Charles Cozewith, Sudhin Datta, Weiguo Hu: Propylene ethylene polymers. ExxonMobile Chemical Patents, S D Prodnuk, February 25, 2003: US06525157 (225 worldwide citation)

Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular difference of tacticity. The copolyme ...

Eric J Markel: Preparation of vinyl-containing macromers. ExxonMobile Chemical Patents, William G Muller, Charles E Runyan, September 3, 2002: US06444773 (46 worldwide citation)

A composition of matter comprising vinyl ended copolymer chains having a number average molecular weight (M

Stavens Kevin B, Hagerty Robert O, Laird Randall B, Lin Zerong, Risch Michael A, Iaccino Larry L: Low fouling and high activity polymerization process. Exxonmobile Chemical Patents, Stavens Kevin B, Hagerty Robert O, Laird Randall B, Lin Zerong, Risch Michael A, Iaccino Larry L, BELL Catherine L, January 26, 2006: WO/2006/009949 (21 worldwide citation)

This invention is directed to a polymerization process that is carried out at relatively high productivity levels and with relatively low fouling. The process includes mixing together a catalyst system, at least one monomer and a hydrofluorocarbon to produce the polymer. The reaction is carried out ...

Paul K Ladwig, John E Asplin, Gordon F Stuntz, William A Wachter, Brian Erik Henry, Shun C Fung, Tan Jen Chen, Jay F Carpency, Ronald G Searle: Process for selectively producing C3 olefins in a fluid catalytic cracking process. ExxonMobile Chemical Patents, November 6, 2001: US06313366 (12 worldwide citation)

A process for producing propylene from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reac ...

Brant Patrick, Crowther Donna J: Functionalized high vinyl terminated propylene based oligomers. Exxonmobile Chemical Patents, Brant Patrick, Crowther Donna J, Bell Catherine L, December 23, 2009: WO/2009/155472 (6 worldwide citation)

This invention relates to a functionalized co-oligomer having an Mn of 300 to 30,000 g/mol comprising 10 to 90 mol% propylene and 10 to 90 mol% of ethylene, wherein the oligomer has at least X% allyl chain ends, where: 1) X = (-0.94 (mol% ethylene incorporated) + 100), when 10 to 60 mol% ethylene is ...

James Harding Beech Jr, Michael Peter Nicoletti, David Ritchie Lumgair Jr: Process for handling catalyst from an oxygenate to olefin reaction. ExxonMobile Chemical Patents, October 10, 2006: US07119241 (5 worldwide citation)

The present invention is a process for removing catalyst fines from an effluent stream in an oxygenate to olefin process. Specifically, the catalyst fines in the effluent stream are separated from the effluent stream. Then the carbonaceous deposits are removed from the catalyst fines by incineration ...

Garth Ronald Giesbrecht, Gregory A Solan, Christopher J Davies: Catalyst compounds are use thereof. ExxonMobile Chemical Patents, Catherine L Bell, August 3, 2010: US07767773 (5 worldwide citation)

This invention relates to a transition metal catalyst compound represented by the structure: wherein: each X is, independently, a hydride, a halogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl; w is 2; each R1, R2, R3, and R4 is, independently, a hydrogen, a ...

Michael C Clark, Vijay Nanda: Alkylaromatics production. ExxonMobile Chemical Patents, D M Tyus, January 19, 2010: US07649122 (4 worldwide citation)

A process for alkylation of an alkylatable aromatic compound to produce a monoalkylated aromatic compound, comprising the steps of (a) contacting at least one the alkylatable aromatic compound and at least one the alkylating agent with at least one molecular sieve catalyst under suitable alkylation ...

Weiqing Weng, Caiguo Gong, Anthony Jay Dias, Robert Norman Webb, James Peter Stokes: Split-stream process for making nanocomposites. ExxonMobile Chemical Patents, Xiaobing Feng, Catherine L Bell, March 10, 2009: US07501460 (4 worldwide citation)

The present invention is a process to produce a nanocomposite of a elastomer and organic clay, e.g. an exfoliated clay, suitable for use as an air barrier. The process can include the steps of: (a) contacting a solution (10) of butyl rubber in an organic solvent with a halogen (12) to form a halogen ...

Machteld Maria Mertens: Process for manufacture of silicoaluminophosphate molecular sieves. ExxonMobile Chemical Patents, December 2, 2008: US07459136 (4 worldwide citation)

A process for manufacturing a silicoaluminophosphate molecular sieve, the process comprising the steps of: (a) dissolving a silicon source into in a template at conditions sufficient to form a solution having a silicon concentration of at least 0.05 wt. %; (b) adding at least one aluminium source an ...