Procedure for the preparation of halogen-aluminum hydrides adequate as constituents of catalytic systems for the polymerization esteroespecifica de compuestos no saturados. (Machine-translation by Google Translate, not legally binding)

摘要

Process for the preparation of aluminum halogen hydrides suitable as constituents of catalytic systems for the stereospecific polymerization of unsaturated compounds, completed with a Lewis base of formula AlXmHn.Bp, where X represents a halogen atom chosen from chlorine, bromine or iodine, m and n are numbers such that their sum is equal to 3, B is a Lewis base chosen from ethers or tertiary amines, and p can adopt values not greater than 1, characterized by the fact that an alkaline hydride is reacted, chosen between those of sodium and potassium, in an aromatic hydrocarbon solvent, with an aluminum halide in the presence of a Lewis base, said Lewis base and aluminum halide being in a molar ratio not exceeding 1.5, in the presence of a catalyst consisting of a metal-organic compound of aluminum chosen from those comprising at least 2 metal-carbon bonds and in quantities between 0.5 and 5 moles of compound per 100 of alkali hydride. (Machine-translation by Google Translate, not legally binding)