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Low Curing Powder Coating Polyester Resin For MDF Powder Coatings

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Low Curing Powder Coating Polyester Resin For MDF Powder Coatings

Brand Name : KINTE

Model Number : HH2533

Certification : ISO14000, ISO90001, Reach, Qualicoat, ROHS

Place of Origin : China

MOQ : 1000kg

Price : Negotiable

Payment Terms : L/C, D/P, T/T

Supply Ability : 80,000 tons per year

Delivery Time : 10 working days

Packaging Details : 25Kg/PE Bag, 875Kg/Pallet, 17,500Kg/20GP

Cured Type : 50/50 Polyester Epoxy

Cured Requirement : 130℃×15-20min

Acid Number (mgKOH/g) : 68-75

Viscosity (mPa·s/200℃) : 2500±1000

Softening point(℃) : 93~118

Glass transition temp.(℃) : ~ 54

Properties : Low Curing Temperature

Application : For MDF Powder Coatings

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Low Curing Powder Coating Polyester Resin for MDF Powder Coatings

Introduction

HH2533 is a saturated polyester resin, which is mainly used for 50/50 polyester epoxy mixed powder coating and can be realized low temperature curing at 130℃.

Powder coatings have developed rapidly in recent years. Compared with traditional liquid coatings, powder coatings have the characteristics of energy-saving, environmental protection, and excellent comprehensive performance. With the strengthening of the concept of energy-saving and environmental protection, the development of low-temperature curing polyester resin is a development trend. In addition, some heat-sensitive substrates (such as medium density fiberboard) are also sensitive to temperature and require low-temperature curing.

Reducing the curing temperature will inevitably require the resin to have high reactivity, and high reactivity will have a certain impact on the performance of the coating. The existing powder coating system mainly has the following problems when it is used for low-temperature curing. On the one hand, the system reactivity is not enough, the powder coating cannot be completely cured, and the coating performance is not ideal; In order to achieve the reactivity required for low-temperature curing, polyester resins often have high melt viscosity, high reactivity, and cannot be fully leveled under low-temperature conditions. These all greatly affect the decorative properties of powder coatings.

HH2533 greatly improves the reactivity, and at the same time has good storage stability. When the resin is applied to powder coatings, it achieves low-temperature curing very well, the coating has good adhesion to the substrate, and has good leveling and stability. Chemical resistance, ideal for MDF powder coatings.

Basic Features

Low curing temperature

Excellent storage stability

Excellent chemical resistance.

Outstanding mechanical performance

Recommend Formulation:

HH2533 E-12 Filler & Pigment Leveling agent Benzoin 701
300 300 383 8 4 5

Specifications I:

Appearance White or pale yellow transparent flakes
Acid Value (mgKOH/g) 68~75
Softening Point (℃) 93~118
Glass Transition Temp. (℃) ~54
Melting Viscosity (200℃, ICI, mPa·s) 2500±1000
Reactivity at 180℃ (s, 50% E-12) 70±40
Curing Requirement 130℃×15-20min
Packaging PE Bags, Net Weight 25kg ± 0.1kg / bag

Specifications II:

Extrusion Condition Two-screw Extruder

Jacket temperature

110~120℃
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 (180℃, sec) 30~120
Horizontal Flow (180℃, mm) 18~22
Gloss (60°) ≥85%
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), listed 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!

In 2017, the new production base with 80000 tons annual capacity was put into construction in Dongguan, Guangdong, and the annual production capacity reached 120000 tons by the end of 2020, opening the road to global diversified development.



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