1
Jo Ann M Canich: Olefin polymerization catalysts. Exxon Chemical Patents, October 8, 1991: US05055438 (339 worldwide citation)

The invention is a polymerization catalyst system including an alumoxane and a Group IV B metallocene having a heteroatom ligand. The catalyst system can be employed to polymerize olefins to produce a high molecular weight polymer.


2
Jo Ann M Canich, Gary F Licciardi: Mono-Cp heteroatom containing group IVB transition metal complexes with MAO: supported catalyst for olefin polymerization. Exxon Chemical Patents, Myron B Kurtzman, October 15, 1991: US05057475 (312 worldwide citation)

The invention is a supported catalyst system including an inert support material, a Group IV B transition metal component and an alumoxane component which may be employed to polymerize olefins to produce a high molecular weight polymer.


3
Jo Ann M Canich: Monocyclopentadienyl transition metal olefin polymerization catalysts. Exxon Chemical Patents, Jaimes Sher, Myron B Kurtzman, March 17, 1992: US05096867 (277 worldwide citation)

The invention is a catalyst system including a Group IV B transition metal component and an alumoxane component which may be employed to polymerize olefins to produce a high molecular weight polymer.


4
Jo Ann M Canich: Process for producing crystalline poly-.alpha.-olefins with a monocyclopentadienyl transition metal catalyst system. Exxon Chemical Patents, M B Kurtzman, June 25, 1991: US05026798 (267 worldwide citation)

The invention is a catalytic process using a Group IV B transition metal component and an alumoxane component to polymerize .alpha.-olefins to produce high crystallinity and high molecular weight poly-.alpha.-olefins.


5
Henry W Yang, Jo Ann M Canich, Gary F Licciardi: Thermoplastic elastomers. Exxon Chemical Patents, Jaimes Sher, Catherine L Bell, July 23, 1996: US05539056 (164 worldwide citation)

This invention relates to polypropylene blends, particularly blends of high molecular weight amorphous polypropylene with low molecular weight isotactic polypropylene. These blends exhibit unusual elastomeric properties.


6
Jo Ann M Canich, Howard W Turner: Amido transition metal compound and a catalyst system for the production of isotatic polypropylene. Exxon Chemical Patents, Evan K Butts, June 7, 1994: US05318935 (121 worldwide citation)

Certain bridged and unbridged amido transition metal compounds of the Group IV-B metals are disclosed. These compounds may be used in a catalyst system comprising the amido transition metal compound and an alumoxane. Also disclosed is a process using the catalyst system for the production of high mo ...


7
Howard W Turner, Jo Ann M Canich, Bernard J Folie: High temperature polymerization process using ionic catalysts to produce polyolefins. Exxon Chemical Patents, M S Spiering, W G Muller, April 18, 1995: US05408017 (113 worldwide citation)

This invention relates to a process for polymerizing olefins at high pressures in a polymerization medium at high temperature utilizing an ionic olefin polymerization catalyst derived from the reaction of a cyclopentadienyl-containing transition metal compound having a hydrolyzable alkyl or hydride ...


8
Jo Ann M Canich, Henry W Yang, Gary F Licciardi: Process to produce thermoplastic elastomers. Exxon Chemical Patents, Catherine L Bell, Jaimes Sher, May 14, 1996: US05516848 (100 worldwide citation)

This invention relates to polypropylene blends, particularly blends of high molecular weight amorphous polypropylene with lower molecular weight isotactic polypropylene. These blends exhibit unusual elastomeric properties.


9
Jo Ann M Canich: Monocyclopentadienyl titanium metal compounds for ethylene-.alpha.-olefin-copolymer production catalysts. Exxon Chemical Patents, C E Smith, E K Butts, November 23, 1993: US05264405 (82 worldwide citation)

The invention is a catalyst system including a monocyclopentadienyl titanium compound and an alumoxane component which is highly productive for polymerizing ethylene and .alpha.-olefins to produce a high molecular weight ethylene-.alpha.-olefin copolymer having a high content of .alpha.-olefin.


10
Donna J Crowther, Richard A Fisher, Jo Ann M Canich, Gregory G Hlatky, Howard W Turner: Transition metal olefin polymerization catalysts. Exxon Chemical Patents, F E Reid, M S Spiering, April 2, 1996: US05504049 (75 worldwide citation)

This invention relates to non-Group 4 transition metal compositions useful as olefin polymerization catalysts, wherein the transition metal is in a high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as ...