Ayusman Sen

US Patent:

6344594, Feb 5, 2002

Filed:

Apr 14, 2000

Appl. No.:

09/550089

Inventors:

Ayusman Sen - State College PA
Shahid Murtuza - Chicago IL
Seth B. Harkins - Pasadena CA
Cecily Andes - State College PA

Assignee:

The Penn State Research Foundation - University Park PA

International Classification:

C07C 208

US Classification:

585511, 585510, 585512, 585516

Abstract:

Ethylene is trimerized to form 1-hexene, at a selectivity of up to about 99 mole percent, by contacting ethylene, at an ethylene pressure of from about 200-1500 psig and at a reaction temperature of from about 0Â C. to about 100Â C. , with a catalyst comprising a tantalum compound (e. g. , TaCl ) and a alkylating component comprising a metal hydrocarbyl compound or a metal hydrocarbyl halide compound (e. g. , Sn(CH ) ).

US Patent:

6407299, Jun 18, 2002

Filed:

Jun 2, 2000

Appl. No.:

09/586091

Inventors:

Ayusman Sen - State College PA
Jang Sub Kim - State College PA

Assignee:

ExxonMobile Research and Engineering Company - Annandale NJ
The Pennsylvania State Research Foundation - University Park PA

International Classification:

C10M10704

US Classification:

585 10, 585 18, 585511, 585525, 502169, 502202, 502226

Abstract:

The present invention is a two-component catalyst system comprising (a) an alkyl magnesium (MgR ) component and (b) a Lewis acid component. The catalyst system is used for catalyzing the oligomerization and polymerization of ethylene and/or -olefins to form homopolymers and copolymers. The products range from highly linear, high molecular weight, solid polymers to highly branched, lower molecular weight oils.

US Patent:

6455650, Sep 24, 2002

Filed:

Oct 5, 1999

Appl. No.:

09/412935

Inventors:

John-Henry Lipian - North Royalton OH
Larry F. Rhodes - Silver Lake OH
Brian L. Goodall - Baton Rouge LA
Andrew Bell - Lakewood OH
Richard A. Mimna - Cleveland Heights OH
John C. Fondran - Cleveland Heights OH
Saikumar Jayaraman - Twinsburg PA
April D. Hennis - State College PA
Christine N. Elia - State College PA
Jennifer D. Polley - Exton PA
Ayusman Sen - State College PA

Assignee:

The B.F. Goodrich Company - Richfield OH
The Penn State Research Foundation - University Park PA

International Classification:

C08F 480

US Classification:

526171, 526281, 526282, 526284, 526285, 526301, 526308, 526309, 526310, 526319, 526332, 5263471

Abstract:

Methods for the addition polymerization of cycloolefins using a cationic Group 10 metal complex and a weakly coordinating anion of the formula: wherein [(Râ) M(Lâ) (Lâ) ] is a cation complex where M represents a Group 10 transition metal; Râ represents an anionic hydrocarbyl containing ligand; Lâ represents a Group 15 neutral electron donor ligand; Lâ represents a labile neutral electron donor ligand; x is 1 or 2; and y is 0, 1, 2, or 3; and z is 0 or 1, wherein the sum of x, y, and z is 4; and [WCA] represents a weakly coordinating counteranion complex; and b and d are numbers representing the number of times the cation complex and weakly coordinating counteranion complex are taken to balance the electronic charge on the overall catalyst complex.

US Patent:

6489416, Dec 3, 2002

Filed:

Feb 7, 2001

Appl. No.:

09/778966

Inventors:

Ayusman Sen - State College PA
Shengsheng Liu - State College PA

Assignee:

The Penn State Research Foundation - University Park PA

International Classification:

C08F 452

US Classification:

526196, 526185, 526186, 526189, 526198, 502152

Abstract:

Ethylene and/or propylene are polymerized to form high molecular weight, linear polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which consists essentially of (1) an aluminum alkyl component, such as trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-octylaluminum and diethylaluminum hydride and (2) a Lewis acid or Lewis acid derivative component, such as _B(C F ) , {(CH ) N(H)(C H )} {B(C F ) } , {(C H ) NH} {B(C F ) } , {(C F ) C} {B(C F ) } , {(C F ) C} {B(C F ) (Cl) }, (C H ) Al(OCH ), (C H ) Al(2,6-di-t-butyl-4-methylphenoxide), (C H )Al(2,6-di-t-butylphenoxide) , (C H ) Al(2,6-di-t-butylphenoxide), 2,6-di-t butylphenol. methyl-aluminoxane or an alkylaluminoxane, and which may be completely free any transition metal component(s).

US Patent:

6518384, Feb 11, 2003

Filed:

Nov 1, 2000

Appl. No.:

09/704340

Inventors:

Ayusman Sen - State College PA 16801
Shahid Murtuza - State College PA 16801

International Classification:

C08F21000

US Classification:

526348, 526351, 526352, 526160, 526943, 526121, 526136, 526237, 502114, 585520, 585522, 585523

Abstract:

Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an aluminum or gallium trihalide component, and, optionally, (3) a Group 4 metallocene dihalide component.

US Patent:

6593440, Jul 15, 2003

Filed:

Aug 16, 2001

Appl. No.:

09/930197

Inventors:

Ayusman Sen - State College PA
Smita Kacker - Bridgewater NJ
April D. Hennis - Ashland VA
Jennifer D. Polley - Chapel Hill NC

Assignee:

Penn State Research Foundation - University Park PA

International Classification:

C08J 3600

US Classification:

526281, 526172, 526328, 526329, 526319, 5263297, 526171

Abstract:

Homopolymers or copolymers of acrylates, homopolymers or copolymers of norbornenes, and copolymers of acrylates with norbornenes, may be prepared by contacting acrylate and/or norbornene monomer reactant under polymerization conditions and in the presence of a solvent with a catalyst system consisting essentially of a Pd(II) dimer component having the formula: [(L)Pd(R)(X)] , where L is a monodentate phosphorus or nitrogen ligand, X is an anionic group, and R is an alkyl or aryl group.

US Patent:

7087691, Aug 8, 2006

Filed:

Jul 7, 2003

Appl. No.:

10/614502

Inventors:

Larry F. Rhodes - Silver Lake OH, US
Larry Seger - Gates Mills OH, US
Ayusman Sen - University Park PA, US
April Hennis Marchetti - Ashland VA, US

Assignee:

Promerus LLC - Brecksville OH
Penn State Research Foundation - University Park PA

International Classification:

G03C 1/492

US Classification:

526171, 4302701, 522162, 526283, 526308, 526309, 526328, 526329

Abstract:

Embodiments in accordance with the present invention encompass photo-imageable compositions that include polymers of acrylate-type monomers and norbornene-type monomers. In some embodiments a catalyst system comprising a cationic or a neutral Pd(II) dimer component having the formula (Allyl)Pd(P(R)) or (L′)[(L)Pd(R)(X)], respectively is employed to effect polymerization. In other embodiments a free radical or living free radical catalyst is employed to effect polymerization. At least one of the acrylate-type monomers and norbornene-type monomers of the polymer embodiments of the present invention encompass an acid labile moiety. Some polymer embodiments of the present invention include more than one type of acrylate-type monomer and norbornene-type monomer. Embodiments of the present invention include forming a patterned layer on a substrate and some embodiments include transferring the patterned structure to a material layer first formed on the substrate.

US Patent:

7119226, Oct 10, 2006

Filed:

Apr 13, 2005

Appl. No.:

11/105245

Inventors:

Ayusman Sen - State College PA, US
Minren Lin - State College PA, US

Assignee:

The Penn State Research Foundation - University Park PA

International Classification:

C07C 309/00

US Classification:

562123

Abstract:

A process for the facile two-step synthesis of methanol from methane is disclosed. In accordance with the invention, an appropriate combination of initiator and reaction medium is employed to achieve methane conversion in very high selectivity and yield under near-ambient temperature.