Patents Examined by T. Zalukaeva
  • Patent number: 5990214
    Abstract: The present invention relates to liquid compositions comprising mixtures of esters derived from a) diethylene glycol and triethylene glycol and b) benzoic or toluic acid. The freezing point of the ester mixture is below the freezing points of the constituent esters when the relative concentrations of the constituent esters are within specified limits. The invention also relates oils and lubricants containing the present liquid ester compositions as plasticizing additives.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: November 23, 1999
    Assignee: Velsicol Chemical Corporation
    Inventors: William David Arendt, Thomas Joseph Bohnert, Mark Stephen Holt