Patents by Inventor David Hedley Morgan
David Hedley Morgan 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: 9035119Abstract: This invention relates to the oligomerization of olefinic compounds in the presence of an activated oligomerization catalyst. The invention also extends to a particular manner for providing an activated oligomerization catalyst.Type: GrantFiled: February 15, 2010Date of Patent: May 19, 2015Assignee: Sasol Technology (PTY) LimitedInventors: Sean William Ewart, Brian William Stirling Kolthammer, David Matthew Smith, Martin John Hanton, John Thomas Dixon, David Hedley Morgan, Henriette De Bod, William Fullard Gabrielli, Stephen John Evans
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Patent number: 8461406Abstract: According to the present invention there is provided a process for producing an oligomeric product by the oligomerisation of at least one olefinic compound including: A) providing an activated oligomerisation catalyst comprising the combination of: i) a source of a transition metal; ii) a ligating compound of the formula (R1)mX1(Y)X2(R2)n iii) a metal containing activator; and (iv) at least one olefinic compound; B) diluting the activated oligomerisation catalyst of A with an introduced liquid medium; and C) contacting the at least one olefinic compound to be oligomerised with the diluted activated catalyst of B to produce an oligomeric product.Type: GrantFiled: July 10, 2006Date of Patent: June 11, 2013Assignee: Sasol Technology (PTY) LimitedInventors: Matthew James Overett, Kevin Blann, Esna Killian, David Hedley Morgan, Hulisani Maumela, Annette Bollmann, John Thomas Dixon
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Patent number: 8367786Abstract: This invention relates to the oligomerisation of olefinic compounds in the presence of an oligomerisation catalyst activated in two stages by two catalyst activators According to the invention there is provided a process for activating an oligomerisation catalyst by contacting the catalyst with i) a first activator component selected from the group consisting of the aluminoxanes and a mixture of at least one aluminoxane and at least one organylaluminium compound, and ii) a second activator component which is an organylaluminium compound, the process being characterised therein that the oligomerisation catalyst is first contacted with one of the first activator component or second activator component, and the resulting mixture is thereafter contacted with the other of the first activator component or second activator component.Type: GrantFiled: May 22, 2008Date of Patent: February 5, 2013Assignee: Sasol Technology (PTY) LimitedInventors: John Thomas Dixon, David Hedley Morgan, Hulisani Maumela, Palesa Nongodlwana, Johannes Alexander Willemse
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Publication number: 20120041241Abstract: This invention relates to the oligomerisation of olefinic compounds in the presence of an activated oligomerisation catalyst. The invention also extends to a particular manner for providing an activated oligomerisation catalyst.Type: ApplicationFiled: February 15, 2010Publication date: February 16, 2012Inventors: Sean William Ewart, Brian William Stiring Kolthammer, David Matthew Smith, Martin John Hanton, John Thomas Dixon, David Hedley Morgan, Henriette De Bod, William Fullard Gabrielli, Stephen John Evans
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Patent number: 7964763Abstract: This invention relates to a process for producing an oligomeric product by the oligomerization of at least one olefinic compound by contacting the at least one olefinic compound with an oligomerization catalyst in an aliphatic liquid medium at a reaction temperature of at least 50° C. The catalyst comprises the combination of a source of a transition metal; and a ligating compound of the formula (R1)m X1 (Y) X2 (R2)m.Type: GrantFiled: June 13, 2005Date of Patent: June 21, 2011Assignee: Sasol Technology (Pty) LimitedInventors: John Thomas Dixon, Esna Killian, Annette Bollmann, Richard Neil Walsh, Matthew James Overett, Kevin Blann, David Hedley Morgan
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Publication number: 20110086991Abstract: This invention relates to a process for producing an oligomeric product by the oligomerisation of at least one olefinic compound by contacting the at least one olefinic compound with an oligomerisation catalyst in an aliphatic liquid medium at a reaction temperature of at least 50° C. The catalyst comprises the combination of a source of a transition metal; and a ligating compound of the formula (R1)mX1(Y)X2(R2)n.Type: ApplicationFiled: June 13, 2005Publication date: April 14, 2011Inventors: John Thomas Dixon, Esna Killian, Annette Bollmann, Richard Neil Walsh, Matthew James Overett, Kevin Blann, David Hedley Morgan
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Publication number: 20100240847Abstract: This invention relates to the oligomerisation of olefinic compounds in the presence of an oligomerisation catalyst activated in two stages by two catalyst activators According to the invention there is provided a process for activating an oligomerisation catalyst by contacting the catalyst with i) a first activator component selected from the group consisting of the aluminoxanes and a mixture of at least one aluminoxane and at least one organylaluminium compound, and ii) a second activator component which is an organylaluminium compound, the process being characterised therein that the oligomerisation catalyst is first contacted with one of the first activator component or second activator component, and the resulting mixture is thereafter contacted with the other of the first activator component or second activator componentType: ApplicationFiled: May 22, 2008Publication date: September 23, 2010Inventors: John Thomas Dixon, David Hedley Morgan, Hulisani Maumela, Palesa Nongodlwana
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Publication number: 20100222622Abstract: According to the present invention there is provided a process for producing an oligomeric product by the oligomerisation of at least one olefinic compound including: A) providing an activated oligomerisation catalyst comprising the combination of: i) a source of a transition metal; ii) a ligating compound of the formula (R1)mX1(Y)X2(R2)n iii) a metal containing activator; and (iv) at least one olefinic compound; B) diluting the activated oligomerisation catalyst of A with an introduced liquid medium; and C) contacting the at least one olefinic compound to be oligomerised with the diluted activated catalyst of B to produce an oligomeric product.Type: ApplicationFiled: July 10, 2006Publication date: September 2, 2010Inventors: Matthew James Overett, Kevin Blann, Esna Killian, David Hedley Morgan, Hulisani Maumela, Annette Bollmann, John Thomas Dixon
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Patent number: 7554001Abstract: The invention provides a mixed heteroatomic ligand for an oligomerization of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is sulfur and at least two heteroatoms are not the same. The invention also provides a multidentate mixed heteroatomic ligand for an oligomerization of olefins catalyst, which ligand includes at least three heteroatoms of which at least one is a sulfur atom. The ligand may also contain, in addition to sulfur, at least one nitrogen or phosphorous heteroatom.Type: GrantFiled: October 16, 2007Date of Patent: June 30, 2009Assignee: Sasol Technology (Pty) Ltd.Inventors: John Thomas Dixon, Peter Wasserscheid, David Shane McGuinness, Fiona Millicent Hess, Hulisani Maumela, David Hedley Morgan, Annette Bollman
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Patent number: 7525009Abstract: The invention describes a process for trimerisation olefins, which process includes the step of contacting an olefinic feedstream with a catalyst system which includes a transition metal compound and a heteroatomic ligand and wherein the trimer is an olefin and wherein the heteroatomic ligand is described by the following general formula (R)nA-B-C(R)m.Type: GrantFiled: December 19, 2003Date of Patent: April 28, 2009Assignee: Sasol Technology (Pty) LimitedInventors: Kevin Blann, Annette Bollmann, John Thomas Dixon, Arno Neveling, David Hedley Morgan, Hulisani Maumela, Esna Killian, Fiona Millicent Hess, Stefanus Otto, Matthew James Overett
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Patent number: 7511183Abstract: The invention describes a process for tetramerisation of olefins wherein the product stream of the process contains more than 30% of the tetramer olefin. The process includes the step of contacting an olefinic feedstream with a catalyst system containing a transition metal compound and a heteroatomic ligand.Type: GrantFiled: December 19, 2003Date of Patent: March 31, 2009Assignee: Sasol Technology (PTY) LimitedInventors: Kevin Blann, Annette Bollmann, John Thomas Dixon, Arno Neveling, David Hedley Morgan, Hulisani Maumela, Esna Killian, Fiona Millicent Hess, Stefanus Otto, Lana Pepler, Hamdani Ahmed Mahomed, Matthew James Overett
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Publication number: 20080200744Abstract: The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is sulfur and at least two heteroatoms are not the same. The invention also provides a multidentate mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms of which at least one is a sulfur atom. The ligand may also contain, in addition to sulfur, at least one nitrogen or phosphorous heteroatom.Type: ApplicationFiled: October 16, 2007Publication date: August 21, 2008Applicant: Sasol Technology (PTY) LTD.Inventors: John Thomas Dixon, Peter Wasserscheid, David Shane McGuinness, Fiona Millicent Hess, Hulisani Maumela, David Hedley Morgan, Annette Bollman
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Patent number: 7361623Abstract: The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is nitrogen and at least two heteroatoms are not the same. The invention also provides a multidentate mixed heroatomic ligand for an oligomerization of olefins catalyst, which ligand includes at least three heteroatoms. At least one heteroatom may be nitrogen and at least 2 heteroatoms may not be the same.Type: GrantFiled: December 19, 2002Date of Patent: April 22, 2008Assignee: Sasol Technology (Pty) Ltd.Inventors: John Thomas Dixon, Jacobus Johannes Cronje Grove, Peter Wasserscheid, David Shane McGuinness, Fiona Millicent Hess, Hulisani Maumela, David Hedley Morgan, Annette Bollman
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Patent number: 7300904Abstract: The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is sulfur and at least 2 heteroatoms are not the same. The invention also provides a multidentate mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms of which at least one is a sulfur atom. The ligand may also contain, in addition to sulfur, at least one nitrogen or phosphorous heteroatom.Type: GrantFiled: December 19, 2002Date of Patent: November 27, 2007Assignee: Sasol Technology (Pty) Ltd.Inventors: John Thomas Dixon, Peter Wasserscheid, David Shane McGuinness, Fiona Millicent Hess, Hulisani Maumela, David Hedley Morgan, Annette Bollman
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Patent number: 7297832Abstract: The invention describes a process for tetramerisation of olefins wherein the product stream of the process contains more than 30% of the tetramer olefin. The process includes the step of contacting an olefinic feedstream with a catalyst system containing a transition metal compound and a heteroatomic ligand.Type: GrantFiled: December 19, 2003Date of Patent: November 20, 2007Assignee: Sasol Technology (PTY) LimitedInventors: Kevin Blann, Annette Bollmann, John Thomas Dixon, Arno Neveling, David Hedley Morgan, Hulisani Maumela, Esna Killian, Fiona Millicent Hess, Stefanus Otto, Matthew James Overett, Michael James Green
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Patent number: 6479722Abstract: A process for the production of dimers from an olefinic feedstock containing &agr;-olefins, by contacting the feedstock with a metallocene/aluminoxane catalyst, thereby selectively to dimerize &agr;-olefins in the feedstock by way of a metallocene-catalyzed dimerization reaction. The feedstock is in the form of a Fischer-Tropsch-derived definic feedstock involving a mixture of Fischer-Tropsch-derived hydrocarbons made up of at most 90% by mass of &agr;-olefins, at least 5% by mass of olefins, other than &agr;-olefins, selected from linear internal olefins, branched internal olefins, cyclic olefins, dienes, trienes and mixtures thereof, at least 5% by mass of constituents, other than olefins, selected from paraffins, oxygenated hydrocarbons, aromatic hydrocarbons and mixtures thereof. The metallocene-catalyzed dimerization reaction takes place while the olefins which are dimerized form part of the mixture constituted by the feedstock.Type: GrantFiled: November 1, 2000Date of Patent: November 12, 2002Assignee: Sasol Technology (Proprietary) LimitedInventors: Hester De Wet, David Hedley Morgan, Alta Ranwell