Patents by Inventor Ismail L. Walele

Ismail L. Walele 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).

  • Process for the production of fatty acid esters of hydroxyalkyl sulfonate salts
    Patent number: 4515721
    Abstract: Fatty acid esters of hydroxyalkyl sulfonates are prepared by heating an excess of the fatty acids with the sulfonate until the water of condensation is removed. The hot crude ester is then quenched by immersion in an excess of cooled liquid, in which the ester product is soluble but in which unreacted, excess fatty acids are insoluble. The resulting slurry is filtered to separate the relatively pure ester from the quenching liquid containing dissolved free fatty acid. Isopropanol is the preferred quenching liquid.
    Type: Grant
    Filed: March 13, 1984
    Date of Patent: May 7, 1985
    Assignee: Jordan Chemical Company
    Inventors: Robert B. Login, Ismail L. Walele, Richard J. Otterson