Abstract:
57 Improved methods for preparing metal alkoxides from metals and alcohols involve dry-grinding the metal in an inert atmosphere prior to the addition of the alcohol. When an activator is used, it is usually ballmilled with the metal. Higher yields are obtained particularly when the metal and alcohol are not very reactive without an activator. Typical metals are those from Groups 2A, 2B, 3A, and 3B, particularly aluminum, magnesium, and yttrium. Typical alcohols are those which contain up to 16 carbon atoms, particularly those containing 4 or more carbon atoms.
Abstract:
57 Improved methods for preparing metal alkoxides from metals and alcohols involve dry-grinding the metal in an inert atmosphere prior to the addition of the alcohol. When an activator is used, it is usually ballmilled with the metal. Higher yields are obtained particularly when the metal and alcohol are not very reactive without an activator. Typical metals are those from Groups 2A, 2B, 3A, and 3B, particularly aluminum, magnesium, and yttrium. Typical alcohols are those which contain up to 16 carbon atoms, particularly those containing 4 or more carbon atoms.
Abstract:
A process for preparing an effective support for the titanium halide component of a coordinate complex catalyst for the polymerization of alphaolefins comprises the steps of: a) intimately contacting a magnesium or manganese chloride or bromide with a drying agent at an elevated temperature, b) milling the magnesium or manganese chloride or bromide so as to activate its surface; and c) repeat contacting step a) and milling step b) for two or more cycles, whereby the effective support is produced.
Abstract:
A process for preparing an effective support for the titanium halide component of a coordinate complex catalyst for the polymerization of alphaolefins comprises the steps of:
a) intimately contacting a magnesium or manganese chloride or bromide with a drying agent at an elevated temperature, b) milling the magnesium or manganese chloride or bromide so as to activate its surface; and c) repeat contacting step a) and milling step b) for two or more cycles, whereby the effective support is produced.