TIB KAT 256

TIB KAT 256 – Monobutyltin Oxide (MBTO) for esterification, transesterification, and polycondensation

TIB KAT 256 is a solid organotin catalyst used in esterification, transesterification, and polycondensation reactions. As a monobutyltin-based organotin, the product has lower toxicity than dibutyl-based tin catalysts.

TIB KAT 256 shows excellent performance in the production of polyesters and alkyd resins.

Properties & Advantages

• High temperature stability
• Low intrinsic color
• High reactivity thanks to 56% tin content and small ligands
• Very low acid numbers due to efficient reaction control
• Minimal coloration in end products
• Better hydrolytic stability than titanium catalysts, especially in the start phase of esterification

TIB KAT 256 is manufactured to the highest purity standards to minimize toxicologically relevant dibutyl and tributyltin impurities.

Dosage & Temperature Range

• Usage amount: 0.01–0.5% by weight
• Can be used at 90–280°C