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Process for the production of end-saturated polyalfaolefin lubricants

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  • Publication Date:
    November 22, 2022
  • Additional Information
    • Patent Number:
      11505,626
    • Appl. No:
      17/217493
    • Application Filed:
      March 30, 2021
    • Abstract:
      This invention relates to novel and improved catalyst and catalysts systems for the oligomerization of the higher olefins, which produce lubricants having improved properties, such as end-saturated oligomer chains which are needless to hydrogenation process, low kinematic viscosity and/or high viscosity index, low pour point, and high flash point lubricants.
    • Inventors:
      IRAN POLYMER AND PETROCHEMICAL INSTITUTE (Tehran, IR); UNIVERSITAT DE GIRONA (Girona, ES)
    • Assignees:
      IRAN POLYMER AND PETROCHEMICAL INSTITUTE (Tehran, IR), UNIVERSITAT DE GIRONA (Girona, ES)
    • Claim:
      1. A process to produce end-saturated PAOs comprising contacting at least one olefin with a catalyst system at oligomerization conditions to produce end-saturated PAOs; wherein the catalyst system comprises a) a compound, b) an activator, and c) a chain transfer agent with formula ZnR 2 , wherein R is selected from ethyl and methyl; wherein that compound is of formula (I): [chemical expression included] wherein X 1 and X 2 are independently selected from a C 1 to C 20 hydrocarbyl radical and halogen, or X 1 and X 2 join together to form a C 4 to C 12 cyclic or polycyclic ring structure, provided, R 1 , R 2 , R 4 , R 7 , R 9 , R 10 , R 11 , R 12 , R 13 , and R 14 are independently selected from a hydrogen and a C 1 to C 10 hydrocarbyl group; wherein R 3 , R 5 , R 6 , and R 8 are independently a C 1 to C 40 hydrocarbyl group; and wherein the activator is an alumoxane compound or tripropylammoniumtetrakis(perfluoronaphthyl)borate.
    • Claim:
      2. The process of claim 1 , wherein the oligomerization condition comprises a temperature of from about −25° C. to about 150° C., a pressure from about 0.1 MPa to about 20 MPa, and a time period from about 5 minutes to about 36 hours.
    • Claim:
      3. The process of claim 1 , wherein the oligomerization condition comprises one or more solvents selected from isobutane, butane, pentane, isopentane, hexanes, isohexane, heptane, octane, dodecane, and mixtures thereof; cyclic and alicyclic hydrocarbons, and aromatics.
    • Claim:
      4. The process of claim 1 , wherein the olefin is selected from 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene 1-dodecene, 1-tridecene, 1-tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1-nonadecene, 1-eicosene, 1-heneicosene, and 1-docosene.
    • Patent References Cited:
      2011/0178348 July 2011 Heilman
      2014/0039137 February 2014 Giesbrecht
      2015/0158958 June 2015 Harrington
      2020/0165362 May 2020 Bae
      2020/0207688 July 2020 Kim

    • Other References:
      Zhang et al., “Preparation, characterization and tribological properties of polyalphaolefin with magnetic reduced graphene oxide/Fe3O4”, Tribology International, Elsevier, vol. 141, 2020, 105952, 10 pages. cited by applicant
      Biresaw, “Biobased Polyalphaolefin Base Oil: Chemical, Physical, and Tribological Properties” Springer, Tribology Letters, vol. 66, Issue 76, 2018, 16 pages. cited by applicant
    • Primary Examiner:
      McAvoy, Ellen M
    • Attorney, Agent or Firm:
      Hayes Soloway PC
    • Accession Number:
      edspgr.11505626