Steven Frank Gray

US Patent:

6486274, Nov 26, 2002

Filed:

Oct 13, 2000

Appl. No.:

09/687688

Inventors:

Steven D. Gray - League City TX
Tim J. Coffy - Houston TX

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

C08F 4614

US Classification:

526119, 526118, 5261242, 5261243, 5261249, 502104, 502110, 502111, 502115, 502126, 502129, 502133

Abstract:

A Ziegler-Natta type catalyst having an improved hydrogen response provides for narrowing of the MWD of resulting polyolefins polymerized using such catalyst, with such catalyst generally made by a) contacting a soluble magnesium dialkoxide compound of the general formula Mg(ORâ) with a halogenating agent capable of exchanging one halogen for one alkoxide to form a reaction product A, where Râ is a hydrocarbyl or substituted hydrocarbyl having from 1 to 20 carbon atoms; b) contacting reaction product A with a first halogenating/titanating agent to form reaction product B; and c) contacting reaction product B with a second halogenating/titanating agent to form a catalyst component; wherein in at least one of steps b) and c), the halogenating/titanating agent is a blend of Ti(OPr) and TiCl. Catalyst components, catalysts, catalyst systems, polyolefin polymers, and methods of forming each are disclosed.

US Patent:

6693058, Feb 17, 2004

Filed:

Oct 13, 2000

Appl. No.:

09/687560

Inventors:

Steven D. Gray - Houston TX
Tim J. Coffy - Houston TX

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

B01J 3100

US Classification:

502103

Abstract:

A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation that includes treating a magnesium dialkoxide compound with halogenating/titanating agents, and an organoaluminum preactivating agent. The catalyst may be used in the polymerization of olefins, particularly ethylene, to control the molecular weight distribution and the fluff morphology of the resulting polyolefins.

US Patent:

6734134, May 11, 2004

Filed:

Oct 13, 2000

Appl. No.:

09/687378

Inventors:

Steven D. Gray - League City TX
Tim J. Coffy - Houston TX

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

B01J 3100

US Classification:

502132, 502133, 502107, 502110, 502113, 502115, 502116, 502125, 502126, 502134

Abstract:

A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation that includes treating a magnesium dialkoxide compound with two halogenating/titanating agents, the second stronger than the first, an organoaluminum preactivating agent, and a heat treatment. The catalyst may be used in the polymerization of olefins, particularly ethylene, to control the molecular weight distribution of the resulting polyolefins.

US Patent:

6790804, Sep 14, 2004

Filed:

Jun 27, 2002

Appl. No.:

10/186262

Inventors:

Steven D. Gray - League City TX
Tim J. Coffy - Houston TX
Edwar S. Shamshoum - Gibsonia PA

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

B01J 3100

US Classification:

502103, 502104, 502115, 502172, 525 21

Abstract:

A process of forming a polyolefin catalyst component includes contacting a metal compound of the formula MR with a diketone to form a metal bis(diketonate) having the formula M(OCRCRâCRO) , wherein M is a Group IIA or Group VIIB metal, and wherein R and Râ are each hydrocarbyls or substituted hydrocarbyls having from 1 to 20 carbons atoms. Catalyst components, catalysts, polyolefin polymers, catalysts systems, and methods of preparing same are disclosed.

US Patent:

6846859, Jan 25, 2005

Filed:

May 31, 2002

Appl. No.:

10/160462

Inventors:

Tim J. Coffy - Houston TX, US
Steven D. Gray - League City TX, US
Gerhard K. Guenther - Seabrook TX, US

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

C08L 552

US Classification:

524128, 524151, 524121, 524349, 524147, 524585

Abstract:

The present invention includes a polyolefin composition having reduced coloration with aging. The polyolefin composition comprises at least one polyolefin, an effective amount of a primary phenolic antioxidant to promote long term thermal stability of the polymer composition, and an effective amount of a phosphite processing stabilizer to promote thermal stability of the polymer composition during melt processing. The polymer composition further comprises an effective amount of a sacrificial phosphite antioxidant to reduce the yellowness index of the polymer composition. The sacrificial phosphite antioxidant and the phosphite processing stabilizer are not the same compound.

US Patent:

6846887, Jan 25, 2005

Filed:

Feb 18, 2003

Appl. No.:

10/370365

Inventors:

Steven D. Gray - League City TX, US
Tim J. Coffy - Houston TX, US
Edwar S. Shamshoum - Gibsonia PA, US
Hong Chen - Atlanta GA, US

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

C08F 4654
C08F 4655

US Classification:

5261242, 526 75, 5261247, 5261231, 502115, 502132

Abstract:

A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst can comprise a reduced number of catalyst particles having a size of 40 microns or less. The prepolymerized catalyst can be used in a polymerization process to produce polymer fluff particles with a reduced number of polymer fluff fines than the Ziegler-Natta type catalyst.

US Patent:

6864207, Mar 8, 2005

Filed:

Sep 22, 2003

Appl. No.:

10/667546

Inventors:

David W. Knoeppel - League City TX, US
Tim J. Coffy - Houston TX, US
Henry Enriquez - Pearland TX, US
Steven D. Gray - Houston TX, US

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

B01J031/00
B01J037/00
C08F004/02
C08F004/60

US Classification:

502110, 502114, 502115, 502132, 502133, 502134

Abstract:

A process for making a polyolefin catalyst component, catalyst and polymer resin is disclosed. Controlling the viscosity of a catalyst synthesis solution with the addition of aluminum alkyl alters the precipitation of the catalyst component from a catalyst synthesis solution. The average particle size of the catalyst component increases with an increased concentration of aluminum alkyl in the synthesis solution. The catalyst component can be produced by a process comprising contacting a magnesium alkyl compound with an alcohol and an aluminum alkyl to form a magnesium dialkoxide. Catalyst components, catalysts, catalyst systems, polyolefin, products made therewith, and methods of forming each are disclosed. The reaction products can be washed with a hydrocarbon solvent to reduce titanium species [Ti] content to less than about 100 mmol/L.

US Patent:

6916895, Jul 12, 2005

Filed:

Oct 16, 2003

Appl. No.:

10/687126

Inventors:

Steven D. Gray - Houston TX, US
Tim J. Coffy - Houston TX, US

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

C08F110/02

US Classification:

526352, 5261241, 5261231, 5261242, 5261243, 526158, 502103, 502115, 502116, 502134, 502132

Abstract:

A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation that includes treating a magnesium dialkoxide compound with halogenating/titanating agents, an organoaluminum preactivating agent, and a heat treatment. The catalyst may be used in the polymerization of olefins, particularly ethylene, to control the molecular weight distribution of the resulting polyolefins.

Address:

542 Lathrop St, Houston, TX 77020

VIN:

5GRGN22U27H105547

Make:

HUMMER

Model:

H2 SUT

Year:

2007