Enhanced TDS
Identification & Functionality
- Chemical Family
- Chemical Name
- Tilley Product Number
- CASE Ingredients Functions
- Industrial Additives Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- CASE Ingredients Features
- Industrial Additives Features
Applications & Uses
- Markets
- Applications
- Compatible Substrates & Surfaces
- Adhesive & Sealant End Applications
- Coating End Applications
- Industrial Additives End Use
- Ink & Toner End Applications
- Application, Processing and Usage Information
- Usage:
- Binder for coatings (adhesion promotion/ corrosion protection primers, shop primers, wash primers, stoving enamels, varnishes and lacquers for different substrates). Binder for printing inks. Co- binder for powder coatings. Temporary binder for ceramics. Binder for textile printing and non-woven. Wetting agent for grindings, esp. of organic pigments. Adhesives, pressure-sensitive adhesives and hotmelts.
- Properties and uses
- The Mowital grades are thermoplastic polyvinyl butyral resins which are supplied as fine-grained, free-flowing powders. The properties of the various grades are mainly determined by their molecular weights and their degree of acetalization. Mowital grades are soluble in a broad variety of organic solvents. They show good compatibility with plasticizers and other resins. Mowital grades are able to cross-link with other resins such as phenolic, epoxide and melamine resins. The network density may be adjusted depending on the degree of residual OH groups which is determined by the degree of acetalization. Mowital films are resistant to light and heat-sealable at temperatures above 120 °C. Toughness and elasticity are influenced by their molecular weight. Properties like water resistance and solubility in non-polar solvents mainly depend on their degree of acetalization. So the highly acetalized Mowital HH grades show the highest water resistance and best solubility in non-polar solvents such as toluene.
- Processing
- Mowital can be processed thermoplastic- cally or in solution of organic solvents.
- Preparation of Mowital solutions
- Mowital is soluble in a wide range of organic solvents and mixtures thereof. It can be dissolved in single solvents but to obtain low solution viscosities it is recom- mended to dissolve Mowital in solvent mixtures (e.g. 1:1 mixture of ethanol and toluene). Mowital is not soluble in water. However, a water content of up to 10% in the solvent mixture is possible and can be used to influence solution viscosity. Increase or decrease of viscosity depends on the type of solvents (e.g. increase in ethanolic solution) and must be tested in advance.To dissolve Mowital, stir the solvent or solvent mixture and add Mowital in portions at ambient temperature. The stirrer speed during addition of Mowital should be low to medium to ensure good dispersion of Mowital powder in the solvent and to avoid dusting. After Mowital is wetted by the solvent the stirring speed can be increased. Sometimes heat may be necessary for dissolving Mowital. In this case do not apply heat until Mowital is wetted to avoid agglomeration. For preparation of a solution with mixed solvents first add Mowital to the solvent which does not dissolve Mowital alone (e.g. aromatic solvent) in order to form a slurry. Then add the alcoholic solvent which normally dissolves Mowital best. The final solution viscosity as well as the speed of dissolution depend on the type(s) of solvent(s) used, the temperature and the speed of stirring.
- Application: Due to their narrow specification the Mowital SB grades are particular suitable for all applications where an extremely low tolerance for viscosity is essential (e.g. casting process) or where a very low ion content is required.
- Usage:
Properties
- Physical Form
- Soluble In
- Specifications
Value Units Test Method / Conditions Non Volatile Content min. 97.5 - DIN EN ISO 3251:2019-09 Polyvinyl Alcohol Content 12 - 14 - DIN EN ISO 4629-1:2016-12 Polyvinyl Acetate Content 1 - 4 - DIN EN ISO 3681:2019-03 Dynamic Viscosity (at 20°C, 10% solution in Ethanol, containing 5% water) 100 - 140 - DIN 53015 Glass Transition Temperature 65 °C DSC, ISO 11357-1 Water Content (at 20°C, up-take after 24 h, water immersion dry film thickness of test specimen: 0.1 m) 3 - 5 % DIN EN ISO 3251:2019-09 Bulk Density 210 g/l DIN EN 543, Dec. 1991 Chloride Content max. 100 ppm ISO 6227
Regulatory & Compliance
- Chemical Inventories
Safety & Health
- Product Precautions
- Static electricity has to avoided applying the appropriate safety measures while handling Mowital as well as organic solvents.