96/4 Primid Saturated Polyester Resins for Low Gloss Powder Coatings

• CAS No.: 25135-73-3
• Formula: /
• EINECS: /
• Molecular Principal Chain: High-Molecular Polymer
• Color: White
• Ratio: 96/4
• Model NO.: NH6688T
• Type: Polyester/Primid Type
• Acid Value (Mgkoh/G): 19-24
• Transport Package: 25kg/Bag
• Trademark: KINTE
• Origin: China
• HS Code: 3907999000
• Production Capacity: 80000 Tons Per Year

Product Description

96:4 Primid Saturated Polyester Resins Dry-blended for Low Gloss Powder Coatings
NH6688T is tribo chargerable type version of NH6688, are saturated carboxyl polyester resins for low gloss polyester/primid (96:4) powder coatings by dry blending procedure.
With its advantages of economy, environmental protection, high efficiency and excellent performance, powder coatings are gradually replacing organic solvent-based coatings, becoming an important development direction in the coatings industry, and have maintained a rapid growth rate. Recently, the consumption of weather-resistant low-gloss powder coatings has shown a large upward trend. On the one hand, consumers feel that the high-gloss bright paint is more reflective after film formation, which is harmful to human eyes; on the other hand, consumers' aesthetic concept is becoming more and more inclined to casual, stylish and personalized. Coupled with the booming demand of my country's automobile and home appliance industries. These factors have led to a dramatic increase in the demand for low-gloss coatings with a softer appearance.
Polyester thermosetting powder coatings can be divided into pure polyester type and mixed type according to different curing systems, among which the mixed type is the most widely used. Pure polyester type mainly includes polyester-TGIC system and polyester-PRIMID system, which are mostly used outdoors; because TGIC has certain toxicity and is irritating to human skin, especially in summer, the operators of powder coating preparation often have allergies. Therefore, countries such as Europe and the United States are actively developing alternatives to TGIC, among which the more successful one is P-hydroxyalkylamide. The main advantages of P-hydroxyalkylamide curing systems compared to TGIC are:
1. The toxicity is very low, the oral LD50 of mice is less than 10g/Kg, and it is non-irritating and has no allergic reaction to the skin. In addition, it is important that it has no mutagenic and teratogenic effects, and does not destroy the ecological balance;
2. The storage stability of polyester powder coatings cured with e-hydroxyalkylamide is better than that with TGIC;
3. The leveling and impact resistance of the coating are slightly better than those of TGIC;
4. The cost of powder coating is slightly lower than with TGIC.
NH6688T is cured by P-hydroxyalkylamide, which is in line with the development direction of environmental protection. At the same time, it can be used for dry blending matting to prepare low-gloss powder coatings, and has excellent mechanical properties.


Basic Features
Low gloss film
Excellent mechanical properties
Good leveling, good storage stability
Good chemical resistance, fine anti-yellowing


Recommend Formulation:   

Formulation	NH6381T	NH6688T	T-105	Filler & pigment	Leveling agent	Benzion
I	200	-	15	150	2.4	1.2
II	-	200	7.5	150	2.4	1.2

Specifications:

Appearance	Pale yellow flakes
Color (50% DMF)	≤3
Acid Value (mgKOH/g)	19~24
Softening Point (ºC)	100~110
Glass Transition Temp. (ºC)	~58
Melting Viscosity (200ºC, cone/plate, mPa·s)	5600±800
Reactivity at 180ºC (s, 4% XL552)	250±30
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: 110~120ºC
	Speed of Revolution	500~1200rpm
	Fineness of Powder	<100μm
Application Condition	Electrostatic Spraying With	40~70KV
	Coating Film Thickness	50~80μm
	Degreased Cold-rolled Steel	0.5mm
Film Properties	Gloss (60°)	≤40%
	Bending (φ2mm)	Pass
	Adhesive (1mm, grade)	0
	Pencil Hardness	≥1H
	Direct Impact Resistance	Pass 50kg·cm

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.