Patents by Inventor Kevin Blann

Kevin Blann 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).

  • OLIGOMERISATION CATALYST WITH PENDANT DONOR GROUPS
    Publication number: 20090306442
    Abstract: This invention relates to a process for producing an oligomeric product by the oligomerisation of at least one olefinic compound in the form of an olefin or a compound including a carbon to carbon double bond, by contacting the at least one olefinic compound with an oligomerisation catalyst which includes the combination of a source of a transition metal, and a ligating compound of the formula (R1)mX1(Y)X2(R2)n.
    Type: Application
    Filed: May 28, 2007
    Publication date: December 10, 2009
    Applicant: SASOL TECHNOLOGY (PTY) LIMITED
    Inventors: Marié Pretorius, Annette Bollmann, Kevin Blann, Matthew James Overett
  • Trimerisation of olefins
    Patent number: 7525009
    Abstract: 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: Grant
    Filed: December 19, 2003
    Date of Patent: April 28, 2009
    Assignee: Sasol Technology (Pty) Limited
    Inventors: Kevin Blann, Annette Bollmann, John Thomas Dixon, Arno Neveling, David Hedley Morgan, Hulisani Maumela, Esna Killian, Fiona Millicent Hess, Stefanus Otto, Matthew James Overett
  • Tetramerization of olefins
    Patent number: 7511183
    Abstract: 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: Grant
    Filed: December 19, 2003
    Date of Patent: March 31, 2009
    Assignee: Sasol Technology (PTY) Limited
    Inventors: 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
  • Oligomerisation In The Presence Of Both A Tetramerisation Catalyst And A Further Oligomerisation Catalyst
    Publication number: 20080039600
    Abstract: This invention relates to a process for the oligomerisation of at least one olefinic compound in the form of an olefin or a compound including an olefinic moiety by contacting the at least one olefinic compound with at least two different catalysts, namely a tetramerisation catalyst and a further oligomerisation catalyst. The tetramerisation catalyst comprises a combination of a source of a transition metal; and a ligating compound of the formula (R1)mX1(Y)X2(R2)n.
    Type: Application
    Filed: June 13, 2005
    Publication date: February 14, 2008
    Inventors: Annette Bollmann, Hulisani Maumela, Kevin Blann
  • Tandem tetramerisation-polymerisation of olefins
    Patent number: 7323524
    Abstract: The invention provides a process for polymerising olefins to branched polyolefins in the presence of a polymerisation catalyst and a cocatalyst, wherein the cocatalyst produces 1-octene in a selectivity greater than 30%.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: January 29, 2008
    Assignee: Sasol Technology (PTY) Limited
    Inventors: Kevin Blann, Deon De Wet-Roos, John Thomas Dixon
  • Tetramerization of olefins
    Patent number: 7297832
    Abstract: 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: Grant
    Filed: December 19, 2003
    Date of Patent: November 20, 2007
    Assignee: Sasol Technology (PTY) Limited
    Inventors: 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
  • Polymerisation of olefinic compounds
    Patent number: 7285607
    Abstract: This invention relates to a process for producing a polymeric product by the polymerisation of at least one olefinic compound in the form of an olefin or a compound including an olefinic moiety by contacting the at least one olefinic compound with a polymerisation catalyst. The catalyst comprises the combination of a source of a Group IV to VI transition metal; and a ligating compound of the formula (R1)mX1(Y)X2(R2)n. The process is characterised therein that when R1 and R2 are independently a hydrocarbyl group or a heterohydrocarbyl group which contains at least one non-polar substituent, the olefinic compound is contacted with the polymerisation catalyst at a reaction temperature from and above 70° C.; and where R1 and R2 are independently a hydrocarbyl group or a heterohydrocarbyl group which contains no substituent, the olefinic compound is contacted with the polymerisation catalyst at a reaction temperature from and above 90° C.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: October 23, 2007
    Assignee: Sasol, Chemical Industries, Limited
    Inventors: Kevin Blann, Deon De Wet-Roos, Dawid Johannes Joubert, Esna Killian, John Thomas Dixon, Nonhlanhla Jillian Phelembe, Aletta Du Toit
  • Tetramerization of olefins
    Publication number: 20060229480
    Abstract: 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: Application
    Filed: December 19, 2003
    Publication date: October 12, 2006
    Inventors: Kevin Blann, Annette Bollmann, John Dixon, Arno Neveling, David Morgan, Hulisani Maumela, Esna Killian, Fiona Hess, Stefanus Otto, Lana Pepler, Hamdani Mahomed, Matthew Overett
  • Trimerisation of olefins
    Publication number: 20060211903
    Abstract: 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: Application
    Filed: December 19, 2003
    Publication date: September 21, 2006
    Inventors: Kevin Blann, Annette Bollmann, John Dixon, Arno Neveling, David Morgan, Hulisani Maumela, Esna Killian, Fiona Hess, Stefanus Otto, Matthew overett
  • Tetramerization of olefins
    Publication number: 20060173226
    Abstract: 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: Application
    Filed: December 19, 2003
    Publication date: August 3, 2006
    Inventors: Kevin Blann, Annette Bollmann, John Dixon, Arno Neveling, David Morgan, Hulisani Maumela, Esna Killian, Fiona Hess, Stefanus Otto, Matthew Overett, Michael Green
  • Tandem tetramerisation-polymerisation of olefins
    Publication number: 20060128910
    Abstract: The invention provides a process for polymerising olefins to branched polyolefins in the presence of a polymerisation catalyst and a cocatalyst, wherein the cocatalyst produces 1-octene in a selectivity greater than 30%.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 15, 2006
    Inventors: Kevin Blann, Deon De Wet-Roos, John Dixon
  • Polymerisation of olefinic compounds
    Publication number: 20060020091
    Abstract: This invention relates to a process for producing a polymeric product by the polymerisation of at least one olefinic compound in the form of an olefin or a compound including an olefinic moiety by contacting the at least one olefinic compound with a polymerisation catalyst. The catalyst comprises the combination of a source of a Group IV to VI transition metal; and a ligating compound of the formula (R1)mX1(Y)X2(R2)n. The process is characterised therein that when R1 and R2 are independently a hydrocarbyl group or a heterohydrocarbyl group which contains at least one non-polar substituent, the olefinic compound is contacted with the polymerisation catalyst at a reaction temperature from and above 70° C.; and where R1 and R2 are independently a hydrocarbyl group or a heterohydrocarbyl group which contains no substituent, the olefinic compound is contacted with the polymerisation catalyst at a reaction temperature from and above 90° C.
    Type: Application
    Filed: May 17, 2005
    Publication date: January 26, 2006
    Inventors: Kevin Blann, Deon De Wet-Roos, Dawid Joubert, Esna Killian, John Dixon, Nonhlanhla Phelembe, Aletta Toit