1
Brant Patrick, Luft Gerhard Franz, Shutt John Richard, Smith Lawrence Carl, Mclain Douglas J, Burkhardt Terry J: Polymer production at supercritical conditions. Exxonmobil Chemical Patents, Brant Patrick, Luft Gerhard Franz, Shutt John Richard, Smith Lawrence Carl, Mclain Douglas J, Burkhardt Terry J, BELL Catherine L, April 1, 2004: WO/2004/026921 (29 worldwide citation)

This invention relates to a process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally diluent or solvent, at a temperature above the cloud point temperature of t ...


2
Burkhardt Terry J, Wiser Dawn C, Li Robert T, Stehling Udo M, Haygood William T Jr, Rix Francis C, Mehta Aspy K: Propylene impact copolymers. Exxonmobil Chemical Patents, Burkhardt Terry J, Wiser Dawn C, Li Robert T, Stehling Udo M, Haygood William T Jr, Rix Francis C, Mehta Aspy K, FAULKNER Kevin M, August 16, 2001: WO/2001/058970 (4 worldwide citation)

This invention relates to propylene impact copolymer compositions. In particular, these unique and improved compositions can be produced using conventional, commercial-scale processes.


3
Burkhardt Terry J, Stehling Udo M, Hart James R, Haygood William T, Li Robert T, Vizzini James C, Kuchta Matthew C: (indenyl) Metallocene compounds. Exxonmobil Chemical Patents, SCHMIDT Paige, January 10, 2002: WO/2002/002576 (4 worldwide citation)

This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula wherein M?1¿ is selected from the group consisting of titanium, zir ...


4
Burkhardt Terry J, Hart James R, Haygood William T, Li Robert T: Metallocenes and catalyst compositions derived therefrom. Exxonmobil Chem Patents, March 29, 2006: EP1640377-A1 (3 worldwide citation)

Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula: wherein M 1 preferably is zirconium or hafnium; and R 5 is different from hydrogen.


5
Rodriguez George, Speca Anthony, Kuchta Matthew C, Mcconville David H, Burkhardt Terry J: Hydrophobization and silica for supported catalyst. Exxonmobil Chemical Patents, Rodriguez George, Speca Anthony, Kuchta Matthew C, Mcconville David H, Burkhardt Terry J, SCHMIDT Paige, August 18, 2005: WO/2005/075526 (3 worldwide citation)

This invention relates to a catalyst support comprising the result of the combination of: (a) a support comprising hydroxyl groups; (b) a capping agent comprising a boron containing Lewis acid; and (c) an ionic activator, wherein at least some of the capping agent does not form a support bound activ ...


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Burkhardt Terry J, Mehta Aspy K: Process of producing thermoplastic polymer blends. Exxonmobil Chemical Patents, Burkhardt Terry J, Mehta Aspy K, BELL Catherine L, January 25, 2007: WO/2007/011464 (1 worldwide citation)

A process is described for producing a polymer blend comprising (a) a first polymer component comprising a crystalline propylene polymer and (b) a second polymer component comprising a copolymer of propylene with at least one comonomer, wherein the copolymer comprises between about 7 wt% and about 2 ...


8
Burkhardt Terry J, Hart James R, Haygood William T, Li Robert T: Metallocenes and catalyst compositions derived therefrom. Exxonmobil Chemical Patents, Burkhardt Terry J, Hart James R, Haygood William T, Li Robert T, sSCHMIDT Paige, June 19, 2003: WO/2003/050131 (1 worldwide citation)

Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula: (I), wherein M?1¿ preferably is zirconium or hafnium; and R?5¿ is different from hydrogen.


9
Burkhardt Terry J, Stehling Udo M, Hart James R, Haygood William T, Li Robert T, Vizzini James C, Kuchta Matthew C: Propylene polymer. Exxonmobil Chem Patents, March 8, 2006: EP1632506-A1

This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: wherein M 1 is selected from the group consisting of titanium, zir ...


10
Kuchta Matthew C, Stehling Udo M, Li Robert T, Haygood William T, Burkhardt Terry J: Bridged bisindenyl metallocene compositions. Exxonmobil Chem Patents, April 21, 2004: EP1411058-A1

This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. In one embodiment, the metallocenes of the present invention may be represented by the formula: wherein M is a metal of Group 4, 5 ...