Patents by Inventor Lawrence E. Tillotson

Lawrence E. Tillotson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sequential reaction of TBA and isobutylene with methanol
    Patent number: 5563301
    Abstract: Methyl tertiary butyl ether is sequentially prepared from tertiary butyl alcohol and methanol by:passing tertiary butyl alcohol and methanol through a primary reaction zone to form a primary etherification reaction product comprising unreacted methanol, unreacted tertiary butyl alcohol, water, dimethyl ether, isobutylene and methyl tertiary butyl ether;separating the primary etherification reaction product into a methanol recycle fraction, a tertiary butyl alcohol recycle fraction, an isobutylene fraction and a methyl tertiary butyl ether product fraction;recycling the methanol recycle fraction and the tertiary butyl alcohol recycle fraction to the methyl tertiary butyl ether etherification reaction zone;passing at least a portion of said isobutylene fraction together with added methanol through a secondary reaction zone to form a secondary etherification reaction product comprising water, methanol, isobutylene, DME, methyl tertiary butyl ether and tertiary butyl alcohol; andrecovering the methyl tertiary but
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: October 8, 1996
    Assignee: Texaco Development Corp.
    Inventors: Kyle L. Preston, Lawrence E. Tillotson, Rei-Yu J. Hwan