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Urethane Catalysts > K-KAT

Tin Free Catalysts for Urethanes

Catalysts for 2K PU Systems

Product             Metal

Level % as Supplied on TRS 

System Type Attributes TDS Sample
Solventborne 2K PU
K-KAT XC-B221 Bismuth 0.03 - 2.0 SB Similar to DBTDL. Very effective in 2K and blocked isocyanate coatings.  Best hydrolytic stability of the Bismuth catalysts.   TDS  Sample
K-KAT 348 Bismuth 0.03 - 1.0 SB Similar to DBTDL. Very effective in 2K and blocked isocyanate coatings. TDS  Sample
K-KAT 4205 Zirconium 1.0 - 2.0 SB Selective Catalyst (less gassing). Good pot life. Recommended for 2K PU coatings.  TDS Sample
K-KAT 5218 Aluminum 1.0 - 2.0 SB Excellent 2K urethane pot life when used with 2,4 pentanedione TDS Sample
K-KAT XK-635 Metal Complex 

0.1 - 0.5 (2K PU)

0.5 - 1.0 (blocked NCO) 

SB, SL Effective replacement for tin catalysts, with good balance of cure/pot life in 2K PU. Effective with MEKO blocked isocyanate. Good hydrolytic stability. TDSTDS  Sample 
K-KAT XK-639 Metal Complex 

0.1 - 0.5 (2K PU)

0.5 - 1.5 (blocked NCO)

SB, SL Effective replacement for tin catalysts with good balance of cure/pot life in 2K PU. Effective with DMP blocked isocyanate. Good hydrolytic stability. TDS  Sample 
Waterborne 2K PU
K-KAT XK-614 Metal Complex 0.25 - 1.0 WB Most versatile. Effective in 2K WB and blocked isocyanate systems. Great hydrolytic stability. For use in polyol component.  TDS Sample
K-KAT 6212 Zirconium 0.3 - 2.0 SB, WB Selective catalyst for SB and WB 2K PU coatings. Sensitive to moisture, include in isocyanate component or as 3rd component.  TDS Sample
Cast Elastomer 2K PU
K-KAT XK-604 Mixed Carboxylate 0.1 - 1.0 SB Very good gel profile in ambient cure 2K urethane elastomer systems. Alternative to mercury. TDS Sample
K-KAT XK-617 Mixed Carboxylate 0.1 - 1.0 SB Excellent gel profile. Slightly less selective than XK-604. TDS Sample
K-KAT XK-618 Mixed Carboxylate 0.1 - 1.0 SB Best gel profile compared to mercury, with induction period followed by snap cure. Best compatibility in 1,4-butanediol.  TDS Sample

Blocked Isocyanate Systems

Product           Metal Level
% as Supplied on TRS 
System Type Attributes TDS Sample
Solventborne/ Waterborne
K-KAT XK-640 Bismuth 1.0 - 2.5 SB A versatile bismuth carboxylate catalyst designed for blocked isocyanate and two component urethane coatings. Provides improved hydrolytic stability compared to other bismuth carboxylate catalysts. TDSTDSTDSTDSTDS  Sample 
K-KAT XK-635 Metal Complex 0.5 - 1.0 SB Non-tin catalyst effective with MEKO blocked isocyanates. TDS Sample
K-KAT XK-639 Metal Complex 0.5 - 1.5 SB, WB Non-tin catalyst effective with DMP blocked isocyanates. TDS Sample
K-KAT XK-620 Metal Complex 1.0 - 2.0 E-coat Designed specifically for use in cathodic E-coat. TDS  Sample 

 

 

 

 
 
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