Standard Oil Company (indiana)

Amoco Corporation

The Standard Oil Company

Bp Amoco Corporation

Nicholas M Karayannis

Sam S Lee

John S Skryantz

Bryce V Johnson

Habet M Khelghatian

Steven Alan Cohen

Gregory G Arzoumanidis

Harold Grams

Julie L Ledermann

Benjamin S Tovrog

Charles R Hoppin

Linda Ornellas

Jerome A Streeky

James A Turner

A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins containing magnesium, titanium, and halogen further contains an internal electron donor comprising ##STR1## wherein R is selected from C.sub.1 -C.sub.8 alkyl, C.sub.6 -C.sub.9 aryl or C.sub.1 -C.sub.8 alkoxy groups; and wherein X and Y are N-R', O, P(O)(OR'), P(O)R', or S, and R' is selected from hydrogen, C.sub.1 -C.sub.8 alkyl and alkoxy, and C.sub.6 -C.sub.9 aryl groups, provided that up to two Y groups may be CR'.sub.2 groups.

Olefin polymerization and copolymerization catalyst

A magnesium-containing supported titanium-containing and a hafnium-containing and/or zirconium-containing catalyst or catalyst component for the polymerization or copolymerization of alpha-olefins.

A process for making a magnesium-containing supported titanium-containing and vanadium-containing catalyst or catalyst component for the polymerization or copolymerization of alpha-olefins.

A process for making a magnesium-containing supported titanium-containing, alpha-olefin polymerization or co-polymerization catalyst or catalyst component having a large particle size, semi-spherical particle shape and high resistance to attrition.

A multistage method for making a homopolymer or copolymer of an alpha-olefin having increased stiffness and broadened molecular weight distribution.

Olefin polymerization and copolymerization process

A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprises the product formed by (A) forming a solution of a magnesium-containing species from a magnesium carbonate or a magnesium carboxylate; (B) precipitating solid particles from such magnesium-containing solution by treatment with a transition metal halide and an organosilane; (C) reprecipitating such solid particles from a mixture containing a cyclic ether; and (D) treating the reprecipitated particles with a transition metal compound and an electron donor.

Olefin polymerization catalyst

A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprises the product formed by (A) forming a solution of a magnesium-containing species from a magnesium carbonte or a magnesium carboxylate; (B) precipitating solid particles from such magnesium-containing solution by treatment with a transition metal halide and an organosilane; (C) reprecipitating such solid particles from a mixture containing a cyclic ether; and (D) treating the reprecipitated particles with a transition metal compound and an electron donor.

In a solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprising the product formed by (A) forming a solution of a magnesium-containing species from a magnesium alkyl (or hydrocarbyl) carbonate or a magnesium carboxylate; (B) precipitating solid particles from such magnesium-containing toluene-based solvent by treatment with a transition metal halide and an organosilane; (C) reprecipitating such solid particles from a mixture containing a cyclic either; and (D) treating the reprecipitated particles with a transition metal compound and an electron donor, the morphology of such component is modified by incorporating a morphology-affecting amount of C.sub.8 -C.sub.10 aromatics within the toluene-based solvent in Step B, Step A, in Step C prior to addition of ether, or combinations thereof.

Morphology-controlled olefin polymerization catalyst

A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics, comprises the product formed by (a) complexing a magnesium alkyl composition with an organophosphoryl compound; (b) reacting the resulting stable complex with a compatible precipitation agent to form a solid component; and (c) reacting the resulting solid with a titanium (IV) compound and an electron donor compound in a suitable diluent.

Supported olefin polymerization catalyst produced from a magnesium

A solid-hydrocarbon insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics, comprises the product formed by (a) complexing a magnesium alkyl composition with an ortho disubstituted hindered aromatic acid ester; (b) reacting the resulting complex with a compatible precipitation agent to form a solid component; and (c) reacting the resulting solid with a titanium(IV) compound and an electron donor compound in a suitable diluent.

Supported olefin polymerization catalyst

A comminuted, supported polymerization catalyst for alpha-olefins comprises (A) an organoaluminum compound and (B) a solid titanium-containing component formed by at least one halogen-containing compound of titanium(IV); (b) at least one electron donor; and (c) at least one hydrocarbon-insoluble magnesium-containing compound; and (2) retreating such comminuted product with (a) at least one halogen-containing compound of titanium(IV); and (b) a mixture containing ethylbenzoate and a substituted alkyl aromatic acid ester in which the substituent group has a negative Hammett constant; and optionally, at least one chlorocarbon and/or at least one haloalkylchlorosilane.

Mixed ester retreated propylene polymerization catalyst

A comminuted, supported polymerization catalyst for alpha-olefins comprises (A) an organoaluminum compound and (B) a solid titanium-containing component formed by (1) comminuting a solid reaction product comprising (a) at least one halogen-containing compound of titanium (IV); (b) at least one electron donor; and (c) at least one hydrocarbon-insoluble magnesium-containing compound; and (2) retreating such comminuted product with (a) at least one halogen-containing compound of titanium (IV); (b) at least one chlorocarbon; and (c) at least one organic acid ester.

Retreating comminuted olefin polymerization catalyst with a titanium

A comminuted, supported polymerization catalyst for alpha-olefins comprises (A) an organoaluminum compound and (B) a solid titanium-containing component formed by (1) comminuting a solid reaction product comprising (a) at least one halogen-containing compound of titanium(IV); (b) at least one electron donor; and (c) at least one hydrocarbon-insoluble magnesium-containing compound; and (2) retreating such comminuted product with (a) at least one halogen-containing compound of titanium(IV); (b) at least one haloalkylchlorosilane; and (c) at least one organic acid ester.

Retreating comminuted olefin polymerization catalyst with a titanium(IV)

Alpha-olefin polymerization catalyst comprising organometallic promoter and component obtained by contacting at least one halogenated aliphatic with solid reaction product of components comprising (1) titanium(IV) halide; (2) organic electron donor; and (3) pretreatment product prepared from components comprising (a) magnesium alcoholate, (b) Group II or IIIA metal alkyl, and optionally, (c) pretreatment modifier.

Growing community of inventors

Naperville, IL, United States of America

Nicholas M Karayannis