Transcription of K-KAT® - Specialty Additives
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K-KAT® - Specialty Additives
K- K AT Guide to Tin-Free CatalystsFor Urethane CoatingsSPECIALTY CHEMICALS K- K AT catalysts are metal compounds designed for accelerating the crosslinking reaction of isocyanates with polyols. In addition to replacing tin catalysts, K-KAT catalysts o er a wide range of performance advantages. Bene ts include an improved pot life/cure time relationship, less gassing in the presence of water (humidity), improved cold temperature cure response and catalysis of secondary hydroxyl groups, and excellent lm properties. K- K AT Tin-Free Catalysts - Next Generation ResponsibilityTin AlternativesBismuth CarboxylatesRecommended for 2K SB and1K SB blocked isocyanatepolyurethane coatings andfor silane functional systems Properties comparable to tin catalysts Excellent exterior durability Non-yellowing Excellent gl
XK-661 E˜ective in 2K WB and moisture cure coatings. Similar performance to tin. XK-635 Very e˜ective in solventborne and solventless 2K urethanes and 1K blocked isocyanate systems. Good with MEKO Blocked NCO.
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