Patents by Inventor Annette Bollmann

Annette Bollmann 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 of olefinic compounds in the presence of a diluted metal containing activator
    Patent number: 8461406
    Abstract: 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: Grant
    Filed: July 10, 2006
    Date of Patent: June 11, 2013
    Assignee: Sasol Technology (PTY) Limited
    Inventors: Matthew James Overett, Kevin Blann, Esna Killian, David Hedley Morgan, Hulisani Maumela, Annette Bollmann, John Thomas Dixon
  • Oligomerisation in the presence of both a tetramerisation catalyst and a further oligomerisation catalyst
    Patent number: 8076523
    Abstract: This invention relates to a process for the oligomerization of at least one olefinic compound in the form of an olefin or a compound including art olefinic moiety by contacting the at least one olefinic compound with at least two different catalysis, namely a tetramerization catalyst and a further oligomerization catalyst. The tetramerization catalyst comprises a combination of a source of a transition metal and a ligating compound of the formula (R1)mX1(Y)X2(R2)n. The invention also relates to an oligomerization catalyst comprising the combination of (i) source of transition metal for both a tetramerization catalyst and a trimerization catalyst; (ii) a ligating compound for a tetramerization catalyst: (iii) a different ligating compound for a trimerization catalyst: and (iv) optionally an activator.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: December 13, 2011
    Assignee: Sasol Technology (PTY) Limited
    Inventors: Annette Bollmann, Hulisani Maumela, Kevin Blann
  • Oligomerisation of olefinic compounds in an aliphatic medium
    Patent number: 7964763
    Abstract: 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: Grant
    Filed: June 13, 2005
    Date of Patent: June 21, 2011
    Assignee: Sasol Technology (Pty) Limited
    Inventors: John Thomas Dixon, Esna Killian, Annette Bollmann, Richard Neil Walsh, Matthew James Overett, Kevin Blann, David Hedley Morgan
  • Oligomerisation of olefinic compounds in an aliphatic medium
    Publication number: 20110086991
    Abstract: 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: Application
    Filed: June 13, 2005
    Publication date: April 14, 2011
    Inventors: John Thomas Dixon, Esna Killian, Annette Bollmann, Richard Neil Walsh, Matthew James Overett, Kevin Blann, David Hedley Morgan
  • Oligomerisation of Olefinic Compounds in the Presence of a Diluted Metal Containing Activator
    Publication number: 20100222622
    Abstract: 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: Application
    Filed: July 10, 2006
    Publication date: September 2, 2010
    Inventors: Matthew James Overett, Kevin Blann, Esna Killian, David Hedley Morgan, Hulisani Maumela, Annette Bollmann, John Thomas Dixon
  • 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
  • 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
  • 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