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DuPont Tyzor ® Organic Titanates Product Information - Tyzor® NPT Description DuPont TYZOR® NPT, titanium tetra-npropionate, CAS: 3087-37-4, is a highly reactive organic alkoxy titanate with 100 % active content. TYZOR® NPT is a colorless to yellowish organic flammable liquid. It is very sensitive to moisture. Main use of TYZOR® NPT is for catalysis, catalyst manufacture, cross-linking in nonaqueous systems, surface modification. TYZOR® NPT is soluble in or miscible with many organic solvents or products. Examples of solvents are: aliphatic and aromatic hydrocarbons, alcohols, esters, ketones; (e.g. isopropanol, ethylacetate, acetone, hexane, heptane, toluene). To prevent undesired pre-reactions the products must be anhydrous. Typical Properties of TYZOR® NPT * Property Value Molecular weight 284 TiO2 content 279167 Ti content Density (20 °C) ~ 1.048 Viscosity (20 °C) ~ 190 Refractive index (20 °C) ~ 1.500 Pourpoint ~ - 50 Boiling Point (36 hPa) ~ 170 Flash point ~ 38 Unit g/mol % % g/cm3 mPa*s °C °C °C * This table gives typical properties. DuPont does not make any express or implied warranty that these products will continue to have these typical properties. Reactions TYZOR® NPT reacts extremely fast with water under hydrolysis forming n-propanol and reactive titanium oxide hydrate or titanium dioxide. A quick exchange of alkoxy groups occurs with other alcohols. TYZOR® NPT can be used as the raw material for making other titanates containing different alkoxy groups. It can also be used to make other chelated titanates by reaction with chelating agents like acetylacetone, ethylacetoacetate or alkanolamine. TYZOR® NPT acts as Lewis acid giving fast catalysis under mild conditions in many applications such as esterification transesterification, polycondensation, olefin polymerization (ZieglerNatta), etc. The high reactivity of TYZOR® NPT enables the interaction with low reactive functional groups such as OH or COOH groups of polymers, mineral substrate or metals effecting coating, adhesion promotion or cross-linking of polymers. Thermal treatment at > 350 °C or TYZOR® NPT films or coatings yields TiO2 and can give very thin TiO2 layers on different substrates such as glass, minerals, pigments, metals. Surface hardness and the adhesion properties can be improved. Applications and Advantages TYZOR® NPT is an important or essential constituent in many applications. The applications listed with advantages are: • Polymerization (Ziegler-Natta) (PE, PP, polybutadiene etc.) stereoselectivity, low pressure, effective process • Esterification (Plasticizer, different esters) elimination of by products, high yield, easy work up • Transesterification [(meth)acrylic esters / polyester for different applications such as fibers, films, UP resins, paint binder / different esters] mild conditions, no by products, high yield, easy work up, low catalyst concentrations • Amide / polyamide formation (carboxylic amide, polyamide from acid/ester) mild conditions, high yield, low catalyst concentrations • Coating (glass treatment: hot end treatment of hollow glass, iridescence of glass ware, coating of flat glass; metal, filler, pigment coating): surface hardness, adhesion The DuPont Oval Logo, DuPont™, and The miracles of science™ are trademarks or registered trademarks of E.I. du Pont de Nemours and Company. TYZOR® is a registered trademark of E.I. du Pont de Nemours and Company. Copyright © 2001 E.I. du Pont de Nemours and Company. All rights reserved promotion, improved dispersibility , coloring effects, heat and light reflection, iridescence, hydrophobation, corrosion resistance • Paints: crosslinking of paint binders, adhesion promotion, and binder for high temperature paints • Oxides via sol-gel process: simple process for special oxides as coatings, glasses or for encapsulating of different materials. Functions • Catalyst: TYZOR® NPT is used as an esterification or transesterification catalyst in an amount of 0.01-1 %. The titanate is often added as the last ingredient of the reaction components to prevent undesired pre-reactions. Transesterifications can be run at low temperatures < 100 °C. Direct esterifications of carboxylic acids need temperatures of > 180 °C. For Ziegler-Natta catalysis TYZOT NPT is frequently a catalyst ingredient and mainly used in combination with Mg and Al compounds. • Crosslinking Agent: TYZOR® NPT can be used for cross-linking agent by adding it added to the polymer or resin binder matrix or solution in concentrations of ~ 0.5 - 5 %. The reactivity of TYZOR® NPT is so great that crosslinking may occur immediately. Depending on the desired outcome of the reaction, other less reactive TYZOR® titanate products be a better alternative. • Coating Additive: Any surface treated with a dilute solution of TYZOR® NPT will form titanium dioxide layers when the surface is heated or exposed to moisture. Thermal decomposition occurs at > 350 - 600 °C. TYZOR® NPT is preferably applied by vapor deposition in a stream of a dry gas or by spraying on a hot surface of the substrate. A thin layer of titanium dioxide will form. By spraying, dipping or brushing of the substrate from solutions and subsequent hydrolysis by moisture also TiO2 layers can also be formed. • Primer: TYZOR® NPT can be used as a primer prior to painting or the application of a coating to increase adhesion of the coating to the surface. TYZOR® NPT is usually applied in very low concentrations of ~ 0.15 % in an organic solvent such as isopropanol. Heating after application to ~ 80-100 °C for a short time helps set up the primed surface to subsequent treatment. • Surface modifying reagent: Sol-Gels made by total or partial hydrolysis of TYZOR® NPT preferably in the presence of chelating agents or in combination with other metal alkoxides gives a sol-gel that can be used as a binder, coating, artificial glass or ceramic. Contact Information Web Site http://www.dupont.com/tyzor Email: [email protected] Phone: 800-255-4596 or 302-992-2894 The information set forth herein is furnished free of charge and is based on technical data that DuPont considers to be reliable. It is intended for use by persons having technical skill and at their own discretion and risk. DuPont makes no warranties, express or implied, and assumes no liability in connection with any use of this information. DuPont does not suggest, induce, or recommend infringement of any patent held by others by any statement or description made herein. The reader should consult counsel of its own choice, and not DuPont, in order to make such legal determinations. The DuPont Oval Logo, DuPont™, and The miracles of science™ are trademarks or registered trademarks of E.I. du Pont de Nemours and Company. TYZOR® is a registered trademark of E.I. du Pont de Nemours and Company. Copyright © 2001 E.I. du Pont de Nemours and Company. All rights reserved