High efficiency catalysts for olefin polymerization

Claim 1

A catalyst for the polymerization of alpha-monoolefins, in the presence of an organoaluminum activator, consisting essentially of the product from the steps of (1) reacting (a) an organomagnesium compound of formula RMgX where R is alkyl having 1 to 20 carbon atoms, or aryl having 6 to 10 carbon atoms and X is R, halide or --OR or of complexes of these with organometallic compounds of aluminum or zinc, and (b) a transition metal compound selected from the group consisting of the halides, oxyhalides, alcoholates of aliphatic alcohols having 1 to 6 carbon atoms in the alkyl groups, acetates, benzoates, acetyl-acetonates and the dicyclopentadienyl salts of metals in Groups IV-B, V-B, VI-B, and VIII of the Periodic System in a ratio of (a) to (b) of between 0.25:1 and 100:1 and (2) deactivating any excess organomagnesium compound (a) with a deactivation agent for organomagnesium compounds; said deactivation agent being selected from the group consisting of hydrogen chloride, hydrogen bromide, water, acetic acid, alcohols, carbonic acid, phosphorus pentachloride, silicon tetrachloride, acetylene, and mixtures thereof.

Claim 7

A method for the preparation of a catalyst for the polymerization of olefins which consists of reducing a transition metal compound selected from the group consisting of the halides, oxyhalides, alcoholates of aliphatic alcohols having 1 to 6 carbon atoms in the alkyl groups, acetates, benzoates, acetylacetonates, and the dicyclopentadienyl salts, with an organomagnesium compound and then deactivating the excess organomagnesium compound with a deactivation agent therefore selected from the group consisting of hydrogen chloride, hydrogen bromide, water, acetic acid, alcohols, carbonic acid, phosphorus pentachloride, silicon tetrachloride, acetylene, and mixtures thereof; said transition metal being selected from the metals of Groups IV-B, V-B, VI-B, and VIII of the Periodic System, and said organomagnesium compound being selected from the group consisting of compounds of formula RMgX where R is alkyl having 1 to 20 carbon atoms, or aryl having 6 to 10 carbon atoms and X is R, halide or --OR and complexes of RMgX with organometallic compounds of aluminum or zinc.

Claim 8

A method for the preparation of a catalyst for the polymerization of olefins which consists of reducing a transition metal compound selected from the group consisting of the halides, oxyhalides, alcoholates of aliphatic alcohols having 1 to 6 carbon atoms in the alkyl groups, acetates, benzoates, acetylacetonates, and the dicyclopentadienyl salts, with an organomagnesium compound and then deactivating the excess organomagnesium compound with a deactivation agent therefore selected from the group consisting of hydrogen chloride, hydrogen bromide, water, acetic acid, alcohols, carbonic acid, phosphorus pentachloride, silicon tetrachloride, acetylene, and mixtures thereof; said transition metal being selected from the metals of Groups IV-B, V-B, VI-B, and VIII of the Periodic System, and said organomagnesium compound being selected from the group consisting of compounds of formula RMgX where R is alkyl having 1 to 20 carbon atoms, or aryl having 6 to 10 carbon atoms and X is R, halide or --OR and complexes of RMgX with organometallic compounds of aluminum or zinc.