Patents by Inventor Sven-Goran B. Andersson

Sven-Goran B. Andersson 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).

  • Method for dealkylation of alkyl-aryl ethers
    Patent number: 4695659
    Abstract: A method is disclosed for the dealkylation of alkylaryl ethers by reaction with aluminum triodide under reflux. The reaction is carried out in the presence of a catalytic amount of a quaternary ammonium iodide in a substantially non-aqueous organic solvent. The reaction product is then hydrolyzed with water. The quaternary ammonium iodide can be of the formula R.sub.4 N.sup.+ I.sup.-, wherein R is alkyl, and the solvent is preferably benzene or cyclohexane.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: September 22, 1987
    Assignee: Chemical Dynamics Development AB
    Inventor: Sven-Goran B. Andersson