Patents by Inventor James LEELAND
James LEELAND 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: 11965062Abstract: The method of preparing the polycarbonate ether polyol or high molecular weight polyether carbonate using controlled addition of materials during polymerisation includes the steps of: mixing catalyst of formula(I), double metal cyanide (DMC) catalyst and optionally carbon dioxide and/or solvent with epoxide and optionally starter compound and/or carbon dioxide; or mixing DMC catalyst and optionally starter compound, carbon dioxide and/or solvent with epoxide and optionally carbon dioxide and/or solvent; or mixing epoxide, catalyst of formula(I), starter compound and carbon dioxide and optionally solvent; or mixing catalyst of formula (I), DMC catalyst and optionally starter compound, epoxide, carbon dioxide and/or solvent to form in each case a mixture (?); and adding one or more of starter compound, epoxide, carbon dioxide, catalyst of formula(I), DMC catalyst and/or solvent to mixture (?) to form mixture (?) comprising starter compound, epoxide, carbon dioxide, catalyst of formula(I), DMC catalyst and optioType: GrantFiled: October 24, 2018Date of Patent: April 23, 2024Assignee: Econic Technologies LTD.Inventors: Michael Kember, James Leeland, Rakibul Kabir, Emmalina Hollis
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Publication number: 20240002608Abstract: (Poly)ol block copolymers having a polycarbonate or polyether carbonate, polyester and polyether or ethercarbonate blocks of structure C—B-A?-Z?—Z—(Z?-A?-B—C)n wherein n=t?1 and wherein t=the number of terminal OH group residues on the block A; and wherein each A? is independently a polycarbonate chain having at least 70% carbonate linkages, or a polyethercarbonate chain having at least 30% ether linkages, wherein each B is a (poly)ester block formed by epoxide and cyclic anhydride reaction/copolymerisation and/or cyclic ester ring-opening reaction % polymerisation, and each C is independently a (poly)ethercarbonate or (poly)ether block having 50-100% ether linkages; and wherein Z?—Z—(Z?)n is a starter residue. Block B may have one of the following structures wherein n2 is 1 or more and n3/n4 is 1 or more, which extends to higher polymers such as polyurethanes produced from copolymers, compositions and processes of production of such polyols.Type: ApplicationFiled: November 4, 2021Publication date: January 4, 2024Inventors: Michael KEMBER, James LEELAND, Kerry RILEY
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Patent number: 11613606Abstract: A method for quenching a polymerisation process is described. The reaction of carbon dioxide with an epoxide in the presence of a bimetallic metal complex catalyst to produce a polymer comprises the quenching step of deactivation of the catalyst by contacting the catalyst with an acid effective to deactivate the catalyst. The deactivated catalyst may be removed from the polymer product by contacting the catalyst and polymer product with a solid phase and/or by precipitation; and the catalyst may also be optionally reactivated by contacting the deactivated catalyst with an anion. The acid may contain an anion effective to initiate the polymerisation process and effective to deactivate the catalyst and the molar ratio of acid to catalyst in the deactivation step may be less than or equal to 20:1 of the acid to catalyst mole ratio for the reaction.Type: GrantFiled: October 24, 2018Date of Patent: March 28, 2023Assignee: Econic Technologies LTDInventors: Michael Kember, David Muir, Anthony Chartoire, James Leeland, Fernando Valera, Andrew Carruthers, Rakibul Kabir
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Publication number: 20230033621Abstract: A (poly)ol block copolymer of general structure B-A-(B)n, wherein block A is a polycarbonate block or polyester block, n=t?1 and t=the number of reactive end residues on block A, wherein block B is a polyethercarbonate block and wherein >70% of the copolymer chain ends are terminated by primary hydroxyl groups, and a process of producing such copolymers and products incorporating such copolymers.Type: ApplicationFiled: March 2, 2021Publication date: February 2, 2023Inventors: James Leeland, Gemma Fereday-Trott, Michael Kember
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Publication number: 20220227925Abstract: A polyol block copolymer comprising a polycarbonate block, A (-A?-Z?—Z—(Z?-A?)n-), and polyethercarbonate blocks, B. The polyol block copolymer has the polyblock structure: B-A?-Z?—Z—(Z?-A?-B)n wherein n=t?1 and wherein t=the number of terminal OH group residues on the block A; and wherein each A? is independently a polycarbonate chain having at least 70% carbonate linkages, and wherein each B is independently a polyethercarbonate chain having 50-99% ether linkages and at least 1% carbonate linkages; and wherein Z?—Z—(Z?)n is a starter residue. A process of producing a polyol block copolymer from a two step process carried out in two reactors, and products and compositions incorporating such copolymers.Type: ApplicationFiled: May 1, 2020Publication date: July 21, 2022Inventors: James Leeland, Rakibul Kabir, Kerry Riley, Michael Kember
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Publication number: 20220227926Abstract: A process for producing a polyol block copolymer in a multiple reactor system including a first and second reactor in which a first reaction takes place in the first reactor and a second reaction takes place in the second reactor. The first reaction is the reaction of a carbonate catalyst with CO2 and epoxide, in the presence of starter and/or solvent to produce polycarbonate polyol copolymer and the second reaction is the reaction of DMC catalyst with the polycarbonate polyol compound of the first reaction and epoxide to produce polyol block copolymer. The product of the first reaction is fed into the second as crude reaction mixture, the epoxide and the polycarbonate polyol compound of the first reaction are fed in a continuous or semi-batch manner, and/or the product of the first reaction has neutral or alkaline pH on addition to the second. The invention further relates to the copolymers and products incorporating such copolymers.Type: ApplicationFiled: May 1, 2020Publication date: July 21, 2022Inventors: James Leeland, Rakibul Kabir, Kerry Riley, Michael Kember
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Publication number: 20220185956Abstract: A method for quenching a polymerisation process is described. The reaction of carbon dioxide with an epoxide in the presence of a bimetallic metal complex catalyst to produce a polymer comprises the quenching step of deactivation of the catalyst by contacting the catalyst with an acid effective to deactivate the catalyst. The deactivated catalyst may be removed from the polymer product by contacting the catalyst and polymer product with a solid phase and/or by precipitation; and the catalyst may also be optionally reactivated by contacting the deactivated catalyst with an anion. The acid may contain an anion effective to initiate the polymerisation process and effective to deactivate the catalyst and the molar ratio of acid to catalyst in the deactivation step may be less than or equal to 20:1 of the acid to catalyst mole ratio for the reaction.Type: ApplicationFiled: October 24, 2018Publication date: June 16, 2022Inventors: Michael Kember, David Muir, Anthony Chartoire, James Leeland, Fernando Valera, Andrew Carruthers, Rakibul Kabir
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Patent number: 11338245Abstract: An oxidation catalyst for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a first washcoat region comprising platinum (Pt), manganese (Mn) and a first support material; a second washcoat region comprising a platinum group metal (PGM) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region.Type: GrantFiled: May 13, 2019Date of Patent: May 24, 2022Assignee: Johnson Matthey Public Limited CompanyInventors: Andrew Francis Chiffey, John Benjamin Goodwin, James Leeland, Francois Moreau
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Patent number: 11167246Abstract: An oxidation catalyst for treating an exhaust gas from a diesel engine comprises: a first washcoat region for oxidising carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material, and wherein the first washcoat region does not comprise manganese or an oxide thereof; a second washcoat region for oxidising nitric oxide (NO), wherein the second washcoat region comprises platinum (Pt), manganese (Mn) and a second support material comprising a refractory metal oxide, which is silica-alumina or alumina doped with silica in a total amount of 0.Type: GrantFiled: August 22, 2018Date of Patent: November 9, 2021Assignee: Johnson Matthey Public Limited CompanyInventors: Andrew Francis Chiffey, John Benjamin Goodwin, James Leeland, Francois Moreau
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Patent number: 10821401Abstract: An exhaust system for a diesel engine comprises an oxidation catalyst for treating an exhaust gas from the diesel engine and an emissions control device, wherein the oxidation catalyst comprises: a first washcoat zone for oxidizing carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat zone comprises a first platinum group metal (PGM), which is a combination of platinum and palladium, a first support material and a hydrocarbon adsorbent material, which is a zeolite, and wherein the first washcoat zone does not comprise rhodium and is substantially free of manganese or an oxide thereof; a second washcoat zone for oxidizing nitric oxide (NO), wherein the second washcoat zone comprises platinum (Pt) and manganese (Mn) disposed or supported on a second support material, wherein the second support material comprises a refractory metal oxide, wherein the refractory metal oxide is silica-alumina or an alumina doped with silica in a total amount of 0.Type: GrantFiled: August 21, 2018Date of Patent: November 3, 2020Assignee: Johnson Matthey Public Limited CompanyInventors: Andrew Francis Chiffey, John Benjamin Goodwin, James Leeland, Francois Moreau
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Publication number: 20200339749Abstract: The method of preparing the polycarbonate ether polyol or high molecular weight polyether carbonate using controlled addition of materials during polymerisation includes the steps of: mixing catalyst of formula(I), double metal cyanide (DMC) catalyst and optionally carbon dioxide and/or solvent with epoxide and optionally starter compound and/or carbon dioxide; or mixing DMC catalyst and optionally starter compound, carbon dioxide and/or solvent with epoxide and optionally carbon dioxide and/or solvent; or mixing epoxide, catalyst of formula(I), starter compound and carbon dioxide and optionally solvent; or mixing catalyst of formula (I), DMC catalyst and optionally starter compound, epoxide, carbon dioxide and/or solvent to form in each case a mixture (?); and adding one or more of starter compound, epoxide, carbon dioxide, catalyst of formula(I), DMC catalyst and/or solvent to mixture (?) to form mixture (?) comprising starter compound, epoxide, carbon dioxide, catalyst of formula(I), DMC catalyst and oType: ApplicationFiled: October 24, 2018Publication date: October 29, 2020Inventors: Michael Kember, James Leeland, Rakibul KABIR, Emmalina Hollis
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Publication number: 20200140610Abstract: Polymerisation catalysts and systems comprising said catalysts for polymerising carbon dioxide and an epoxide, a lactide and/or lactone, and/or an epoxide and an anhydride. The catalyst is of formula (I): Wherein M1 and M2 are independently selected from Zn(II), Cr(II), Co(II), Cu(II), Mn(II), Ni(II), Mg(II), Fe(II), Ti(II), V(II), Cr(III)-X, Co(III)-X, Ni(III)-X, Mn(III)-X, Fe(III)-X, Ca(II), Ge(II), AI(III)-X, Ti(III)-X, V(III)-X, Ge(IV)-(X)2 or Ti(IV)-(X)2. R3A is different from R3B; and/or at least one occurrence of E3, E4, E5 and E6 is different to a remaining occurrence of E3, E4, E5 and E6. A ligand, a process of asymmetric N-substitution of a symmetrical ligand and a process for the reaction of: (i) carbon dioxide with an epoxide; (ii) an epoxide and an anhydride; and/or (iii) a lactide and/or a lactone, in the presence of a catalyst is also described.Type: ApplicationFiled: December 20, 2019Publication date: May 7, 2020Inventors: Andy Chapman, Anthony Chartoire, James Leeland, Michael Kember, Louis Adriaenssens
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Patent number: 10556988Abstract: The present invention relates to the field of polymerisation catalysts, and systems comprising said catalysts for polymerising carbon dioxide and an epoxide, a lactide and/or lactone, and/or an epoxide and an anhydride. The catalyst is of formula (I): Wherein M1 and M2 are independently selected from Zn(II), Cr(II), Co(II), Cu(II), Mn(II), Ni(II), Mg(II), Fe(II), Ti(II), V(II), Cr(III)-X, Co(III)-X, Ni(III)-X, Mn(III)-X, Fe(III)-X, Ca(II), Ge(II), Al(III)-X, Ti(III)-X, V(III)-X, Ge(IV)-(X)2 or Ti(IV)-(X)2. R3A is different from R3B; and/or at least one occurrence of E3, E4, E5 and E6 is different to a remaining occurrence of E3, E4, E5 and E6. A ligand, a process of asymmetric N-substitution of a symmetrical ligand and a process for the reaction of: (i) carbon dioxide with an epoxide; (ii) an epoxide and an anhydride; and/or (iii) a lactide and/or a lactone, in the presence of a catalyst is also described.Type: GrantFiled: July 22, 2015Date of Patent: February 11, 2020Assignee: ECONIC TECHNOLOGIES LTDInventors: Andy Chapman, Anthony Chartoire, James Leeland, Michael Kember, Louis Adriaenssens
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Publication number: 20190262772Abstract: An oxidation catalyst for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a first washcoat region comprising platinum (Pt), manganese (Mn) and a first support material; a second washcoat region comprising a platinum group metal (PGM) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region.Type: ApplicationFiled: May 13, 2019Publication date: August 29, 2019Inventors: Andrew Francis CHIFFEY, John Benjamin GOODWIN, James LEELAND, Francois MOREAU
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Patent number: 10286359Abstract: An oxidation catalyst for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a first washcoat region comprising platinum (Pt), manganese (Mn) and a first support material; a second washcoat region comprising a platinum group metal (PGM) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region.Type: GrantFiled: January 23, 2015Date of Patent: May 14, 2019Assignee: Johnson Matthey Public Limited CompanyInventors: Andrew Francis Chiffey, John Benjamin Goodwin, James Leeland, Francois Moreau
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Patent number: 10179325Abstract: An oxidation catalyst for treating an exhaust gas produced by a compression ignition engine comprising: a substrate; a catalytic material disposed on the substrate, wherein the catalytic material comprises platinum (Pt); and a region comprising a capture material, wherein the region is arranged to contact the exhaust gas after the exhaust gas has contacted and/or passed through the catalytic material.Type: GrantFiled: February 8, 2016Date of Patent: January 15, 2019Assignee: Johnson Matthey Public Limited CompanyInventors: Andrew Francis Chiffey, Christopher Daly, Daniel Hatcher, James Leeland, Francois Moreau, Paul Richard Phillips
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Publication number: 20180353903Abstract: An oxidation catalyst for treating an exhaust gas from a diesel engine comprises: a first washcoat region for oxidising carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material, and wherein the first washcoat region does not comprise manganese or an oxide thereof; a second washcoat region for oxidising nitric oxide (NO), wherein the second washcoat region comprises platinum (Pt), manganese (Mn) and a second support material comprising a refractory metal oxide, which is silica-alumina or alumina doped with silica in a total amount of 0.Type: ApplicationFiled: August 22, 2018Publication date: December 13, 2018Inventors: Andrew Francis CHIFFEY, John Benjamin GOODWIN, James LEELAND, Francois MOREAU
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Publication number: 20180353902Abstract: An exhaust system for a diesel engine comprises an oxidation catalyst for treating an exhaust gas from the diesel engine and an emissions control device, wherein the oxidation catalyst comprises: a first washcoat zone for oxidizing carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat zone comprises a first platinum group metal (PGM), which is a combination of platinum and palladium, a first support material and a hydrocarbon adsorbent material, which is a zeolite, and wherein the first washcoat zone does not comprise rhodium and is substantially free of manganese or an oxide thereof; a second washcoat zone for oxidizing nitric oxide (NO), wherein the second washcoat zone comprises platinum (Pt) and manganese (Mn) disposed or supported on a second support material, wherein the second support material comprises a refractory metal oxide, wherein the refractory metal oxide is silica-alumina or an alumina doped with silica in a total amount of 0.Type: ApplicationFiled: August 21, 2018Publication date: December 13, 2018Inventors: Andrew Francis CHIFFEY, John Benjamin GOODWIN, James LEELAND, Francois MOREAU
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Patent number: 10151227Abstract: A catalyst for storing nitrogen oxides (NOx) in an exhaust gas from a lean burn engine comprising a NOx storage material and a substrate, wherein the NOx storage material comprises a NOx storage component and an NO oxidation promoter on a support material, wherein the NO oxidation promoter is manganese or an oxide, hydroxide or carbonate thereof.Type: GrantFiled: July 8, 2016Date of Patent: December 11, 2018Assignee: Johnson Matthey Public Limited CompanyInventors: Andrew Armitage, Andrew Francis Chiffey, John Benjamin Goodwin, James Leeland, Nuria Lastra-Calvo, Francois Moreau, Paul Richard Phillips, Stuart David Reid, Daniel Swallow, David Xuereb
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Publication number: 20180065084Abstract: An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first washcoat region for oxidising carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region for oxidising nitric oxide (NO), wherein the second washcoat region comprises platinum (Pt), manganese (Mn) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region.Type: ApplicationFiled: November 8, 2017Publication date: March 8, 2018Inventors: Andrew Francis CHIFFEY, John Benjamin GOODWIN, James LEELAND, Francois MOREAU