Patents Assigned to Vsesoiuznis Nauchij Issledovatelskj Institut Po Pererabotke Nefti Vniinp
  • Improved process for the production of an additive for lubricating oils and related product
    Patent number: 4212752
    Abstract: A detergent additive for lubricating oils is prepared by reacting an alkyenolsulfide with an oxide or hydroxide of a earth-alkali metal and carbonating the reaction product with carbon dioxide, the reaction being carried out in the presence of a promoter, selected in the class of the organic nitrogen compounds, and possibly of a co-promoter; the temperature and the time of the reaction are depending on whether the co-promoter is present. The resulting product shows improved detergency and flow-ability properties.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: July 15, 1980
    Assignees: Liquichimica Robassomero S.p.A., Vsesoiuznis Nauchij Issledovatelskj Institut Po Pererabotke Nefti Vniinp
    Inventors: Andrea Peditto, Franco Fossati, Vincenzo Petrillo, Paolo Peri, Ielena A. Ivanova, Aleksandr I. Levin, Aleksandr A. Fufaiev, Vicktor M. Shkolnikov