K-KAT XC-B221 is a a Bismuth Carboxylate catalyst designed for 2K and 1K blocked isocyanate urethane coatings. It provides similar properties to standard tin catalysts without the environmental drawbacks.
| Metal Type | Bismuth carboxylate |
| % Active | 20 |
| Market Application | 1K blocked NCO, 2K PU, Foam |
| Application Advantage | Exterior durability, Tin-free |
| Formulation Advantage | 2-EHA free, Efficient |
| Product Group | Catalyst (tin-free) |
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K-KAT XK-672
Metal Type Mixed carboxylateMarket Application 1K blocked NCOApplication Advantage FDA approvableCatalyst (tin-free)Effective catalyst for production of urethanes. Meets requirements of FDA 21 CFR 175.300. Recommended for 1K blocked NCO PU systems for coil coatings. -
K-KAT XK-635
Metal Type Zinc complexMarket Application 1K blocked NCOApplication Advantage Back end cureCatalyst (tin-free)Balance of cure and performance advantages. Effective for ambient and force dry cure of 2K PU. Excellent performance with MEKO-blocked Isocyanates. -
K-KAT XK-651
Metal Type Bismuth carboxylateMarket Application 2K PU% Active 25Catalyst (tin-free)High active, versatile, designed for 2K PU, HFO blown foam and silane terminated coatings. Improved hydrolytic stability compared to traditional Bi carboxylates. -
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