Jennifer Petoff resumes & CV records
Resumes
Jennifer L Petoff, 50Miami, FL
Jennifer Petoff Phones & Addresses
Miami, FL
1998 Pacific Ave, San Francisco, CA 94109 415-4091470
1998 Pacific Ave #105, San Francisco, CA 94109
Philadelphia, PA
Blue Bell, PA
282 Cinnabar Ln, Morrisville, PA 19067 215-3691558 215-4932649
Yardley, PA
Belle Mead, NJ
Sunnyvale, CA
Buffalo, NY
Rochester, NY
Buck, PA
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Publications & IP owners
Us Patents
Metallocene Catalysts For Synthesis Of High-Melting Polyolefin Copolymer Elastomers
US Patent:
6479685, Nov 12, 2002
Filed:
Dec 29, 2000
Appl. No.:
09/752373
Inventors:
Robert M. Waymouth - Palo Alto CA
Raisa L. Kravchenko - Wilmington DE
Jennifer Maciejewski Petoff - Belle Mead NJ
Joyce Hung - Stanford CA
Raisa L. Kravchenko - Wilmington DE
Jennifer Maciejewski Petoff - Belle Mead NJ
Joyce Hung - Stanford CA
Assignee:
The Board of Trustees of the Leland Standard Junior University - Stanford CA
International Classification:
C07F 1700
US Classification:
556 53, 526160, 526943, 502152
Abstract:
Metallocene catalysts having plural coordination geometries for synthesis of high melting polyolefin copolymers suitable as thermoplastic elastomers. The inventive catalysts comprise unbridged, substituted or unsubstituted cyclopentadienyl metallocene catalysts that are capable of inter-converting between states with different polymerization or copolymerization characteristics, which interconversion is controlled by selecting the substituents of the cyclopentadienyl ligands so that the rate of interconversion of the two states is within several orders of magnitude of the rate of formation of a single polymer chain. Where r r the polymer can be characterized as multiblock; where r r , the result is a polymer blend and where r /r is close to 1, the resulting polymer is a mixture of blend and multiblock. The inventive metallocene catalysts are able to interconvert between more than two states, with embodiments of four states being shown in FIG.
High-Melting Polyolefin Copolymer Elastomers, Catalysts And Methods Of Synthesis
US Patent:
6518378, Feb 11, 2003
Filed:
Dec 29, 2000
Appl. No.:
09/752034
Inventors:
Robert M. Waymouth - Palo Alto CA
Raisa L. Kravchenko - Wilmington DE
Jennifer Maciejewski Petoff - Belle Mead NJ
Joyce Hung - Stanford CA
Raisa L. Kravchenko - Wilmington DE
Jennifer Maciejewski Petoff - Belle Mead NJ
Joyce Hung - Stanford CA
Assignee:
The Board of Trustees of the Leland Stanford Junior University - Stanford CA
International Classification:
C08F 444
US Classification:
526160, 526348, 526943, 502117, 502152, 556 53
Abstract:
This invention relates to high melting polyolefin copolymers suitable as thermoplastic elastomers and catalysts and methods for their synthesis. These elastomeric olefin copolymers are characterized by a mole fraction of crystallizable component X from about 30 to about 99%; low glass transition temperatures, below -20Â C. , and typically below -50Â C. ; melting points above about 90Â C. ; high molecular weights; a molecular weight distribution M /M /=10; and a narrow composition distribution between chains of /=15%. The novel copolymers of the invention range from reactor blends to multiblock copolymers that can be sequentially fractionated into fractions of differing crystallinities, which fractions nevertheless show compositions of comonomers which differ by less than 15% from the parent polymer (reactor product). The invention also relates to a process for producing such copolymers by utilizing an unbridged, substituted or unsubstituted cyclopentadienyl metallocene catalyst that is capable of interconverting between states with different copolymerization characteristics, which interconversion is controlled by selecting the substituents of the cyclopentadienyl ligands so that the rate of interconversion of the two states is within several orders of magnitude of the rate of formation of a single polymer chain. Where r r the polymer can be characterized as multiblock; where r r , the result is a polymer blend and where r / r is close to 1, the resulting polymer is a mixture of blend and multiblock.
Multimodal Polymer Particles And Uses Thereof
US Patent:
6884844, Apr 26, 2005
Filed:
Dec 2, 2002
Appl. No.:
10/307754
Inventors:
Raymond Gerard Hamilton - Washington Crossing PA, US
Morris Christopher Wills - Philadelphia PA, US
Jennifer Lynn Petoff - Yardley PA, US
Joseph Robert Adamo - Souderton PA, US
Morris Christopher Wills - Philadelphia PA, US
Jennifer Lynn Petoff - Yardley PA, US
Joseph Robert Adamo - Souderton PA, US
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C08L051/04
US Classification:
525 71, 525 64, 525 69, 525316
Abstract:
A multimodal polymer particle composition containing two or more populations of polymer particles having a total rubbery weight fraction of less than 90 weight percent is provided. Also disclosed is a process for preparing multimodal polymer particle compositions that can be dried to a powder. Multimodal polymer particle dispersions are disclosed for preparing impact modifiers that can be dried to a powder. Also provided are polymeric compositions having a matrix resin component and impact modifiers prepared from multimodal polymer particles.
Processes For Preparing Multimodal Polymer Particle Compositions
US Patent:
6989410, Jan 24, 2006
Filed:
Dec 2, 2002
Appl. No.:
10/307650
Inventors:
Raymond Gerard Hamilton - Washington Crossing PA, US
Morris Christopher Wills - Philadelphia PA, US
Kirk Harold Moyer - Yardley PA, US
Jennifer Lynn Petoff - Yardley PA, US
Joseph Robert Adamo - Souderton PA, US
Morris Christopher Wills - Philadelphia PA, US
Kirk Harold Moyer - Yardley PA, US
Jennifer Lynn Petoff - Yardley PA, US
Joseph Robert Adamo - Souderton PA, US
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C08J 3/00
C08L 51/00
C08L 51/00
US Classification:
523340, 523342, 524321, 524504, 524804
Abstract:
A multimodal polymer particle composition containing two or more populations of polymer particles having a total rubbery weight fraction of less than 90 weight percent is provided. Also disclosed is a process for preparing multimodal polymer particle compositions that can be dried to a powder. Multimodal polymer particle dispersions are disclosed for preparing impact modifiers that can be dried to a powder. Also provided are polymeric compositions having a matrix resin component and impact modifiers prepared from multimodal polymer particles.
Catalytic Composition And Its Preparation And Use For Preparing Polymers From Ethylenically Unsaturated Monomers
US Patent:
7087687, Aug 8, 2006
Filed:
May 28, 2004
Appl. No.:
10/857330
Inventors:
Brian Leslie Goodall - Amber PA, US
Jennifer Lynn Petoff - Yardley PA, US
Han Shen - Lansdale PA, US
Jennifer Lynn Petoff - Yardley PA, US
Han Shen - Lansdale PA, US
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C08F 4/80
C08F 4/70
C08F 4/70
US Classification:
526117, 526113, 526171, 526172, 502113, 502162, 502167, 556 35, 556 37, 556110, 556136, 556137, 556138
Abstract:
A catalytic composition, including a cationic metal-pair complex, is disclosed, along with a method for its preparation. A method for the polymerization of ethylenically unsaturated monomers using the catalytic composition, and the addition polymers produced thereby are also disclosed.
Catalytic Composition And Its Preparation And Use For Preparing Polymers From Ethylenically Unsaturated Monomers
US Patent:
7172986, Feb 6, 2007
Filed:
May 27, 2005
Appl. No.:
11/139874
Inventors:
Brian Leslie Goodall - Ambler PA, US
Jennifer Lynn Petoff - Yardley PA, US
Han Shen - Lansdale PA, US
Jennifer Lynn Petoff - Yardley PA, US
Han Shen - Lansdale PA, US
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C07F 1/08
C07F 15/00
C07F 11/00
B01J 31/18
C08F 4/70
C07F 15/00
C07F 11/00
B01J 31/18
C08F 4/70
US Classification:
502103, 502162, 502167, 526113, 526117, 526171, 526172, 526319, 556 28
Abstract:
A catalytic composition, including a cationic metal-pair complex, is disclosed, along with a method for its preparation. A method for the polymerization of ethylenically unsaturated monomers using the catalytic composition, and the addition polymers produced thereby are also disclosed.
Catalytic Composition And Its Preparation And Use For Preparing Polymers From Ethylenically Unsaturated Monomers
US Patent:
7199074, Apr 3, 2007
Filed:
May 27, 2005
Appl. No.:
11/140287
Inventors:
Brian Leslie Goodall - Ambler PA, US
Jennifer Lynn Petoff - Yardley PA, US
Han Shen - Lansdale PA, US
Jennifer Lynn Petoff - Yardley PA, US
Han Shen - Lansdale PA, US
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C07F 15/00
C07F 11/00
B01J 31/22
C08F 4/70
C07F 11/00
B01J 31/22
C08F 4/70
US Classification:
502113, 502162, 502167, 526113, 526117, 526171, 526172, 526319, 556 28
Abstract:
A catalytic composition, including a cationic metal-pair complex, is disclosed, along with a method for its preparation. A method for the polymerization of ethylenically unsaturated monomers using the catalytic composition, and the addition polymers produced thereby are also disclosed.
Methods Of Production Of Ethylene Copolymers Having Narrow Composition Distributions And High Melting Temperatures
US Patent:
2002011, Aug 22, 2002
Filed:
Feb 15, 2002
Appl. No.:
10/077300
Inventors:
Robert Waymouth - Palo Alto CA, US
Jennifer Maciejewski Petoff - Belle Mead NJ, US
Raisa Kravchenko - Wilmington DE, US
Jennifer Maciejewski Petoff - Belle Mead NJ, US
Raisa Kravchenko - Wilmington DE, US
Assignee:
The Board of Trustees of the Leland Stanford Junior University
International Classification:
C08F004/44
US Classification:
526/160000, 526/943000, 526/348500, 526/348600, 502/152000
Abstract:
A copolymer of ethylene and at least one comonomer containing at least 4 carbon atoms is characterized by a polydispersity greater than 2, a broad melting point transition as measured by differential scanning calorimetry, and a narrow composition distribution. Ethylene/C copolymers also may show at least one peak melting point above the peak melting point of a random copolymer of the same monomer unit composition. These copolymers are made by contacting ethylene and a comonomer under polymerization conditions in the presence of a suitable fluxional catalyst system.
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