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| Number | Title | Issue Date |
| 8153546 | Mixed metal oxide ammoxidation catalysts A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprising a complex of metal oxides... | 04/10/2012 |
| 8030248 | Drilling fluid and process of making the same This invention relates to drilling fluids and processes for making drilling fluids, such as for use in environmentally sensitive areas. The environmentally friendly drilling fluid includes a first fluid component having between about 5 weight percent to about 95 wei... | 10/04/2011 |
| 8013111 | Removal of catalyst and/or cocatalyst residues in a polyolefin manufacturing process The invention relates to an improved process for the manufacture of an olefin polymer composition in which corrosive trace cocatalyst and catalyst residues are removed from the hydrocarbon gas recycle stream prior to compression and re-use in the polymerization zone... | 09/06/2011 |
| 7919428 | Method of making mixed metal oxide catalysts for ammoxidation and/or oxidation of lower alkane hydrocarbons The present invention comprises a method for preparing a mixed oxide catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutene by ammoxidation in a gaseous phase via methods of heating or calcining precursor solid mixture to obtain m... | 04/05/2011 |
| 7754910 | Mixed metal oxide catalysts for the ammoxidation of propane and isobutane A process for the ammoxidation of a saturated or unsaturated or mixture of saturated and unsaturated hydrocarbon to produce an unsaturated nitrile, said process comprising contacting the saturated or unsaturated or mixture of saturated and unsaturated hydrocarbon wi... | 07/13/2010 |
| 7754657 | Method for removing asphaltene deposits Compositions comprising at least one C4-C30 olefin or oxidation product thereof and kerosene or an aromatic solvent are particularly effective for use in removing asphaltene and asphaltene-containing organic deposits and in preventing or reduci... | 07/13/2010 |
| 7674943 | Propylene polymer catalyst donor component A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins containing magnesium, titanium, and halogen further contains an internal electron donor comprising a compound containing electron donating substituents with a structure: | 03/09/2010 |
| 7629286 | Phosphorus addition process for improvement of catalysts suitable for maleic anhydride production A process is disclosed for the improvement of fluid bed vanadium phosphorus mixed oxide catalyst performance in the manufacture of maleic anhydride from butane, which process comprises impregnating the VPO catalyst powder with a phosphorus compound, such as an alkyl... | 12/08/2009 |
| 7576232 | In situ modification of molybdenum-based catalysts A process for the conversion of a hydrocarbon selected from the group consisting of propylene, isobutylene, propane, isobutane or mixtures thereof, to acrylonitrile, methacrylonitrile, or mixtures thereof, the process comprising the step of reacting in the vapor pha... | 08/18/2009 |
| 7531681 | Process for the ammoxidation of propane and isobutane A process for the ammoxidation of a saturated or unsaturated or mixture of saturated and unsaturated hydrocarbon to produce an unsaturated nitrile, said process comprising contacting the saturated or unsaturated or mixture of saturated and unsaturated hydrocarbon wi... | 05/12/2009 |
| 7491838 | Purification of acetonitrile by a distillative recovery/ion exchange resin treatment process A process of producing HPLC grade acetonitrile (UV cutoff | 02/17/2009 |
| 7491781 | Propylene polymer catalyst donor component A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins containing magnesium, titanium, and halogen further contains an internal electron donor comprising a compound containing electron donating substituents with a structure: | 02/17/2009 |
| 7442345 | Reactor apparatus A new reactor apparatus that can be used to carry out chemical reactions in a fluidized catalyst bed at high temperatures with reduced afterburning or other undesirable downstream side reactions. ... | 10/28/2008 |
| 7437891 | Recovery and purification of ethylene A process for the recovery and purification of ethylene and optionally propylene from a stream containing lighter and heavier components that employs an ethylene distributor column and a partially thermally coupled distributed distillation system. ... | 10/21/2008 |
| 7378476 | Olefin polymerization process in the presence of a radical generating system An olefin polymerization process comprises gas-phase polymerization of at least one olefin monomer in a reactor using a Ziegler-Natta or metallocene catalyst system in the presence of at least one suitable radical-generating compound in an amount sufficient for poly... | 05/27/2008 |
| 7348291 | Catalyst for the manufacture of acrylonitrile A catalyst comprising a complex of catalytic oxides comprising potassium, cesium, cerium, chromium, cobalt, nickel, iron, bismuth, molybdenum, wherein the relative ratios of these elements is represented by the following general formula AaK... | 03/25/2008 |
| 7326391 | Process for recovery and recycle of ammonia from a vapor stream A process for the recovery of unreacted ammonia from the effluent from a reaction zone used to produce acrylonitrile or methacrylonitrile comprising quenching the reactor effluent with an aqueous solution of ammonium phosphate in at least two stages, thereby capturi... | 02/05/2008 |
| 7319040 | Process control using on-line instrumentation and process models A method for providing improved estimates of properties of a chemical manufacturing process is disclosed. The method employs a process model that includes, or is modified by, scores or other gains obtained from the mathematical transformation of data obtained from a... | 01/15/2008 |
| 7316804 | Flow reactors for chemical conversions with heterogeneous catalysts Improved apparatus for use in process systems which include exothermic chemical conversions of organic compounds to value added products is disclosed, more particularly, flow reactors for exothermic chemical conversions using a fixed heterogeneous catalyst with mean... | 01/08/2008 |
| 7311813 | Distillation sequence for the purification and recovery of hydrocarbons This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, an... | 12/25/2007 |
| 7282600 | Method for inhibiting polymerization during the recovery and purification of unsaturated mononitriles Economical processes are disclosed for recovery and refining of valuable nitrogen-containing organic compounds formed by catalytic oxidation of least one feed compound selected from the group consisting of propane, propylene, isobutane and isobutylene in the presenc... | 10/16/2007 |
| 7250527 | Process for recovering acrylonitrile or methacrylonitrile A process for the recovery of acrylonitrile or methacrylonitrile from an aqueous solution comprising subjecting the said solution to a water extractive distillation by feeding the solution to a distillation column and performing said extractive distillation and usin... | 07/31/2007 |
| 7211674 | Process for the recovery of oxazole A process for the recovery of oxazole comprising contacting a mixture comprising oxazole and acetonitrile with an acid to form an acid salt of oxazole; separating acid salt of the oxazole from the mixture; and neutralizing the acid salt of oxazole separated from the... | 05/01/2007 |
