Michael Ray Elder

US Patent:

7452949, Nov 18, 2008

Filed:

Dec 6, 2004

Appl. No.:

10/581985

Inventors:

Yoshikuni Okumura - Kanagawa, JP
Ilya Nifant'ev - Moscow, RU
Michael J. Elder - Columbia MD, US
Pavel V. Ivchenko - Moscow, RU
Vladimir V. Bagrov - Moscow, RU

Assignee:

Basell Polyolefine GmbH - Wesseling

International Classification:

C08F 4/42

US Classification:

526160, 526170, 526943, 526348, 556 53

Abstract:

The present invention relates to organometallic transition metal compounds of the formula (I).

US Patent:

7544749, Jun 9, 2009

Filed:

Feb 5, 2004

Appl. No.:

10/543961

Inventors:

Robert L. Jones - Frankfurt, DE
Naka Seidel - Frankfurt, DE
Michael J. Elder - Columbia MD, US
John A. Ewen - Lake Placid FL, US

Assignee:

Basell Polyolefine GmbH - Wesseling

International Classification:

C08F 4/72
C08F 4/64

US Classification:

526172, 526161, 526351

Abstract:

A catalyst system obtained by reacting at least one chiral transition metal compound and at least one cocatalyst, where the chiral transition metal compound is a transition metal compound of formula (Ia) or one of its enantiomers of the formula (Ia*),.

US Patent:

20090082533, Mar 26, 2009

Filed:

Nov 18, 2005

Appl. No.:

11/793844

Inventors:

Michael J. Elder - Baltimore MD, US

Assignee:

Basell Plolyolefine GmbH - Wesseling

International Classification:

C07D 333/78
C08F 4/52

US Classification:

526160, 549 3, 502117

Abstract:

The present invention relates to a process for preparing olefin polymers having a molar mass Mof from 500 to 50 000 g/mol by polymerization or copolymerization of at least one olefin of the formula R—CH═CH—R, where Rand Rare identical or different and are each a hydrogen atom or a hydrocarbon radical having from 1 to 20 carbon atoms, or Rand Rtogether with the atoms connecting them can form a ring, at a temperature of from −60 to 200 C. and a pressure of from 0.5 to 100 bar, in solution, in suspension or in the gas phase, in the presence of hydrogen and in the presence of a catalyst system comprising at least one organometallic transition metal compound and at least one cocatalyst, wherein the organometallic transition metal compound is a compound of the formula (I), specific organometallic transition metal compounds, biscyclopentadienyl ligand systems having such a specific substitution pattern, catalyst systems comprising at least one of the organometallic transition metal compounds of the invention and the use of the biscyclopentadienyl ligand systems of the invention for preparing organometallic transition metal compounds.

US Patent:

20090234084, Sep 17, 2009

Filed:

Jun 27, 2006

Appl. No.:

11/922668

Inventors:

Michael J. Elder - Baltimore MD, US
Robert L. Jones - Oakland CA, US
Luigi Resconi - Ferrara, IT

Assignee:

Basell Polyolefine GmbH - Wesseling

International Classification:

C07D 333/78
B01J 31/14
C08F 4/52

US Classification:

526126, 502120, 502117, 549 3, 549 4

Abstract:

A metallocene compound of formula (I) wherein M is zirconium titanium or hafnium; X is hydrogen, halogen or an hydrocarbon group; R, R, R, R, R, R, R, and R, Rand Rare hydrogen atoms, or C-Chydrocarbon radicals optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; Rand R, equal to or different from each other, are linear or branched, C-C-alkyl radicals, and Ris a C-Chydrocarbon radical optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements;

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:

20220380491, Dec 1, 2022

Filed:

Sep 10, 2020

Appl. No.:

17/761451

Inventors:

- Columbia MD, US
Rose KENT - Columbia MD, US
Adam MARWITZ - Columbia MD, US
Ronald EPSTEIN - Columbia MD, US
Michael ELDER - Columbia MD, US

Assignee:

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

International Classification:

C08F 4/654
C08F 110/06
C08F 4/646

Abstract:

A Ziegler-Natta catalyst composition is disclosed. The catalyst composition includes an internal electron donor with improved polymerization kinetics, a long lifetime, improved stereoselectivity and/or improved hydrogen response.

US Patent:

20220220060, Jul 14, 2022

Filed:

Sep 16, 2020

Appl. No.:

17/761555

Inventors:

- Columbia MD, US
Michael MILLER - Columbia MD, US
Michael ELDER - Columbia MD, US
Vladimir MARIN - Columbia MD, US
Timothy BOYER - Columbia MD, US

Assignee:

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

International Classification:

C07C 69/78
C08F 110/06

Abstract:

A Ziegler-Natta catalyst composition is disclosed. The catalyst composition is formed from a procatalyst containing a magnesium moiety and a titanium moiety. At least one internal electron donor is incorporated into the procatalyst. During a titanation procedure in conjunction with the internal electron donor, a titanium extractant is used to remove or deactivate low activity or atactic titanium active sites.