Michael G Jensen

US Patent:

8318873, Nov 27, 2012

Filed:

Feb 3, 2011

Appl. No.:

13/020334

Inventors:

Kumudini C. Jayaratne - Helsinki, FI
Michael D. Jensen - Laurel MD, US
Qing Yang - Bartlesville OK, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/52
C08F 4/64
C08F 4/76

US Classification:

526114, 526113, 526119, 526118, 526130, 526129, 526127, 526126, 526135, 526137, 526144, 526941, 526943, 526348, 5263482, 5263483, 5263484, 5263485, 5263486, 526351, 526352, 526346

Abstract:

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.

US Patent:

8426538, Apr 23, 2013

Filed:

Sep 8, 2011

Appl. No.:

13/227785

Inventors:

Michael D. Jensen - Laurel MD, US
Max P. McDaniel - Bartlesville OK, US
Joel L. Martin - Bartlesville OK, US
Elizabeth A. Benham - Spring TX, US
Randy L. Muninger - Dewey OK, US
Gary G. Jerdee - Orange TX, US
Ashish M. Sukhadia - Bartlesville OK, US
Qing R. Yang - Bartlesville OK, US
Matthew G. Thorn - Lebanon OH, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/52
C08F 4/64
C08F 4/76

US Classification:

526160, 526161, 526170, 526172, 526943, 526941, 526904, 526126, 526127, 526129, 526130, 526135, 526137, 526348, 5263485, 5263486, 526351, 526352, 502103, 502104, 502118, 502119

Abstract:

This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.

US Patent:

8507621, Aug 13, 2013

Filed:

Oct 30, 2012

Appl. No.:

13/663528

Inventors:

Michael D. Jensen - Laurel MD, US
Qing Yang - Bartlesville OK, US

Assignee:

Chevron Phillips Chemical Company LP - The Woodlands TX

International Classification:

C08F 4/64
C08F 4/76
C08F 4/52

US Classification:

526113, 526160, 526170, 526129, 526134, 526114, 526116, 526943, 526941, 526348

Abstract:

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.

US Patent:

20120071614, Mar 22, 2012

Filed:

Jan 7, 2010

Appl. No.:

13/143003

Inventors:

Stephen R. Schmidt - Silver Spring MD, US
David M. Chapman - Ellicott City MD, US
Manoj M. Koranne - Clarksville MD, US
Michael D. Jensen - Laurel MD, US

International Classification:

C08F 4/78
C08F 110/00
C08F 4/76
C08F 4/58
C08F 4/42
C08F 4/80

US Classification:

526108, 502263, 502250, 502258, 502256, 502242, 502259, 502262, 502251

Abstract:

The invention concerns catalysts comprising (i) a cladded catalyst support comprising (a) a core which comprises alumina particles and (b) about 1 to about 40 weight percent silica cladding, based on the weight of the cladded catalyst support, on the surface of the core; the catalyst support having a BET surface area of greater than 20 m2/g and a porosity of at least about 0.2 cc/g; and (ii) 0.1 to 10 weight percent, based on the weight of the catalyst, of catalytically active transition metal on the surface of the cladded catalyst support; wherein the catalyst support has a normalized sulfur uptake (NSU) of up to 25 ?g/m2. The invention also concerns the production and use of such catalysts.

US Patent:

20130289227, Oct 31, 2013

Filed:

Jan 12, 2012

Appl. No.:

13/979541

Inventors:

Michael D. Jensen - Laurel MD, US
Michael J. Elder - Baltimore MD, US
Andrew G. Singleton - Ellicott City MD, US
Stephen R. Schmidt - Silver Spring MD, US
Patrick J. Kerwin - Grasonville MD, US
Fengjun Hua - Ellicott City MD, US

Assignee:

W.R. GRACE & CO.-CONN - Columbia MD

International Classification:

C08F 4/76

US Classification:

526114, 502129, 502113, 502104

Abstract:

Olefin polymerization catalysts or catalyst systems comprising a mixture, contact product, reaction product or complex comprising as elements or components: (A) at least one metallocene pre-catalyst compound or polymerization active metallocene compound; (B) at least one titanium containing metallocene compound; and when (A) is a metallocene pre-catalyst compound, (C) at least one activator; provided however: (I) the titanium-containing metallocene compound is inactive or substantially inactive for the polymerization of olefins prior to or concurrently with the use of the catalyst system for olefin polymerization. Also disclosed are processes for producing the catalyst system and polyolefins having desirable combinations of properties, including melt index and molecular weight distribution, which properties are particularly desirable for the manufacture of polyolefin film products, especially LLDPE film A preferred catalyst comprises a zirconium or hafnium metal containing metallocene, an inactivated titanocene and a SiO2 support carrier.

US Patent:

20150210784, Jul 30, 2015

Filed:

Jan 30, 2014

Appl. No.:

13/999217

Inventors:

Stephen R. Schmidt - Silver Spring MD, US
David M. Chapman - Ellicott City MD, US
Manoj M. Koranne - Clarksville MD, US
Michael D. Jensen - Laurel MD, US

Assignee:

W. R Grace & Co.-Conn. - Columbia MD

International Classification:

C08F 4/18
C08F 4/22

Abstract:

The invention concerns catalysts comprising (i) a clad catalyst support comprising (a) a core which comprises alumina particles and (b) about 1 to about 40 weight percent silica cladding, based on the weight of the clad catalyst support, on the surface of the core; the catalyst support having a BET surface area of greater than 20 m/g and a porosity of at least about 0.2 cc/g; and (ii) 0.1 to 10 weight percent, based on the weight of the catalyst, of catalytically active transition metal on the surface of the clad catalyst support; wherein the catalyst support has a normalized sulfur uptake (NSU) of up to 25 μg/m. The invention also concerns the production and use of such catalyst.