Joseph F Floyd

US Patent:

6489413, Dec 3, 2002

Filed:

Jul 13, 2000

Appl. No.:

09/615296

Inventors:

Joseph C. Floyd - Baytown TX
Moses Olukayode Jejelowo - Kingwood TX
Donna Jean Crowther - Baytown TX
George Alan Vaughan - Houston TX
Ching Tai Lue - Houston TX

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08F 416

US Classification:

526160, 526129, 526159, 5263482, 5263485, 5263486

Abstract:

The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one -bonded ring having a C or greater hydrocarbyl, hydrocarbylsilyl or hydrocarbylgermyl substituent said substituent bonded to the ring through a primary carbon atom; and, where the compound contains two -bonded rings, the total number of substituents on the rings is equal to a number from 3 to 10, said rings being asymmetrically substituted where the number of substituents is 3 or 4. The invention process is particularly suitable for preparing ethylene copolymers having an MIR less than about 35, while retaining narrow CD even at high comonomer incorporation rates, and with certain embodiments providing ethylene copolymers having improved melt strength with the low MIR.

US Patent:

6759499, Jul 6, 2004

Filed:

Sep 21, 1999

Appl. No.:

09/400568

Inventors:

Joseph C. Floyd - Baytown TX
Moses Olukayode Jejelowo - Kingwood TX
Donna Jean Crowther - Baytown TX
George Alan Vaughan - Houston TX
Ching Tai Lue - Houston TX

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08F21000

US Classification:

526348, 526352, 5263486, 5263485

Abstract:

The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one -bonded ring having a C or greater hydrocarbyl, hydrocarbylsilyl or hydrocarbylgermyl substituent said substituent bonded to the ring through a primary carbon atom; and, where the compound contains two -bonded rings, the total number of substituents on the rings is equal to a number from 3 to 10, said rings being asymmetrically substituted where the number of substituents is 3 or 4. The invention process is particularly suitable for preparing ethylene copolymers having an MIR less than about 35, while retaining narrow CD even at high comonomer incorporation rates, and with certain embodiments providing ethylene copolymers having improved melt strength with the low MIR.

US Patent:

6800704, Oct 5, 2004

Filed:

Apr 22, 2002

Appl. No.:

10/127984

Inventors:

Joseph C. Floyd - Baytown TX
Moses Olukayode Jejelowo - Kingwood TX
Donna Jean Crowther - Baytown TX
George Alan Vaughan - Houston TX
Ching Tai Lue - Houston TX

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08F 406

US Classification:

526126, 526127, 526160, 526170, 526348, 526352, 5263482, 5263483, 5263484, 5263485, 5263486, 5263487

Abstract:

The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one -bonded ring having a C or greater hydrocarbyl, hydrocarbylsilyl or hydrocarbylgermyl substituent said substituent bonded to the ring through a primary carbon atom; and, where the compound contains two -bonded rings, the total number of substituents on the rings is equal to a number from 3 to 10, said rings being asymmetrically substituted where the number of substituents is 3 or 4. The invention process is particularly suitable for preparing ethylene copolymers having an MIR less than about 35, while retaining narrow CD even at high comonomer incorporation rates, and with certain embodiments providing ethylene copolymers having improved melt strength with the low MIR.

US Patent:

7829495, Nov 9, 2010

Filed:

Aug 31, 2004

Appl. No.:

10/930144

Inventors:

Joseph C. Floyd - Baytown TX, US
Moses Olukayode Jejelowo - Kingwood TX, US
Donna Jean Crowther - Baytown TX, US
George Alan Vaughan - Houston TX, US
Ching Tai Lue - Houston TX, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

B01J 31/00

US Classification:

502152, 502158

Abstract:

The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one π-bonded ring having a Cor greater hydrocarbyl, hydrocarbylsilyl or hydrocarbylgermyl substituent said substituent bonded to the ring through a primary carbon atom; and, where the compound contains two π-bonded rings, the total number of substituents on the rings is equal to a number from 3 to 10, said rings being asymmetrically substituted where the number of substituents is 3 or 4. The invention process is particularly suitable for preparing ethylene copolymers having an MIR less than about 35, while retaining narrow CD even at high comonomer incorporation rates, and with certain embodiments providing ethylene copolymers having improved melt strength with the low MIR.

US Patent:

41015118, Jul 18, 1978

Filed:

Mar 21, 1977

Appl. No.:

5/779903

Inventors:

Joseph C. Floyd - Baytown TX
Don A. Plank - Sarnia, CA

Assignee:

Exxon Research & Engineering Co. - Linden NJ

International Classification:

C08K 537

US Classification:

260 4585T

Abstract:

Novel bisphenol condensation derivatives including polyphosphorous, polyborate, polycarbonate and polysilicate products which are capped with various capping agents such as phenoxy or alkoxy compounds are efffective stabilizers for a wide spectrum of hydrocarbon polymeric materials against their thermal oxidative and photochemical degradations.

US Patent:

40427650, Aug 16, 1977

Filed:

Oct 28, 1976

Appl. No.:

5/736653

Inventors:

Joseph C. Floyd - Baytown TX
Don A. Plank - Sarnia, CA

Assignee:

Exxon Research and Engineering Co. - Linden NJ

International Classification:

C08J 320

US Classification:

526 6

Abstract:

Plastic compositions containing polyolefins and substituted nitrogen heterocyclic compounds having the formula: ##STR1## wherein X is nitrogen or CH, and R. sub. 1, R. sub. 2, R. sub. 3 and R. sub. 4 are from the group hydrogen; a straight or branched chain alkyl group having from 1 to 6 carbon atoms; cyano; nitro; lower alkoxy; fluorine, dialkylamino, phenyl, halo-phenyl, benzyl and halo-benzyl, have been found to be photodegradable plastic materials for use, for example, as wrapping films and agricultural mulching films.

US Patent:

39937135, Nov 23, 1976

Filed:

Aug 6, 1975

Appl. No.:

5/602212

Inventors:

Robert A. VAN Brederode - Baytown TX
Joseph C. Floyd - Baytown TX

Assignee:

Exxon Research and Engineering Company - Linden NJ

International Classification:

C08F 612

US Classification:

260878R

Abstract:

Finely powdered high density polymer may be obtained by spraying a solution of a critical maximum amount of a polymer, such as 3 weight % polypropylene in heptane, into a drying atmosphere in which said solvent has a vapor pressure of 50 to 400 mm of Hg.

US Patent:

39963101, Dec 7, 1976

Filed:

Aug 1, 1975

Appl. No.:

5/600994

Inventors:

Joseph C. Floyd - Baytown TX
Don A. Plank - Baytown TX

Assignee:

Exxon Research and Engineering Company - Linden NJ

International Classification:

C08L 2300

US Classification:

260878R

Abstract:

Derivatives of grafted polymers are prepared in solvent phase. The resulting products, which can be tailor-made in terms of certain properties impart, when used in relatively small quantities, certain additive functions to the properties of other polymers or the modified products of the invention can be used by themselves per se for conventional plastic uses.