Sumitomo Chemical Company, Limited

Cornell University

Wataru Hirahata

Masayuki Fujita

Makoto Itagaki

Kotohiro Nomura

Kohtaro Osakada

Daisuke Takeuchi

Yoshinori Seki

Sehoon Park

Geoffrey William Coates

Hidenori Hanaoka

Yasuki Fujiwara

Masaya Tanimoto

Shinya Nakahara

Mitsuhiro Okada

Hirofumi Hamaki

The present invention provides novel bimetallic complexes and methods of using the same in the isoselective polymerization of epoxides. The invention also provides methods of kinetic resolution of epoxides. The invention further provides polyethers with high enantiomeric excess that are useful in applications ranging from consumer goods to materials.

Isoselective polymerization of epoxides

The present invention aims at providing a process for producing a solid catalyst for olefin polymerization, the solid catalyst component being capable of providing a polymer having high stereoregularity when an &#x3b1;-olefin is polymerized; a process for producing a solid catalyst component, which is used for producing the solid catalyst; and a process for producing an olefin polymer using the solid catalyst. This object can be achieved by a process for producing a solid catalyst component (A), the process including a step of bringing a titanium compound (a), a magnesium compound (b) and an internal electron donor represented by Formula (I) into contact with each other:  where Ris a hydrocarbyl group having 1 to 20 carbon atoms; R, R, R, and Rare each independently selected from a hydrogen atom, a halogen atom and a hydrocarbyl group having 1 to 20 carbon atoms, and at least one selected from R, R, R, and Ris a hydrocarbyl group having 1 to 20 carbon atoms; and Ris a halogen atom.

Process for producing solid catalyst component for olefin polymerization

A homopolymer having a monomer unit such as an isopropylidene diallylmalonate unit; a process for producing said homopolymer comprising the step of homopolymerising a monomer such as isopropylidene diallylmalonate; a copolymer containing said monomer unit and an ethylene unit and/or &#x3b1;-olefin unit; and a process for producing said copolymer comprising the step of copolymerizing a monomer such as isopropylidene diallylmalonate with at least ethylene and/or an &#x3b1;-olefin.

Copolymer and production process thereof

A solid catalyst component for olefin polymerization comprising a titanium atom, a magnesium atom, a halogen atom, and a cycloheptapolyenedicarboxylic diester; a production method of the solid catalyst component, by contacting with one another a titanium compound, a magnesium compound, and the cycloheptapolyenedicarboxylic diester; a production method of a solid catalyst, by contacting the solid catalyst component with an organoaluminum compound; and a production method of an olefin polymer by polymerizing an olefin in the presence of the solid catalyst.

Components and catalysts for the polymerization of olefins

A solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and a defined internal electron donor such as dodecanedioyl dichloride; a production process of such a solid catalyst component, using a titanium compound, a magnesium compound, and the above internal electron donor, or using a solid component containing a titanium atom and a magnesium atom, and the above internal electron donor; a production process of a solid catalyst, using (i) the above solid catalyst component, (ii) an organoaluminum compound, and (iii) an external electron donor; and a production process of an olefin polymer using the above solid catalyst.

Olefin polymerization catalyst component and production process thereof, and production proces of olefin polymerization catalyst and olefin polymer

Homopolymer and copolymer, and production process thereof

A production process is provided for an olefin polymerization catalyst component precursor, including the steps of (I) adding an organomagnesium compound to a solution containing a solvent, a Si&#x2014;O bond-containing silicon compound, and a defined titanium compound, under agitation, and continuing the agitation until a magnesium concentration in a liquid phase of a reaction mixture decreases to 9 ppm by weight or lower, and (II) solid-liquid separating the reaction mixture. A production process is also provided for an olefin polymerization catalyst component using the above precursor. Further, producing process is provided for an olefin polymerization catalyst using the above catalyst component. Still further, a production process is provided for an olefin polymer using the above catalyst.

Process for producing solid catalyst component precursor for olefin polymerization

A catalyst for addition polymerization obtained by contacting (A) an organoaluminum compound, (B) a specific boron compound and (C) a solid inorganic compound, and a process for producing an addition polymer characterized by polymerizing an addition-polymerizable monomer in the presence of the catalyst.

Catalyst for addition polymerization, and process for producing addition polymer with the same

Transition metal compound, catalyst component for olefin polymerization, catalyst for olefin polymerization, and process for producing olefinic polymer

A transition metal compound represented by the general formula (2) or (3) described below, a catalyst component for olefin polymerization comprising said transition metal compound, a catalyst component for olefin polymerization using said transition metal compound and (C) and/or (D) described below, and a process for producing an olefinic polymer wherein olefins are homopolymerized or olefins are copolymerized with other olefins and/or other polymerizable unsaturated compound using said catalyst for olefin polymerization.

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Sodegaura, Japan

Wataru Hirahata