K-KAT® - King Industries

1 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 gloss retention Catalyzes secondary hydroxyl groupsZirconium ChelatesRecommended for 2K SB, WBand high solids polyurethanecoatings and elastomers Fast cure and selective catalysis (less gassing)

2 Effective in cold and humid conditions Excellent exterior durability Good pot life with 2,4-PentanedioneAluminum ChelateRecommended for 2K SBpolyurethane coatings Extends pot life better than tin with 2,4-Pentanedione Synergistic effects with pot life extenders Excellent exterior durabilityZinc ComplexRecommended for 2K WB andSB polyurethane coatingsand 1K blocked isocyanatepolyurethane coatingsZinc CarboxylateRecommended for2K polyurethane and1K blocked isocyanatepolyurethane coatings Excellent hydrolytic stability Good selectivity Good versatility Hydrolytically stable FDA compliantKing Industries has established itself as a leader in manufacturing more environmentally acceptable additives for coatings, while also providing unique performance advantages.

3 The K-KAT range includes aluminum, bismuth, zinc and zirconium catalysts. A summary of the main attributes and properties of the K-KAT product line can be seen in the table below. Additional bene ts can be found within the performance examples in the following Leader inTin ReplacementTechnology3 Typical Attributes / PropertiesXK-661E ective in 2K WB and moisture cure coatings. Similar performance to e ective in solventborne and solventless 2K urethanes and 1K blocked isocyanate systems. Good with MEKO Blocked pot life, 2K auto re nish coatings. 6212 Fast catalyst for WB coatings. Also e ective in elastomers. For use in polyurethane , BC, CC, RE348 Similar cure pro le and performance to DBTDL.

4 E ective in urethane coatings and sealants. XK-651 Superior hydrolytic stability vs. other Bi carboxylate catalysts. E ective in some silane polymer - 2K urethane pot life when used with Add pentanedione to polyol component before K-KAT 5218 - Core and Next Generation Tin AlternativesBISMUTHALUMINUMZIRCONIUMZINC XK-672 Excellent lm properties. K-KAT XK-672 meets the requirements of FDA 21 CFR KATUse % (TRS)AttributesProductAuto OEM & Aerospace 2K PUSolventborne & SolventlessWB 2K PUSB 2K PUNV* 2K PUBlocked - - - - - - - & XK-672Re nishXK-635 & XK-651 Less Gassing vs. Tin2K PUWaterborne (All Applications) XK-661 Less Gassing (Add to NCO)6212 Versatile Catalyst1K PUSolventborne (All Applications) XK-672E cient CatalystXK-651 MaintenanceXK-651 & XK-672 General IndustrialXK-651 & XK-672 Clear Coatings348 & XK-651 FlooringXK-635 & 6212 Pot Life5218 & 4205PU Resin Synthesis348 & 6212*NV = Non-Volatile / Solventless Moisture CureFor Moisture CureSilane Functional670 & XK-675 Competitor BismuthAfter 24 hoursAfter 30 daysSettlingClearClearHazyCompetitor BismuthK-KAT XK-651K-KAT XK-651K-KAT XK-651 is a novel bismuth carboxylate designed for blocked isocyanate, 2K PU and silane terminated polymer coatings.

5 K-KAT XK-651 exhibits improved hydrolytic stability compared to other bismuth carboxylate catalysts. The study below shows the excellent stability of K-KAT XK-651 when water is present in the K AT XK-651 vs. Competitive BismuthNACURE XC-269 Steam ResistanceMetal LevelsConditionsPolyol spiked with water2K PU Hydrolytic Stability StudyCompetitor Bismuth = Bi on TRSK-KAT XK-651 = Bi on TRSK-KAT XK-661 is a novel non-tin catalyst recommended for 2K waterborne coatings. It has excellent hydrolytic stability, gloss retention and exterior durability. K-KAT XK-661 delivers superior pot life and gloss retention vs. tin, as seen in the study below where panels were coated with aged paint.

6 Pot life and gloss vs. DBTDL - 2K WBNACURE XC-269 Steam ResistanceCatalyst LevelsCureSubstrateBonderite 100030 minutes @ 80 C + 1 week ambient2K Waterbased Acrylic Isocyanate Clear CoatDBTDL = on TRSK-KAT XK-661 = on TRSDry lm mil2 hours with DBTDLB etter Pot Life Stability = Better Gloss Retention3 hours with K-KAT XK-661 Gloss of panels coated with aged paintLoss of GlossRetains GlossGloss 60 = 60 = pictures to the right demonstrate the outstanding hydrolytic stability of K-KAT XK-651 when compared to a competitor s bismuth carboxylate at 1 day and 30 days of ambient XK-651 has superior hydrolyticstability and therefore is the preferred bismuth catalyst for use where

7 Moisture may be present. Formulators NoteThrough Dry - K-KAT XK-651 vs. Comp. BiCompetitor BismuthK-KAT XK-65181210 Through Dry, hours621 Week Storage at 50 C414161802 Weeks Storage at 50 CInitial Through DryK- KAT XK-672 is an e ective catalyst for the reaction of isocyanates and polyols for the production of urethane coatings. It is a proprietary organometallic complex speci cally designed to replace tin. It also meets FDA 21 CFR requirements. FDA Approvable CatalystJoncryl1 500 DBTDLPM AcetateAromatic 150 IsopropanolDISPARLON L-1984 Trixene2 7984 MaterialsDescriptionAcrylicControl Acrylic PolyolTin-FREE CatalystTin CatalystSolventSolventSolventLeveling AgentBlocked IsocyanateK-KAT XK-672 Blocked NCO : OH = 1:1 Pendulum Hardness - K-KAT XK-672 vs.

8 K-KAT XK-6726080100120140160 Pendulum Cycles130 C140 CCatalyst LevelsCureSubstrateBonderite 100020 Min. Bake @ 130 C, 140 C, 150 CJoncryl 500 / MEKO Blocked NCODBTDL = on TRSK-KAT XK-672 = on TRSDry lm thickness1 mil150 C4020 MEK Resistance - K-KAT XK-672 vs. K-KAT XK-6726080100 MEK 2X Rubs4020130 C140 C150 CThe following study is designed to demonstrate typical properties of tin-free catalysis in a 1K blocked isocyanate system. Improved pendulum hardness and MEK resistance can be seen in the results below. K-KAT XK-672 is FDA approvable and compatible with FDA approvable resins and coatings systems. 6 Although the catalyst is a minor formulation component in most coating systems, it contributes signi cantly to the performance of the coatings and lm properties.

9 The K-KAT product line o ers a range of catalysts for a variety of applications. Please contact our technical sta for assistance in selecting the proper catalyst for meeting your demanding requirements. K- K AT Non-Tin Catalysts for Urethane CoatingsNotes:Global HeadquartersTech. Service, R&D, and SalesKing Industries , Science , CT 06852, USAP hone: 1-203-866-5551 European Tech. Sales O ceKing Industries , InternationalScience Park 4021098 XH AmsterdamThe NetherlandsPhone: 31 20 723 1970 Asia-Paci c Tech. Sales O ceSynlico Tech Co., Ju Lin Ya YuanRichMond Hill (Juhaoyuan)Zhongshan, ChinaPhone: 86 760 88229866 Contact conditions of your use and application of our products, technical assistance and information (whether verbal, written or by way of product evaluations), including any suggested formulations and recommendations, are beyond our control.

10 Therefore, it is imperative that you test our products, technical assistance and information to determine to your own satisfaction whether they are suitable for your intended uses and applications. Such testing has not necessarily been done by King Industries , Inc. ("King"). The facts, recommendations and suggestions herein stated are believed to be reliable; however, no guaranty or warranty of their accuracy is made. EXCEPT AS STATED, THERE ARE NO WARRANTIES, EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS OR OTHERWISE. KING SHALL NOT BE HELD LIABLE FOR SPECIAL, INCIDENTAL, CONSEQUENTIAL OR EXEMPLARY DAMAGES. Any statement inconsistent herewith is not authorized and shall not bind King.