Name | DOTL Dioctyltin Dilaurate |
CAS | 3648-18-8 |
Formula | C40H80O4Sn |
Synonyms | Dioctyldilaurate tin Bis(lauroyloxy)dioct Bis(dodecanoyloxy)(dioctyl)stannane Stannanes, dioctylbis[(1-oxododecyl) oxy] DOTL DOTDL |
Dioctyltin Dilaurate as Polyurethane Catalyst
In a variety of urethane crosslinking reactions dioctyltin dilaurate can be used as a catalyst to influence the duration of the process. DOTL has a lower toxicity compared to alternative additives, which offers advantages in handling, and is considered one of the standard catalysts in this field.
Examples of end-use applications include adhesives and sealants, foams and polyurethane casting resin systems required for floors and other applications where high physical loads are expected. Paints, powder coatings and coating systems can also be dioctyltin dilaurate-catalyzed.
DOTL as Silicone Catalyst
Similar to polyurethane-based materials, DOTL is also known as one of the standard catalysts for silicones and silane-modified polymers and is characterized by its relatively low toxicity. RTV silicones for automotive applications and molding compounds are examples of applications.
Further Use
Due to its broad profile and comparatively low toxicity, dioctyltin dilaurate catalysts are also used in a wide range of applications beyond polyurethanes and silicones, for example for binders such as alkyd resins, as polymerization initiators for formaldehydes or in silanol condensation reactions. DOTL is also an important intermediate product within the chemical industry.
In addition to its catalytic activity, dioctyltin dilaurate is also effective as a stabilizer and provides significantly improved light stability in PVC plastics.
Product Variants
Various dioctyltin dilaurate variants with different degrees of purity are available from BNT, tailor-made specifications are available on request.
BNT Product Name | Product Variant | Short |
BNT-CAT 500 | Dioctyltin dilaurate (C8-C18) | DOTL |
BNT-CAT 501 | Dioctyltin dilaurate (C12-C18) | DOTL |
BNT-CAT 502 | Dioctyltin dilaurate (C12) | DOTL pure |
Transport and Storage
DOTL from BNT production is delivered in polyethylene-lined jugs or barrels painted on the inside. Any crystallizations that may occur can be dissolved by heating and mixing without any loss of quality. With sealed original packaging, a minimum shelf life of 6 months is given without loss of quality.