1
Clarence S Freeman, Matthew Max Freeman, Jon Joseph Freeman: Polymerization process with spraying step. Darryl M Tyus Esq, Felsman Bradley Vaden Gunter & Dillon L, September 18, 2001: US06291605 (40 worldwide citation)

A process for producing a substantially dry polymer particle powder. A mixture of polymerization reagents is formed from a mixture of at least one monomer source and a solvent selected from the group consisting essentially of water and organic solvents and an initiator source. The mixture of polymer ...


2
Clarence D Chang, Jane C Cheng, Terry E Helton, Michael A Steckel, Scott A Stevenson: Hydroalkylation of aromatic hydrocarbons. ExxonMobil Oil Corporation, Linda A Kubena, Darryl M Tyus, May 4, 2004: US06730625 (37 worldwide citation)

There is described a process and a catalyst for the hydroalkylation of an aromatic hydrocarbon, particularly benzene, wherein the catalyst comprises a first metal having hydrogenation activity and a crystalline inorganic oxide material having a X-ray diffraction pattern including the following d-spa ...


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Krishna Kulai Rao, Russell D Sellen, Xiaobing Feng, James Spanswick, William F Huber Jr: Production, purification and polymerization of aromatic dicarboxylic acids. Exxon Mobil Chemical Patents, Darryl M Tyus, Linda A Kubena, November 4, 2003: US06642407 (26 worldwide citation)

This invention provides a process for purifying the crude aromatic dicarboxylic acids produced by oxidation of dialkyl aromatic hydrocarbons and for using the purified acids in the preparation of polyethylene terephthalate, polyethylene naphthalate and other polyesters. The invention simplifies the ...


5
Jane C Cheng, Jose G Santiesteban, Michael A Steckel, James C Vartuli: Production of monocycloalkyl aromatic compounds. ExxonMobil Oil Corporation, Darryl M Tyus, December 3, 2002: US06489529 (24 worldwide citation)

There is described a process for the transalkylation of a polycycloalkyl aromatic compound, particularly the transalkylation of dicyclohexylbenzene to produce monocyclohexylbenzene. The process comprises contacting the polycycloalkyl aromatic compound with benzene in the presence of a catalyst selec ...


6
Jane Chi Ya Cheng, Ajit B Dandekar, Michael Alan Steckel, Hye Kyung Cho Timken: Hydroalkylation of aromatic hydrocarbons. ExxonMobil Oil Corporation, Darryl M Tyus, January 14, 2003: US06506953 (20 worldwide citation)

There is described a process the hydroalkylation of an aromatic hydrocarbon, particularly benzene, to produce a cycloalkyl-substituted aromatic compound, particularly cyclohexylbenzene, comprising the step of contacting the aromatic hydrocarbon with hydrogen in the presence of a catalyst comprising ...


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Peijun Jiang, Armenag H Dekmezian, Kevin R Squire, Cesar A Garcia Franco: Thermoplastic elastomer polyolefin in-reactor blends and molded articles therefrom. ExxonMobil Chemical Patents, Darryl M Tyus, January 24, 2012: US08101685 (19 worldwide citation)

This invention relates to an in-reactor polymer blend comprising: (a) a first ethylene-containing polymer having a density of greater than 0.90 g/cm3 and a Mw of more than 20,000 g/mol and (b) a second ethylene-containing polymer having a density of less than 0.90 g/cm3, wherein the polymer blend ha ...


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Aspy K Mehta, Chia Cheng, Sudhin Datta, Wen Li, Chon Y Lin, Srivatsan S Iyer: Homogeneous polymer blend and articles therefrom. ExxonMobil Chemical Patents, Catherine L Bell, Darryl M Tyus, November 17, 2009: US07619038 (18 worldwide citation)

This invention relates to homogeneous blends of: 1) from 60 to 99 weight percent of one or more semi-crystalline polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-crystalline polymer comprising propylene and from 0 to 5 weight % alpha-olefin comonomer (b ...


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Ajit B Dandekar, Michael Hryniszak, David Lawrence Stern: Process for producing cumene. ExxonMobil Chemical Patents, Darryl M Tyus, Linda A Kubena, May 3, 2005: US06888037 (18 worldwide citation)

A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalyst have a surface to volume ratio o ...


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Wenyih Frank Lai, Robert Ellis Kay: Method of preparing a molecular sieve composition. ExxonMobil Chemical Patents, Darryl M Tyus, March 19, 2013: US08398955 (17 worldwide citation)

This disclosure provides a method of preparing a crystalline molecular sieve comprising: (a) providing a reaction mixture comprising at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at lea ...