Phosphosulfurized Or Phosphooxidized Mixture Of Hydrocarbon And Organic Oxygen Compound Patents (Class 508/350)
  • Colloidal thio-phosphorous products derived from colloidal lime, their preparation and uses
    Patent number: 5985805
    Abstract: Novel colloidal calcium thio-phosphorous products are described which can be obtained by a process comprising adding at least one phosphorus sulphide to colloidal lime in the presence of solvent, then heating the mixture, with stirring, then eliminating the solvent. These products can be used as anti-wear and extreme pressure additives in lubricating oils.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: November 16, 1999
    Assignee: Institut Francais du Petrole
    Inventors: Bruno Delfort, Maurice Born, Agnes Chive