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

        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

• Packaging with PE lined Kraft paper bags. Net weight 25kg per bag.
• Store in temperature under 32℃ and 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.