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K7152
Jietonda® K7152
Polyisocyanate curing agent for powder coatings
Jietonda® K7152 is a closed polyisocyanate curing agent for powder coatings, designed to cure with hydroxy polyester or hydroxy acrylic resin to provide a smooth, weather-resistant and highly cross-linked powder coating. .
1.Typical properties
|
Appearance |
white to pale yellow granule |
[visual] |
|
NCO content (%) |
12-14 |
[Di-n-butylamine method] |
|
Free NCO(%) |
≤1.0 |
[Di-n-butylamine method] |
|
Tg（℃） |
55-65 |
DSC |
Herein described to be typical properties and do not constitute specification limits.
2.Characteristics
l Extremely high crosslink density , excellent surface hardness and chemical resistance for coating .
l Excellent leveling and smoothness.
l Excellent weather resistance and anti yellowing performance.
3.Use method & levels
Equivalent weight of this product is approx 310. It is recommended to cure with hydroxyl polymer in equivalent amount (15:85 for polyester with hydroxyl value of 30; 22:78 for polyester with hydroxyl value of 50). Tin-based catalysts can significantly improve coating mechanical properties and solvent resistance.
Unsealing temperature of this product is above 170℃, so it is recommended to fully cure at 180℃*20min or 200℃@15min
4.Package & Storage
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| Add: 15 Li Dun, North Outskirts of Luan City, Anhui, P, R, China P.C.:237158 | |
| Tel: +86-564-3711165 , +86-564-3711777 | |
| Fax: +86-564-3711167 | E-mail: jietonda@jietondachem.com |
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