Process for producing polymers or copolymers of olefins containing at least 3 carbon atoms

Claim 1

A process for producing a polymer or copolymer of an olefin containing at least 3 carbon atoms which comprises polymerizing or copolymerizing at least one olefin containing at least 3 carbon atoms, or copolymerizing the olefin with up to 10 mole% of ethylene and/or a diolefin, in the presence of a catalyst composed of (A) a magnesium-containing solid titanium composition and (B) an organo-aluminum compound; characterized in that the solid titanium composition (A) is a composition consisting essentially of the product formed by contacting (i) a halogen-containing magnesium organo-aromatic compound of the formula Mg(OR)Cl wherein R represents a radical selected from the group consisting of phenyl, naphthyl, lower alkyl-substituted phenyl, lower alkyl-substituted naphthyl, lower alkoxy-substituted phenyl, lower alkoxy-substituted naphthyl, halogen-substituted phenyl, halogen-substituted naphthyl, phenyl lower alkyl, lower alkyl-substituted phenyl lower alkyl, lower alkoxy-substituted phenyl lower alkyl and halogen-substituted phenyl lower alkyl, with (ii) an organic acid ester at a temperature of about 0° to 200° C. in the absence of mechanical pulverization, and further contacting the resultant product with (iii) a tetravalent titanium compound of the formula Ti(OR') g X 4-g wherein R' is an alkyl group containing 1 to 8 carbon atoms, X is a halogen atom and g is 0 to 4, at room temperature to 130° C. in the absence of mechanical pulverization, so as to form the solid titanium composition in which the amounts of titanium, magnesium, halogen and organic acid ester are respectively 1-5% by weight, 10-25% by weight, 40-65% by weight and 5-20% by weight, said organic acid ester (ii) being a member selected from the group consisting of (a) esters formed between carboxylic acids or halogensubstituted derivatives selected from saturated or unsaturated aliphatic carboxylic acids containing 1 to 18 carbon atoms and halogen-substituted derivatives thereof and alcohols or phenols selected from saturated or unsaturated aliphatic primary alcohols containing 1 to 18 carbon atoms, saturated or unsaturated alicyclic alcohols containing 3 to 8 carbon atoms, phenols containing 6 to 10 carbon atoms and C 1 -C 4 saturated or unsaturated aliphatic primary alcohols bonded to the ring carbon atom of a C 3 -C 10 aliphatic or aromatic ring, (b) aliphatic lactones containing 3 to 10 carbon atoms, (c) an ester formed between an alicyclic carboxylic acid containing 6 to 12 carbon atoms and a saturated aliphatic primary alcohol containing 1 to 8 carbon atoms, (d) esters formed between aromatic carboxylic acids containing 7 to 18 carbon atoms and alcohols or phenols selected from saturated or unsaturated aliphatic primary alcohols containing 1 to 18 carbon atoms, saturated or unsaturated alicyclic alcohols containing 3 to 8 carbon atoms, phenols containing 6 to 10 carbon atoms and C 1 -C 4 saturated or unsaturated aliphatic primary alcohols bonded to the ring carbon atoms of a C 3 -C 10 aliphatic or aromatic ring, and (e) aromatic lactones containing 8 to 12 carbon atoms and the organo-aluminum compound (B) is selected from the group consisting of trialkyl aluminum, alkenyl aluminum, alkyl aluminum alkoxide, alkyl aluminum hydride and alkyl aluminum halide.