Patents by Inventor Derek K. MacAlpine

Derek K. MacAlpine 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).

  • Process for the production of an isobutenylcyclohexene
    Patent number: 4891461
    Abstract: An isobutenylcyclohexene (IBCH) is produced by reacting under disproportionation conditions an isoolefin with a vinylcyclohexene (VCH), or by reacting an isoolefin and a compound derivable from a VCH by homodisproportionation involving the elimination of ethylene, in the presence of a supported rhenium heptoxide disproportionation catalyst promoted with at least one transition metal in the form of the elemental metal and/or an oxide thereof, for example either copper or zinc.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: January 2, 1990
    Assignee: BP Chemicals Limited
    Inventors: David Lyons, Derek K. MacAlpine
  • Process for the production of 2,3-dimethylbutene-1 from propene
    Patent number: 4835328
    Abstract: 2,3-dimethylbutene-1 (2,3-DMB1) is produced from propene by a process comprising the steps of:(A) converting propene in one or more stages to a product comprising 2,3-dimethylbutene-2 (2,3-DMB-2) under conditions whereby the proportion of 2,3-DMB-2 in the product is maximised,(B) separating 2,3-DMB-2 from the product of step (A), and(C) contacting the 2,3-DMB-2 separated in step (B) with a catalyst active for the isomerisation of 2,3-DMB-2 to 2,3-DMB-1 under conditions whereby 2,3-DMB-2 is isomerised to 2,3-DMB-1.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: May 30, 1989
    Assignee: BP Chemicals Limited
    Inventors: Alexander G. Kent, Malcolm J. Lawrenson, Derek K. Macalpine
  • Process for the production of isobutylbenzene from an isobutenylcyclohexene
    Patent number: 4827070
    Abstract: An isobutylbenzene (IBB) is produced from an isobutenylcyclohexane (IBCH) by contacting at elevated temperature the IBCH in the presence of a molecular oxygen-containing gas with a catalyst comprising a supported transition metal in the form of the elemental metal and/or a compound thereof, for example palladium supported on alumina.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: May 2, 1989
    Assignee: BP Chemicals Limited
    Inventors: Alexander G. Kent, Derek K. MacAlpine
  • Process for the production of isobutylbenzenes
    Patent number: 4822937
    Abstract: A process for the production of isobutylbenzenes in particular, isobutylbenzene itself, is provided. The process is in two stages and comprises (1) reacting a vinylcyclohexane with an isoolefin of formula (R)(R.sup.1)C.dbd.C(CH.sub.3).sub.2 in the presence of a dismutation catalyst to produce an isobutenylcyclohexene and (2) contacting the isobutenylcyclohexene with a dehydroisomerisation catalyst to produce an isobutylbenzene. Examples of vinylcyclohexenes which can be used include 4-vinylcyclohexene and styrene.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: April 18, 1989
    Assignee: BP Chemicals Limited
    Inventors: Derek K. MacAlpine, Malcolm J. Lawrenson