β-HAA Hardener for polyester powder coatings
Jietonda® SA3120 is a poly-functional β-hydroxyalkylamide cross linking agent. As a substitute of TGIC, it is suitable for curing with carboxyl-terminated polyester or acrylic resin to provide TGIC-free based exterior durable powder coatings.
1. Typical properties
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Appearance
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Off-white powder
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[visual]
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Melting ranges (℃)
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120-128
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Hydroxyl equivalent weight
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80-84
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Volatiles (%)
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≤1.0
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[GB 1725]
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Herein described to be typical properties and do not constitute specification limits.
2. Characteristics
● Non-toxic compared with TGIC, the resulting TGIC-free based exterior durable powder coatings are non-toxic, non-irritant to skin and safety to human body.
● Proven weather-resistance and low temperature curing (150℃) property.
● Exhibited enhanced charging properties so better powder transfer efficiency could be obtained.
● Excellent flow and mechanical properties.
● Improved anti-yellowing when used in combination with our developed specific degassing agent Jietonda® SA500.
3. Use method & levels
● Premix SA3120 with other components of the formula before extrusion
● Recommend to design formula by weight parts of 95/5 [resin to SA3120] for polyester resin with AV ca.34mg KOH/g; 96.5/3.5 for polyester resin with AV ca.22mg KOH/g.
4. Package & Storage
● Packaging with PE lined Kraft paper bags. Net weight 25 kg per bag.
● Store in cool dry place to avoid caking. Keep package closed after using. Keep away from heat and fire.
● Based on our experience the shelf life of this product under above conditions is at least 2 years.
