Process for the production of polymers of a - olefins highly stereo - regular, and the catalyst used for the implementation of this

摘要

This process consists in homopolymerize or copolymerized a a - olefin containing 3 has 10atomes of carbon with other olefins or with the ethylene, using a catalyst comprising three elements a, b and c: a. a catalyst obtained by reaction between a solid product, a group of compounds iii comprising a link o - co, one element selected from among the links c - o - h, c - o - c, c - n, n, n - o - c, p - o - c, p - n - c, c - (s) - h, c - s - c, s - o - c and p - s - c, and titanium with a link halogen, the solid product being obtained by reaction of a organo - magnesian with a compound of formula rsix halogeno - silica, r is a group hydrocarbon, x represents an atom of halogen and n is defined by the equation on4, ii, halogeno - aluminium compound of formula ralx, r is a group hydrocarbon, x is an atom of halogen and l is defined by the equation ol3, b. an activating agent of formula raly, r is a group hydrocarbon, an atom of halogen or of 1996 and m is defined by the equation 2m3, c. at least one donor for the electrons.