Monobutyltin Oxide

MBTO, Butylstannonic Acid, Butyltin Hydroxide Oxide.

CAS
2273-43-0
EC
218-880-1
Sectors
Plastics & Polymers, Coatings, Adhesives, Sealants & Elastomers
Monobutyltin Oxide (MBTO) is a high-efficiency organotin catalyst primarily used in esterification and polycondensation reactions. This Technical Grade white powder is valued for its ability to shorten reaction times and improve product yields. It is indispensable in the production of unsaturated polyester resins and alkyd coatings, where it ensures optimal cross-linking and thermal stability. MBTO remains active throughout the process, providing consistent results in large-scale production. Additionally, it functions as a critical component in the manufacture of polymeric plasticizers and powder coating resins. Its high purity ensures minimal interference with the color and transparency of the final polymer.

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Monobutyltin Oxide

Applications
  • Esterification Catalyst: Accelerates the synthesis of phthalate and adipate plasticizers at high temperatures.
  • Resin Production: Key catalyst for manufacturing coil coatings, insulating varnishes, and saturated polyester resins.
  • Polyurethane Synthesis: Employed in the production of high-performance PU elastomers and specialized foams.
Safety & Risks
Classified as Toxic if Swallowed and Skin Irritant. Handle with Respirators, Chemical-Resistant Gloves, and Goggles.
Packaging

25 kg Fiber Drums or specialized Plastic Kegs.