Exxon Research and Engineering Company

Exxonmobil Chemical Patents Inc.

Exxon Chemical Patents, Inc.

Exxonmobil Research and Engineering Company

Robert P Reynolds

Sudhin Datta

Harry William Deckman

Frank Hershkowitz

Leonard Schoenman

Constantine P Gonatas

John W Fulton

Jack I Ito

Gabor Kiss

Michael Gerard Matturro

Patrick Brant

Richard Henry Schlosberg

Aspy Keki Mehta

Edmund John Mozeleski

Allen David Godwin

Steven Paul Rucker

Manika Varma-Nair

Russell J Koveal

Philippe Louis Buess

Raf Caers

Paul William Allen

Peijun Jiang

Francis Charles Rix

Allan J Jacobson

Rainer Kolb

John W Chu

James Alexander McHenry

Richard C Miller

Kirk Christian Nadler

Jack Wayne Johnson

Smita Kacker

LeRoy R Clavenna

James H Taylor, Jr

Thomas T Sun

Gary L Casty

Lavanga R Veluswamy

Robert C Portnoy

David B Dunaway

Leroy Russell Clavenna

Wen-Yih F Lai

Costas A Coulaloglou

Francis J Healy

Robert R Simpson

Murielle V Scott

Alfredo M Lopez

Qiyao Zhang

Michael G Matturo

Steven L Hegwood

Gary D Mohn

Gary Lee Casty

Stephen Lloyd Hegwood

Murielle N Valet

This invention relates to processes for producing an isotactic propylene homopolymer having more than 15 and less than 100 regio defects (sum of 2,1-erythro and 2,1-threo insertions and 3,1-isomerizations) per 10,000 propylene units; a weight-averaged molecular weight of 35000 g/mol or more; a peak melting temperature of greater than 149&#xb0; C.; an mmmm pentad fraction of 0.85 or more; a heat of fusion of 80 J/g or more; and a peak melting temperature minus peak crystallization temperature (Tmp&#x2212;Tcp) of less than or equal to (0.907 times Tmp) minus 99.64 (Tmp&#x2212;Tcp&#x3c;(0.907&#xd7;Tmp)&#x2212;99.64), as measured in &#xb0; C. on the homopolymer having 0 wt % nucleating agent.

Super-solution homogeneous propylene polymerization and polypropylenes made therefrom

This invention relates to an isotactic propylene homopolymer having:

Isotactic polypropylene produced from supercritical polymerization process

Process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally diluent or solvent, at a temperature above the cloud point temperature of the polymerization system and a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system, where the polymerization system comprises any comonomer present, any diluent or solvent present, the polymer product, where the olefins having three or more carbon atoms are present at 40 weigh % or more.

Polymer production at supercritical conditions

This invention relates to supported activators comprising the product of the combination of an ion-exchange layered silicate, an organoaluminum compound, and a heterocyclic compound, which may be substituted or unsubstituted. This invention further relates to catalyst systems comprising catalyst compounds and such activators, as well as processes to polymerize unsaturated monomers using the supported activators. For the purposes of this patent specification and the claims thereto, the term 'activator' is used interchangeably with the term 'co-catalyst', the term &#x201c;catalyst&#x201d; refers to a metal compound that when combined with an activator polymerizes olefins, and the term &#x201c;catalyst system&#x201d; refers to the combination of a catalyst and an activator with or without a support. The terms &#x201c;support&#x201d; or &#x201c;carrier&#x201d;, for purposes of this patent specification, are used interchangeably and are any ion-exchange layered silicates.

Supported activator

Esters of branched C,alcohols suitable as plasticizers are formed by esterification of a C,alcohol produced by the aldol condensation from propanal and a C,aldehyde and hydrogenation, the propanal optionally having been made from natural gas streams.

Organic compounds and processes for their manufacture

A novel injector/reactor apparatus and an efficient process for the partial oxidation of light hydrocarbon gases, such as methane, to convert such gases to useful synthesis gas for recovery and/or subsequent hydrocarbon synthesis. Sources of a light hydrocarbon gas, such as methane, and oxygen or an oxygen-containing gas are preheated and pressurized and injected through an injector means at high velocity into admixture with each other in the desired relative proportions, at a plurality of mixing nozzles which are open to the catalytic partial oxidation reaction zone and are uniformly-spaced over the face of the injector means, to form a reactant gaseous premix having a pressure drop equal to at least about 3% of the lowest upstream pressure of either of said gases. The gaseous premix is injected in a time period which is less than its autoignition time, preferably less than 9 milliseconds, at a velocity between about 25 to 1000 feet/second, into a catalytic partial oxidation zone so that the gaseous premix reacts in the presence of the fixed catalyst to reduce the amounts of CO,, H,O and heat produced by the partial oxidation reaction, to form a useful syngas which is cooled and recovered.

Distributed injection catalytic partial oxidation process and apparatus for producing synthesis gas

A novel fluidized bed syngas (FBSG) injector/reactor apparatus and an efficient process for the partial oxidation and steam reforming of light hydrocarbon gases such as methane, to convert such gases to useful synthesis gas containing CO and H.sub.2 for recovery and/or subsequent hydrocarbon synthesis. Sources of a light hydrocarbon gas, such as methane, and oxygen or an oxygen-containing gas are preheated and pressurized and injected through gas orifices of an injector at high velocity and comparable momentums into admixture with each other in the desired proportions, at a plurality of mixing chambers or recessed cups which are open to the fluidized bed reaction zone of a reaction chamber and are spaced over the face of the injector, to form a reactant gas premix having a pressure drop of at least 1% through the injector. The gaseous premix is injected in a time period which is less than its autoignition time, preferably less than 9 milliseconds, at a velocity between about 25 to 1000 feet/second, into a partial oxidation reaction zone comprising a fluid bed catalyst so that the gas mixture reacts in the catalyst bed, to reduce the amounts of CO.sub.2, H.sub.2 O and heat produced by the partial oxidation reaction to favor the desired stoichiometry. The formed syngas is cooled and recovered, such as use in further synthesis processing.

Face-mixing fluid bed process and apparatus for producing synthesis gas

A novel injector/reactor apparatus and an efficient process for the partial oxidation of light hydrocarbon gases, such as methane, to convert such gases to useful synthesis gas for subsequent hydrocarbon synthesis. Sources of a light hydrocarbon gas, such as methane, and oxygen or an oxygen-containing gas are preheated and pressurized and injected through an injector means at high velocity into admixture with each other in the desired proportions, preferably at comparable momentums, at a plurality of mixing nozzles which are open to the reaction zone of a reactor and are spaced over the face of the injector, to form a reactant gas premix having a pressure drop equal to at least 1% of the lowest upstream pressure of either of said gas streams. The gas premix is ejected in a time period which preferably is less than 9 milliseconds, at a velocity between about 25 to 1000 feet/second, into a reaction zone comprising a partial oxidation zone, so that the gas mixture reacts therein. The partially-oxidized effluent is then passed into a steam reforming catalyst zone to reduce the amounts of CO.sub.2, H.sub.2 O and heat produced by the partial oxidation reaction to form the useful syngas, which is cooled, recovered and/or further processed.

Multi-injector autothermal reforming process and apparatus for producing

A novel injector/reactor apparatus and an efficient process for the partial oxidation of light hydrocarbon gases, such as methane, to convert such gases to useful synthesis gas for recovery and/or subsequent hydrocarbon synthesis. Sources comprising a light hydrocarbon gas, such as methane, and oxygen or an oxygen-containing gas, preheated and pressurized, are injected through an injector means at high velocity into admixture with each other in the desired relative proportions, at a plurality of mixing nozzles which are open to the partial oxidation zone of a reactor and are uniformly-spaced over the face of the injector means, to form a reactant gaseous premix having a pressure at least 3% lower than the lowest upstream pressure of either of the streams of the individual gases. The gaseous premix is injected in a time period which is less than its autoignition time, preferably less than 9 milliseconds, at a velocity between about 25 to 1000 feet/second, into the partial oxidation zone of the reactor. The gas mixture reacts before or simultaneously with the autoignition time delay of the mixture, to reduce the amounts of CO.sub.2, H.sub.2 O and heat produced by the partial oxidation reaction to form a useful syngas which is cooled and recovered.

Distributed injection process and apparatus for producing synthesis gas

A novel injector/reactor apparatus and an efficient process for the partial oxidation of light hydrocarbon gases, such as methane, to convert such gases to useful synthesis gas for recovery and/or subsequent hydrocarbon synthesis. Sources of a light hydrocarbon gas, such as methane, and oxygen or an oxygen-containing gas are preheated and pressurized and injected through an injector means at high velocity into admixture with each other in the desired relating proportions, at a plurality of mixing nozzles which are open to the partial oxidation zone of a reactor and are uniformly-spaced over the face of the injector means, to form a gaseous premix having a pressure drop through the injector. The gaseous premix is injected in a time period which is less than 5 milliseconds, preferably at a velocity between about 25 to 1000 feet/second, into a partial oxidation reaction zone so that the gaseous premix reacts therein, to reduce the amounts of CO.sub.2, H.sub.2 O and heat produced by the partial oxidation reaction and form, cool and recover a useful syngas.

Rapid injection process and apparatus for producing synthesis gas (law

A novel injector/reactor apparatus and an efficient process for the partial oxidation of light hydrocarbon gases, such as methane, to convert such gases to useful synthesis gas for recovery and/or subsequent hydrocarbon synthesis. Sources of a light hydrocarbon gas, such as methane, and oxygen or an oxygen-containing gas are preheated and pressurized and injected through an injector means at high velocity into admixture with each other in the desired proportions, at a plurality of mixing nozzles which are open to the catalytic partial oxidation reaction zone of a reactor and are uniformly-spaced over the face of the injector, to form a reactant gaseous premix having a pressure drop through the injector. The gaseous premix is injected in a time period which is less than 5 milliseconds, at a velocity between about 25 to 1000 feet/second, into a reaction zone comprising a catalytic partial oxidation zone so that the gaseous premix reacts in the presence of the fixed catalyst arrangement to reduce the amounts of CO.sub.2, H.sub.2 O and heat produced by the partial oxidation reaction and form, cool and recover a useful syngas.

Rapid injection catalytic partial oxidation process and apparatus for

The present invention is a multilayered catalyst structure coated onto the surface of a membrane which does not have physical micropores. The non-microporous membrane serves as a mechanical support for the thin multilayered catalyst structure and also can be used to control the rate at which some reactants arrive at (or some products leave from) the multilayered catalyst structure. A multilayered catalyst structure is coated on the non-microporous membrane which is composed of at least a catalyst layer and a separate transport layer.

Multilayered catalyst for controlled transport of reactant

Accordingly, there is provided a catalytic membrane comprising a porous substrate having a first surface and a second surface. The substrate has micropores, for example, pores ranging from about 10 .ANG. to about 2000 .ANG. in diameter, at least in a region extending from the first surface toward the second surface for a preselected distance. Preferably, the preselected distance will be sufficient to provide a measurable resistance to the flow of a fluid, such as a gas, through the micropores. A catalyst is deposited at least on the first surface of the substrate, although optionally, the catalyst is deposited on the substrate in the micorpore region. A transport layer is provided on the first surface of the substrate, including any catalyst on the first surface.

Modular surface catalyzed membrane containing a microporous membrane

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Clinton, NJ, United States of America

Robert P Reynolds