James D Farley

US Patent:

6800692, Oct 5, 2004

Filed:

Mar 24, 2003

Appl. No.:

10/311528

Inventors:

James McLeod Farley - League City TX
Richard Wayne Halle - Houston TX
George Panagopoulous - Cypress TX
Donna Sue Davis - Beaumont TX
Douglas J. Laurent - Appleton WI
Alan M. Malakoff - Houston TX
David M. Simpson - The Woodlands TX
Kevin Cable - Waynesville NC

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08F 800

US Classification:

525191, 525216, 525232, 525240

Abstract:

The present invention provides a polymer blend suitable for use as a film or a coating, the polymer blend including from 1 to 99% by weight of a metallocene-produced VLDPE polymer having a density less than 0. 916 g/cm , and from 1 to 99% by weight of an LDPE polymer having a density of from 0. 916 to 0. 928 g/cm wherein the sum of (a) and (b) is 100%. The VLDPE polymer can have a melt index of from 6 to 15 dg/min, or from 9 to 12 dg/min. The present invention further provides polymeric films extrusion cast from such polymer blends, and articles having a flexible substrate and a polymeric film extrusion-coated on the substrate.

US Patent:

6828394, Dec 7, 2004

Filed:

Jul 19, 2002

Appl. No.:

10/199808

Inventors:

George Alan Vaughan - Houston TX
John F. Szul - Nitro WV
Matthew Gary McKee - Blacksburg VA
James McLeod Farley - League City TX
Ching-Tai Lue - Houston TX

Assignee:

Univation Technologies, LLC - Houston TX

International Classification:

C08F 444

US Classification:

526114, 526113, 526118, 526119, 526126, 526161

Abstract:

The present invention provides polymerization catalyst compounds, catalyst systems including these catalyst compounds, and to their use in the polymerization of ethylene and at least one comonomer. In particular, the invention provides a catalyst system comprising a poor comonomer incorporating catalyst compound and a good comonomer incorporating catalyst compound. Preferably, the low comonomer incorporating catalyst compound is a metallocene containing at least one substituted or unsubstituted fused ring cyclopentadienyl based ligand which is substantially directed to the front of the molecule, contains a long bridging group, or which contains a methyl substitution pattern which correlates to poor comonomer incorporation. The invention also provides methods of selecting the poor comonomer incorporating metallocene to pair with the good comonomer incorporating metallocene to produce polymers that are easy to process into a variety of articles, especially polyethylene based film, having enhanced properties.

US Patent:

6932592, Aug 23, 2005

Filed:

Jun 22, 2001

Appl. No.:

10/311114

Inventors:

James M. Farley - League City TX, US
Richard W. Halle - Houston TX, US
George Panagopoulos - Cypress TX, US
Jerry M. Johnson - League City TX, US
Douglas J. Laurent - Appleton WI, US
Alan M. Malakoff - Houston TX, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

B23B027/32

US Classification:

425523, 428512, 428461, 525240, 526349, 526943

Abstract:

A very low density polyethylene having a density of 0. 890 to 0. 915 and a Dart Drop value of at least about 450 g/mil or above is disclosed. Gas phase polymerization methods are also disclosed for making very low density linear polyolefins utilizing a metallocene catalyst, and the resulting polyolefin products. In a specific embodiment, a gas phase polymerization process is disclosed relating to the formation of a linear polyethylene having a very low density, e. g. , ranging from 0. 890 to 0. 915, but with improved toughness.

US Patent:

6956088, Oct 18, 2005

Filed:

Jul 19, 2002

Appl. No.:

10/199446

Inventors:

James McLeod Farley - League City TX, US
John F. Szul - Nitro WV, US
Matthew Gary McKee - Blacksburg VA, US

Assignee:

Univation Technologies, LLC - Houston TX

International Classification:

C08F004/06
C08F210/14
B32B027/32
B29C047/88

US Classification:

526113, 526348, 5263481, 5263485, 526943, 428212, 428220, 428523, 428910, 2641761, 2642095, 2642112

Abstract:

Metallocene catalyzed polyethylenes are found to have improved physical properties, improved processability and improved balance of properties. Surprisingly, there is a direct relationship between MD shrinkage, and MD tear. Additionally, MD tear is greater than TD tear, and MD tear is also greater than intrinsic tear. MD tear to TD tear ratios are above 0. 9, and dart drop impact is above 500 g/mil. The polyethylenes have a relatively broad composition distribution and relatively broad molecular weight distribution.

US Patent:

7125933, Oct 24, 2006

Filed:

Jun 22, 2001

Appl. No.:

10/297777

Inventors:

Paul Masten German - Friendswood TX, US
James McLeod Farley - League City TX, US
Richard W. Halle - Houston TX, US
George Panagopoulos - Atlanta GA, US

Assignee:

Univation Technologies, LLC - Houston TX

International Classification:

C08L 23/00
C08L 23/04

US Classification:

525191, 525240

Abstract:

Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and linear low density polyethylene (LLDPE) are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0. 916 g/cm3, the VLDPE polymer preferably being linear and without long chain branching, and a LLDPE polymer having a density of from 0. 916 to 0. 940 g/cm3. The polymer blends are particularly suitable in blown and cast film applications.

US Patent:

7135526, Nov 14, 2006

Filed:

Jun 22, 2001

Appl. No.:

10/297900

Inventors:

James M. Farley - League City TX, US
Richard W. Halle - Houston TX, US
George Panagopoulos - Atlanta GA, US
Jerry M. Johnson - League City TX, US

Assignee:

Univation Technologies, LLC - Houston TX

International Classification:

C08L 23/00
C08L 23/04

US Classification:

525191, 525240

Abstract:

Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and high density polyethylene (HDPE) are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0. 916 g/cm, the VLDPE polymer preferably being linear and without long chain branching, and a HDPE polymer having a density of greater than 0. 940 g/cm. The polymer blends are particularly suitable in blown and cast film applications.

US Patent:

7141632, Nov 28, 2006

Filed:

Apr 2, 2004

Appl. No.:

10/817555

Inventors:

George Alan Vaughan - Houston TX, US
John F. Szul - Nitro WV, US
Matthew Gary McKee - Blacksburg VA, US
James McLeod Farley - League City TX, US
Ching-Tai Lue - Houston TX, US

Assignee:

Univation Technologies, LLC - Houston TX

International Classification:

C08F 4/44
C08F 4/64
C08F 4/643
C08F 4/6192
C08F 4/6392
C08F 4/6592

US Classification:

526114, 526113, 526118, 526119, 526160, 526126, 526127, 526943

Abstract:

The present invention provides polymerization catalyst compounds, catalyst systems including these catalyst compounds, and to their use in the polymerization of ethylene and at least one comonomer. In particular, the invention provides a catalyst system comprising a poor comonomer incorporating catalyst compound and a good comonomer incorporating catalyst compound. Preferably, the low comonomer incorporating catalyst compound is a metallocene containing at least one substituted or unsubstituted fused ring cyclopentadienyl based ligand which is substantially directed to the front of the molecule, contains a long bridging group, or which contains a methyl substitution pattern which correlates to poor comonomer incorporation. The invention also provides methods of selecting the poor comonomer incorporating metallocene to pair with the good comonomer incorporating metallocene to produce polymers that are easy to process into a variety of articles, especially polyethylene based film, having enhanced properties.

US Patent:

8067518, Nov 29, 2011

Filed:

Jun 7, 2007

Appl. No.:

11/811015

Inventors:

Christopher R. Davey - Houston TX, US
James M. Farley - League City TX, US
Rainer Kolb - Kingwood TX, US
Mark P. Ossowski - Bridgewater NJ, US

Assignee:

Univation Technologies, LLC - Houston TX

International Classification:

C08F 4/76
C08F 210/02
C08F 210/06
C08F 210/08
C08F 210/14
C08F 210/16

US Classification:

526348, 526183, 526185, 526188, 526190, 526192, 526226, 5263481, 5263482, 5263486, 526943

Abstract:

Ethylene alpha-olefin copolymers formed by contacting at least one supported metallocene catalyst, ethylene, and an alpha-olefin in a gas phase reactor are disclosed. In some embodiments, the polymer may have: a density of between 0. 890 and 0. 970 g/cc; a melt index of between 0. 7 and 200 dg/min; a melt index ratio of less than 30; an ESCR value of greater than 1000 hours; and a 1% secant modulus of greater than 75,000 psi. In other embodiments, the polymer may have: a density of between 0. 930 g/cc and 0. 970 g/cc; a melt index of between 10 dg/min and 200 dg/min; a melt index ratio of between 10 and 25; a part weight of greater than 3 g and a part length of greater than 38 cm in a spiral flow test, and; a zero shear viscosity of less than 150 Pas. Processes to produce these polymers are also disclosed.