Jonathan L Schuchardt

6414099, Jul 2, 2002

Oct 18, 2000

09/691285

Gregory G. Hlatky - Morrow OH
Jonathan L. Schuchardt - Royersford PA

Equistar Chemicals, LP - Houston TX

C08F 480

526161, 502103, 502165, 502166, 502167, 502171, 526134

Single-site catalysts useful for polymerizing olefins are disclosed. The organometallic catalysts incorporate a Group 3 to 10 transition, lanthanide or actinide metal and a caged diimide ligand. The diimide ligands are made by a tandem Diels-Alder and photochemical [2+2] cycloaddition sequence to give a multicyclic dione, followed by condensation with a primary amine. Because a wide variety of caged diimide ligands are easy to prepare from commercially available dienes and dienophiles, the invention enables the preparation of a new family of single-site catalysts. Based on their unique structure and geometry, the catalysts offer polyolefin producers new ways to improve activity, control comonomer incorporation, or regulate polyolefin tacticity.

6489414, Dec 3, 2002

Jun 6, 2001

09/875071

Jonathan L. Schuchardt - Royersford PA

Equistar Chemicals, LP - Houston TX

C08F 444

526161, 526134, 526172, 5261691

A single-site catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises an optional activator and a complex that incorporates a Group 3 to 10 transition metal and at least one neutral or anionic chelating pyrimidine ligand. The ligands are easy to make, and they are readily incorporated into transition metal complexes, including those based on late transition metals. By modifying the chelating groups and other substituents on the pyrimidine ring, polyolefin makers can increase catalyst activity and control polymer properties.

6495485, Dec 17, 2002

Apr 8, 2002

10/118107

Gregory G. Hlatky - Morrow OH
Jonathan L. Schuchardt - Royersford PA

Equistar Chemicals, LP - Houston TX

B01J 3122

502167, 564270

Single-site catalysts useful for polymerizing olefins are disclosed. The organometallic catalysts incorporate a Group 3 to 10 transition, lanthanide or actinide metal and a caged diimide ligand. The diimide ligands are made by a tandem Diels-Alder and photochemical [2+2] cycloaddition sequence to give a multicyclic dione, followed by condensation with a primary amine. Because a wide variety of caged diimide ligands are easy to prepare from commercially available dienes and dienophiles, the invention enables the preparation of a new family of single-site catalysts. Based on their unique structure and geometry, the catalysts offer polyolefin producers new ways to improve activity, control comonomer incorporation, or regulate polyolefin tacticity.

6544918, Apr 8, 2003

Jul 17, 2001

09/907180

Sandor Nagy - Mason OH
Jonathan L. Schuchardt - Royersford PA

Equistar Chemicals, LP - Houston TX

B01J 3100

502103, 502117, 502155, 502158, 526160, 526352, 556 12, 556 22, 556 23, 556 52

A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises an activator and a complex that incorporates a Group 3 to 10 transition metal and at least one chelating dianionic bis(allyl) or bis(benzyl) ligand. The ligands are often easy to make, and they are readily incorporated into transition metal complexes. By modifying the structure of the dianionic ligand, polyolefin makers can control comonomer incorporation, catalyst activity, and polymer properties.

6693154, Feb 17, 2004

Sep 6, 2001

09/947745

Jia-Chu Liu - Mason OH
Jonathan L. Schuchardt - Royersford PA

Equistar Chemicals, LP - Houston TX

C08F 452

526134, 526141, 526147, 526161, 5261691, 526172, 502103, 502117, 502167

A catalyst system useful for polymerizing olefins is disclosed. It comprises an activator and an organometallic complex. The complex includes a Group 3-10 transition or lanthanide metal and a 1,3-bis(arylimino)isoindoline or 1,3-bis(heteroarylimino)isoindoline ligand. Activities of the Group 8-10 catalyst systems rival or exceed those of late transition metal bis(imines). The resulting polyolefins typically have high molecular weights, broad molecular weight distributions, and a high degree of crystallinity, which makes them valuable for film applications.

6693157, Feb 17, 2004

Apr 8, 2002

10/117903

Jonathan L. Schuchardt - Royersford PA

Equistar Chemicals, LP - Houston TX

C08F 472

526170, 526160, 526131, 526134, 526943, 526348, 502117, 502103

A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises an activator and an organometallic complex that incorporates a Group 3 to 10 transition metal and at least one chelating, dianionic triquinane ligand. The cis,syn,cis-triquinane framework is generated in three high-yield steps from inexpensive starting materials, and with heat and light as the only reagents. By modifying substituents on the triquinane ligand, polyolefin makers can control catalyst activity, comonomer incorporation, and polymer properties.

6713576, Mar 30, 2004

Feb 25, 2003

10/373943

Sandor Nagy - Naperville IL
Jonathan L. Schuchardt - Royersford PA

Equistar Chemicals, LP - Houston TX

C08F 444

526160, 526134, 526943, 526170, 502103, 502117, 502152, 556 53

A catalyst system useful for polymerizing olefins is disclosed. The catalyst system includes an organometallic complex that incorporates a Group 3 to 10 transition metal and an anionic, polycyclic, convex ligand. Molecular modeling results indicate that the complexes, when combined with an activator, should actively polymerize olefins. The convex ligand uniquely stabilizes the active site while simultaneously minimizing steric interference. Calculations predict that complexes based on ligands with a high curvature index will have favorable reactivities with olefin monomers compared with similar complexes that incorporate Cp-like ligands.

6774078, Aug 10, 2004

Apr 23, 2003

10/421077

Sandor Nagy - Naperville IL
Barbara M. Tsuie - Cincinnati OH
Jonathan L. Schuchardt - Royersford PA

Equistar Chemicals, LP - Houston TX

B01J 3100

502103, 526160, 526170, 526943, 526134, 526114, 526116

A catalyst system useful for polymerizing olefins is disclosed. The catalyst system includes an organometallic complex that incorporates a Group 3 to 10 transition metal and an annulated cyclopentadienyl ligand that is pi-bonded to the metal. A one-pot method for making organometallic complexes from fulvene precursors is also disclosed. Additionally, the invention includes bimetallic complexes from cyclopentazulenyl compounds and a one-pot method for making them. Molecular modeling studies reveal that organometallic complexes incorporating such annulated cyclopentadienyl ligands, when combined with an activator such as MAO, should actively polymerize olefins.