Patents by Inventor Pierre Scotte

Pierre Scotte 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 of making fast-breaking bituminous emulsions
    Patent number: 4338136
    Abstract: Fast-breaking bituminous emulsions are prepared by using a liquid emulsifying agent obtained by condensation at a temperature of 160.degree.-180.degree. C. of diethylenetriamine and a C.sub.12-18 fatty acid having an iodine value of at least 25, followed by at least partial cyclization of the condensation product at a temperature between approximately 190.degree. and 240.degree. C., the initial molar ratio between the diethylenetriamine and the fatty acid being at least 5 to 1, and the end product having a total amine index of at least 5.6 and optionally containing up to 10% free diethylenetriamine.
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: July 6, 1982
    Assignee: APC-Azote et Produits Chimiques, S.A.
    Inventors: Pierre Goullet, Pierre Scotte