Qualicoat class 1.5-2 super durable Primid HAA cure Polyester resin NH6588 with excellent flow and anti yellowing
NH-6588 is a saturated carboxyl polyester resin designed for 95:5 Primid XL 552 powder coating to be cured at 180℃.
The film-forming substance of polyester/TGIC system powder coatings is mainly polyester resin, and the performance of polyester resin determines the performance of powder coatings. Polyester resin is a linear or slightly branched heterochain polymer compound made by high-temperature condensation of polyol and polyacid. Due to the limitation of polyester resin molecular structure, powder coating shows the defect of poor weathering performance in the process of use, mainly for: powder coating crosslinking density is low, solvent resistance, heat resistance is poor; powder coating film-forming material contains a large number of ester bonds prone to hydrolysis; powder coating includes a small number of hydroxyl, easy to occur "β-elimination reaction", resulting in unsaturated bonds. In the process of using powder coating, it will be subject to light, moisture, oxygen, chemical medium, biomass enzymatic decomposition, and other environmental factors, which will lead to loss of light, discoloration, chalking, blistering, peeling, and other aging phenomena, limiting the scope of application of powder coating.
◇Basic Features:
Super durable weatherablity, excellent yellowing resistance and boiling water performance, especially suitable for outdoor powder coatings.
◇Specifications:
| Appearance | Pale yellow flake |
| Color (50% DMF) | Max:2 |
| Acid Number (mgKOH/g) | 32～38 |
| Softening Point (℃) | 100～110 |
| Glass Transition Temp. ( ℃) | ～62 |
| Melting Viscosity (cone/plate, mPa·s/200℃) | 2200±800 |
| Reactivity at 180℃ (s, 5% T-105) | 200～320 |
| Curing Requirement | 180℃×15min |
| Packaging | PE Bags, Net Weight 25kg ± 0.1kg / bag |
◇Extrusion Condition:
Two-screw Extruder
Zone I: 90～110℃ Zone II: 100～110℃
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
◇More Codes:
| Code | Ratio | Cure Cycle | AV (mgKOH/g) | Viscosity (mPa.s/200℃) | Tg (℃) | Reactivity (s/180℃) | Properties |
| NH6582 | 95/5 | 180℃*10min | 30~35 | 4600~6000 | ~61 | 150~220 | Good storage stability, excellent mechanical properties and good outdoor durability. |
| NH6583 | 95/5 | 180℃*10min | 30~35 | 2500~3500 | ~56 | 200~290 | Very good flow, excellent mechanical properties, and pinhole free in thick films. |
| NH6584 | 95/5 | 180℃*10min | 30~36 | 2200~4200 | ~60 | 200~400 | Outstanding flow, excellent mechanical properties, cost effeciency. |
| NH6586-2 | 95/5 | 180℃*10min | 30~35 | 3000~4000 | ~59 | 280~480 | Good storage stability, excellent flow and mechanical properties. |
| NH6586PT | 95/5 | 180℃*10min | 30~37 | 3000~5000 | ~58 | 220~340 | Good leveling and weather resistance, excellent mechanical properties and anti yellowing, pinhole free in thick films and good storage stability. |
| NH6587 | 95/5 | 180℃*10min | 30~36 | 5000~7000 | ~67 | 120~280 | Excellent storage stability and mechanical properties, good outdoor durability and flow. |
| Code | Ratio | Cure cycle | Acid value
(mgKOH/g) | Viscosity (mPa.s/200°c) | Tg(°c) | Reactivity (s/180°c) | Properties |
NH6588 | 95/5 | 200°C/10mins | 32-38 | 1400-3000 | ~62 | 240-480 | Super durable,excellent flow,anti yellowing |
◇ Packaging:PE bags, N.W. 25KG±0.1KG / bag
Remarks:all the polyester resins could be customizes to Non-tin (A) ,anti gas burners(G),tribo gun(T) and anti-blooming(F)
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Primid HAA Cure Thermoset Polyester Resin 25kg Qualicoat Class Anti Yellowing Images
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