extinction curing agent for mixed systems with wide polyester adaptability

jietonda^® k7237a is a kind of resin type curing agent with epoxy resin as co reactant. it is designed for polyester / nbsp; epoxy mixed powder coating system to provide 2-40% low gloss. the coating has good impact resistance, surface hardness and scratch resistance.

1. typical properties

herein described to be typical properties and do not constitute specification limits.

2. characteristics
　 ● good matting effect, at least 2% gloss can be obtained, the gloss is more stable and easy to adjust;
　 ● participate in the curing reaction, the coating has higher hardness and scratch resistance;

    ● good leveling performance, can obtain smooth and smooth coating;

    ● with active groups, significantly increase the adhesion of the coating;

    ● it is widely used in various polyester resins.

3. use method & levels
　 ● mix with other ingredients in the formula in a high speed mixer and extrude through the extruder.
　 ● the recommended dosage is 1-5% of the total formula weight, depending on the desired gloss. at the same time, based on the chemical equivalent of k7237a, an additional 1.5 parts by weight of e-12 epoxy resin is required to react with each part of k7237a.

4. package & storage
　 ● packed in polyethylene lined kraft paper bags, each bag weighs 25 kg.
　 ● store in a cool, dry place to avoid moisture absorption. it should be closed immediately after use and away from fire sources.
　 ● based on our experience, this product has a shelf life of at least two years at a storage temperature of ﹤ 32 ° c.

5. advisement
　 ● choose proper accelerator or catalyst to improve the impact resistance, but this will result in unexpected gloss up or worsen the surface leveling.