Tyzor® TnBT is a highly reactive alkoxy titanate commonly used as a Lewis acid catalyst in esterification, condensation, and addition reactions.
Tyzor® TnBT is a 100% active tetra-n-butyl titanate in liquid form. The TnBT grade's most common use is as a Lewis acid catalyst in producing polyester polyols, polybutylene terephthalate, and polytrimethylene terephthalate, where it helps improve yield and eliminates unwanted byproducts. Tyzor® TnBT is also used in olefin polymerization as a Ziegler–Natta catalyst. As a metal catalyst, Tyzor® TnBT serves as a nontoxic replacement for organostannanes, tin, and other toxic metals used in organic synthesis. Relative to other Tyzor® titanates, TnBT is extremely sensitive to moisture and will decompose rapidly in water.
Tyzor® TnBT titanate can treat glass and metal surfaces to promote adhesion, increase light reflection, and improve resistance to heat, chemicals, corrosion, and scratches. Many Tyzor® grades, including TnBT, will form thin polymeric films of titanium dioxide on surfaces to increase iridescence and add coloring effects. Tyzor® TnBT can also be added to paints and coatings to cross-link polymers with carboxyl and hydroxyl functionality to increase heat and chemical resistance.
TiO2 content: 23.5%
Active content: 100%
Color: Colorless to pale yellow
Molecular weight: 340 g/mol
Density (20°C): 0.99 g/mL
Freezing point: −70°C
Boiling point (at 10 mmHg): 183°C
Flash point: 47°C
Solubility in solvents: Miscible in most organic solvents
Solubility in water: Decomposes quickly
Primary Chemistry: Tetra-n-butyl titanate
Poor yield of addition, esterification, and condensation reactions caused by the formation of unwanted byproducts Low yield during polyolefin synthesis Adhesion failure of coatings, inks, adhesives, and sealants Cracking and low abrasion resistance of sealants Delays related to slow curing and drying times of adhesives, sealants, coatings, and inks
Reaction catalyst Chemical manufacturing Glass coatings Metal coatings Paints
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