Patents by Inventor Nicholas John Hazel
Nicholas John Hazel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11046633Abstract: A process for the production of methyl acetate by carbonylating at a temperature of 250 to 350° C., in the presence of a zeolite catalyst, a feed comprising dimethyl ether, a gas comprising carbon monoxide and hydrogen at a molar ratio of hydrogen to carbon monoxide of at least 1, methyl acetate and one or more compounds containing a hydroxyl functional group.Type: GrantFiled: April 12, 2017Date of Patent: June 29, 2021Assignee: Ineos Acetyls UK LimitedInventors: Thomas Edward Clark, Nicholas John Hazel, John Glenn Sunley
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Publication number: 20200354303Abstract: A process for the production of methyl acetate by carbonylating at a temperature of 250 to 350° C., in the presence of a zeolite catalyst, a feed comprising dimethyl ether, a gas comprising carbon monoxide and hydrogen at a molar ratio of hydrogen to carbon monoxide of at least 1, methyl acetate and one or more compounds containing a hydroxyl functional group.Type: ApplicationFiled: April 12, 2017Publication date: November 12, 2020Applicant: BP Chemicals LimitedInventors: Thomas Edward CLARK, Nicholas John HAZEL, John Glenn SUNLEY
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Patent number: 10512902Abstract: A carbonylation process in the presence of a pretreated zeolite catalyst which comprises the sequential steps (i) pretreating the catalyst and (ii) carbonylating dimethyl ether with a carbon monoxide-containing gas to produce methyl acetate in which the catalyst pretreatment step (i) comprises a step (a) contacting the catalyst with a first treatment mixture comprising water vapour; and a step (b) contacting the treated catalyst of step (a) with a second treatment mixture comprising an inert gas and at least one of dimethyl ether and methanol.Type: GrantFiled: November 25, 2016Date of Patent: December 24, 2019Assignee: BP Chemicals LimitedInventors: Nicholas John Hazel, David John Law
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Publication number: 20180369794Abstract: A carbonylation process in the presence of a pretreated zeolite catalyst which comprises the sequential steps (i) pretreating the catalyst and (ii) carbonylating dimethyl ether with a carbon monoxide-containing gas to produce methyl acetate in which the catalyst pretreatment step (i) comprises a step (a) contacting the catalyst with a first treatment mixture comprising water vapour; and a step (b) contacting the treated catalyst of step (a) with a second treatment mixture comprising an inert gas and at least one of dimethyl ether and methanol.Type: ApplicationFiled: November 25, 2016Publication date: December 27, 2018Inventors: Nicholas John Hazel, David John Law
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Patent number: 9527063Abstract: Process for treating a zeolite catalyst for the carbonylation of dimethyl ether to produce methyl acetate, in which the catalyst is contacted with a treatment gas containing water vapor in an amount of at least 1 mol % and at a temperature below which dealumination of the zeolite structure occurs. The zeolite contains at least one channel which is defined by an 8-member ring and is mordenite.Type: GrantFiled: January 17, 2014Date of Patent: December 27, 2016Assignee: BP CHEMICALS LIMITEDInventors: Nicholas John Hazel, David Linke
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Patent number: 9505703Abstract: Process for the production of methyl acetate by carbonylating dimethyl ether with carbon monoxide in the presence of hydrogen and a zeolite catalyst. The process is carried out with a molar ratio of hydrogen to carbon monoxide of at least 1 and the catalyst has been calcined at a temperature of from about 375° C. to about 475° C.Type: GrantFiled: March 6, 2014Date of Patent: November 29, 2016Assignee: BP CHEMICALS LIMITEDInventors: Evert Jan Ditzel, Bogdan Costin Gagea, Nicholas John Hazel, John Glenn Sunley, Gordon John Haining
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Publication number: 20160052857Abstract: A process for the production of methyl acetate by carbonylating dimethyl ether with carbon monoxide in the presence of hydrogen and a zeolite catalyst wherein the process is carried out with a molar ratio of hydrogen to carbon monoxide of at least 1 and the catalyst has been calcined at a temperature of from about 375° C. to about 475° C.Type: ApplicationFiled: March 6, 2014Publication date: February 25, 2016Inventors: Evert Jan Ditzel, Bogdan Costin GAGEA, Nicholas John HAZEL, John Glenn SUNLEY, Gordon John HAINING
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Publication number: 20150360211Abstract: A process for treating a zeolite catalyst for the carbonylation of dimethyl ether to produce methyl acetate in which the catalyst is contacted with a treatment gas comprising water vapour in an amount of at least 1 mol % and at a temperature below which dealumination of the zeolite structure occurs.Type: ApplicationFiled: January 17, 2014Publication date: December 17, 2015Applicant: BP CHEMICALS LIMITEDInventors: Nicholas John Hazel, David LINKE
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Patent number: 8624054Abstract: A process for the production of methyl acetate by reacting dimethyl ether with carbon monoxide into a carbonylation reactor containing a mordenite catalyst in the presence of added methyl acetate and/or acetic acid.Type: GrantFiled: November 19, 2009Date of Patent: January 7, 2014Assignee: BP Chemicals LimitedInventors: Nicholas John Hazel, Lesley Ann Key, Mark Stephen Roberts, John Glenn Sunley
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Publication number: 20110319654Abstract: A process for the production of methyl acetate by reacting dimethyl ether with carbon monoxide into a carbonylation reactor containing a mordenite catalyst in the presence of added methyl acetate and/or acetic acid.Type: ApplicationFiled: November 19, 2009Publication date: December 29, 2011Inventors: Nicholas John Hazel, Lesley Ann Key, Mark Stephen Roberts, John Glenn Sunley
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Patent number: 6949671Abstract: Process for treating a mixed C4 stream comprising iso-butene and 1,3-butadiene by (a) reacting the stream with acetic acid in an addition reactor, (b) withdrawing product comprising iso-butene acetate, sec-butenyl acetate, n-butenyl acetate and t-butyl acetate, and recovering n-butenyl acetate from the product and separating and recycling t-butyl acetate to the addition reactor. The process provides increased efficiency of acetic acid utilisation together with useful products, e.g. n-butenyl and sec-butenyl acetates which can be separated and sold as such or converted to other products. The unreacted isobutene can be separated and used as such, or recycled and allowed to dimerise to di-isobutene, another useful product.Type: GrantFiled: August 28, 2002Date of Patent: September 27, 2005Assignee: The University of Southern Mississippi Research FoundationInventors: Benjamin Patrick Gracey, Nicholas John Hazel
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Publication number: 20040249192Abstract: Process for treating a mixed C4 stream comprising iso-butene and 1,3-butadiene by (a) reacting the stream with acetic acid in an addition reactor, (b) withdrawing product comprising iso-butene, sec-butenyl acetate, n-butenyl acetate and t-butyl acetate, and recovering n-butenyl acetate from the product and separating and recycling t-butyl acetate to the addition reactor. The process provides increased efficiency of acetic acid utilisation together with useful products, e.g. n-butenyl and sec-butenyl acetates which can be separated and sold as such or converted to other products. The unreacted isobutene can be separated and used as such, or recycled and allowed to dimerise to di-isobutene, another useful product.Type: ApplicationFiled: June 16, 2004Publication date: December 9, 2004Inventors: Benjamin Patrick Gracey, Nicholas John Hazel
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Patent number: 5763683Abstract: A novel 2-Methylbutoxy ethoxyethanol and a method for the preparation thereof. The use of the novel 2-Methylbutoxy ethoxyethanol as a solvent or a coalescing aid in aqueous formulations used as coatings and paints, a cleaning solvent for electronic components, a domestic and industrial hard surface cleaner, a component of oil well drilling muds, a fuel additive, and a solvent for liquid detergents.Type: GrantFiled: September 15, 1995Date of Patent: June 9, 1998Assignee: BP Chemicals LimitedInventors: Richard George Chapman, Nicholas John Hazel, Nevin John Stewart, Stephen Paul Goodwin, Andrew Richard Lucy
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Patent number: 5753738Abstract: This invention relates to aqueous resin formulations comprising as cosolvent an alkoxy ethoxyethanol which (i) has 4-8 carbon atoms in the alkoxy group, (ii) has a boiling point at atmospheric pressure within the range from 200.degree. to 350.degree. C. and (iii) in mixtures with n-heptane in the ratio of 30:70 by weight respectively has specific miscibility characteristics. The cosolvent acts either as a solvent or coalescing aid in aqueous formulations used as coatings and paints.Type: GrantFiled: December 22, 1995Date of Patent: May 19, 1998Assignee: BP Chemicals LimitedInventors: Richard George Chapman, Nicholas John Hazel, Nevin John Stewart, Stephen Paul Goodwin, Andrew Richard Lucy