Process for polymerization or copolymerization of olefin and catalyst compositions used therefor

A process for polymerizing or copolymerizing olefins in the presence of a catalyst consisting essentially of the reaction product of:

• A. a transition metal catalyst component prepared by reacting
• (1) a titanium or vanadium compound selected from the group consisting of compounds of the formula TiX.sub.4 wherein X is a halogen atom, compounds of the formula Ti(OR).sub.4-n X.sub.n wherein X is the same as defined above, R is an alkyl group, and n is zero or a positive number of less than 4, compounds of the formula VOX.sub.3 wherein X is the same as defined above, and compounds of the formula VX.sub.4 wherein X is the same as defined above, with
• (2) the product formed by a reaction at from -20.degree. to +100.degree. C between
• (a) 1 mol of a magnesium dihalide solid carrier comprising an adduct formed by reacting at a temperature of from -10.degree. to +200.degree. C;
• (aa) a magnesium dihalide;
• with
• (ab) an aliphatic or aromatic alcohol having from 1 to 12 carbon atoms, present in an amount of from 0.1 to 10 mols per mol of magnesium dihalide;
• and
• (b) an organometallic compound of a metal of Groups I to III of the periodic table selected from the group consisting of compounds of the formula RM wherein R is an alkyl or aryl group, and M is lithium, sodium or potassium, compounds of the formula R.sub.2 M' wherein R is the same as defined above and M' is zinc or cadmium, compounds of the formula R.sub.2-l MgX.sub.l wherein R is the same as defined above, X is a halogen atom and l is 0 or 1, compounds of the formula MAlR.sub.4 wherein R and M are the same as defined above, compounds of the formula R'.sub.3-m AlX.sub.m wherein R' is a hydrogen atom, or an alkyl or aryl group, X is the same as defined above, and m is zero or a positive number of not greater than 3, compounds of the formula R'.sub.3-n (OR).sub.n wherein R' is the same as defined above, and n is a positive number greater than 0 but not greater than 3, and compounds of the formula RAl(OR)X wherein R and M are the same as defined above, wherein the organometallic compound (A)(2)(b) is reacted with the magnesium dihalide solid carrier (A)(2)(a) in an amount such that the amount of the organic groups, R and R', of the organometallic compound is 0.1 to 1.5 mols per mol of the alcoholic hydroxy group of the adduct;
• and
• (B) an organometallic compound catalyst component of a metal of Groups I to III of the periodic table selected from the group consisting of compounds of the formula R'.sub.3-m AlX.sub.m wherein R' is a hydrogen atom, an alkyl or aryl group, X is a halogen atom, and m is 0 or a positive number not greater than 3, compounds of the formula R'.sub.3-n Al(OR).sub.n wherein R' is the same as mentioned above, and n is a positive number greater than 0 but not greater than 3, compounds of the formula RAl(OR)X wherein R and X are the same as defined above, compounds of the formula R.sub.2-l MgX.sub.l wherein R and X are the same as defined above and l is 0 or 1, and dialkyl zincs wherein the amount of the organometallic compound (B) is 1 to 10,000 mols per mol of the titanium or vanadium atom of the titanium or vanadium compound (A)(1).