing effect, so TGIC will greatly reduce the powder Tg, which in turn affects its storage stability. HAA has a highly active amide hydroxyl structure, which has the advantages of energy saving, non-toxicity, and mechanical properties. In addition, it has poor compatibility with polyester and does not reduce the powder Tg basically, so it does not affect the storage stability of the powder; at the same time, due to the HAA Due to its inherent chemical structure, even in the absence of catalysts, the curing speed is still very fast, and the leveling of the resulting coating cannot be satisfactory.
NH6688K solves the above problems, it has excellent leveling performance and surface fineness.


Basic Features
Excellent flowability
Good mechanical properties
Good resistance to chemicals and fine anti-yellowing


Recommend Formulation:   

NH6688K	T-105	Filler & Pigment	Leveling	Benzoin	701	703
579	21	380	8	4	4	4

Specifications:

Appearance	pale yellow flake
Color (50%DMF)	max:2
Acid Number (mgKOH/g)	20~25
Softening Point (ºC)	100~110
Glass Transition Temp. ( ºC)	~55
Melting Viscosity (ICI, mPa·s/200ºC)	7000±1000
Reactivity at 180ºC (s, 3.5% T-105)	240~360
Curing Requirement	180ºC/15min
Packaging	PE Bags, Net Weight 25kg ± 0.1kg / bag

Specifications II:

Extrusion Condition	Two-screw Extruder
	Zone I: 90~110ºC	Zone II: 100~110ºC
	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)	220~330
	Horizontal Flow (180ºC, mm)	23~27
	Gloss (60°)	≥88%
	Bending (φ1mm)	Pass
	Adhesive (1mm, grade)	0
	Pencil Hardness	≥1H
	Impact (50cm)	Pass
	Storage test (40ºC,24hr)	Good

More Code

Code	Ratio	Cure Cycle	AV (mgKOH/g)	Viscosity (mPa.s/200ºC)	Tg (ºC)	Reactivity (s/180ºC)	Properties
NH6686	96/4	180ºC*10min	24~29	4000~5500	~59	200-350	Suitable for general industrial products. Low hardener demand, good flow and pinhole free in thick films.
NH6688K	96/4	180ºC*15min	20~25	6000~8000	~55	240-360	Excellent flowability, Good mechanical properties, good resistance to chemicals and fine anti-yellowing, could be cured at 180ºC.

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.