The Nitrogen Is Present In The Cation Of A Salt Patents (Class 516/166)
  • Patent number: 10633593
    Abstract: The present invention relates to an improved bitumen recovery process from oil sands. The oil sands may be surface mined and transported to a treatment area or may be treated directly by means of an in situ process of oil sand deposits that are located too deep for strip mining. Specifically, the present invention involves the step of treating oil sands with an ethylene oxide capped glycol ether described by the structure: RO—(CH2CH(CH3)O)m(C2H4O)nH wherein R is a linear, branched, cyclic alkyl, phenyl, or alkyl phenyl group of greater than 5 carbons and m and n are independently 1 to 3.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: April 28, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Cole A. Witham, Biplab Mukherjee