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FASCAT® 4101 Catalyst
FASCAT® 4101, butylchlorotin dihydroxide, is a solid-form catalyst that is highly adaptable to various polycondensations, esterifications, and transesterifications.
The FASCAT® 4101 catalyst is a solid catalyst that remains stable when exposed to water and is effective even at low concentrations. It is highly adaptable and can be utilized in esterification, polycondensation, and transesterification reactions. The FASCAT® 4101 catalyst dissolves in carboxylic acid at 80°C while the reaction is taking place.
Specifications
Form: Solid Color: Amorphous white CAS registry number: 13355-96-9 Formula: BuSnCl(OH)2 Formula weight: 245.3 Sn %: 48.5 Chloride %: 14.5
Primary Chemistry: Butylchlorotin dihydroxide
Features & Benefits
Soluble in solvents, either with reaction or complex formation Soluble in dilute NaOH, warm HNO3 Insoluble in nonpolar solvents Synthesis of saturated polyester resins for powder coatings Transesterification reactions run at temperatures between 140°C and 180°C Can be active for esterifications as low as 180°C Does not require neutralization or filtration at the end of production Energy savings due to lower reaction temperatures Low loadings and significantly shortened esterification and transesterification cycle time compared to uncatalyzed systems Does not require neutralization or filtration at the end of production Can be charged up front with other reactants and requires no special handling other than avoiding excessive exposure to moisture Minimizes side reactions, such as dehydration and oxidative degradation of polyhydric alcohols, especially secondary alcohols
Problems Solved
High energy costs due to higher reaction temperatures Catalysts require neutralization or filtration at the end of production Catalysts create various side reactions
Applications
Powder coatings Chemical resin manufacturing Production of PBT engineering resins for the automotive and construction markets
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