Patents by Inventor Sergio Serdi

Sergio Serdi 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).

  • Zinc chloride adduct of benzyl-N,N-di-sec. butylthiolcarbamate and use thereof as catalyst for preparing benzyl-N,N-di-sec. butyl-thiolcarbamate from carbamoyl chloride and benzyl mercaptan
    Patent number: 4171321
    Abstract: An adduct of zinc chloride and benzyl-N,N-di-sec. butyl-thiolcarbamate, and use thereof as catalyst for preparing benzyl-N,N-di-sec.butyl-thiolcarbamate from carbamoyl chloride and benzyl mercaptan are disclosed.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: October 16, 1979
    Assignee: Montedison S.p.A.
    Inventors: Mario Bornengo, Sergio Bacciarelli, Sergio Serdi
  • Continuous process for the preparation of N-monomethylamide of O,O-dimethyl-dithiophosphoryl acetic acid
    Patent number: 4083900
    Abstract: The N-monomethylamide of O,O-dimethyl-dithiophosphorylacetic acid is prepared continuously, in the form of essentially pure, beautiful colorless crystals, by reacting the methyl ester of O,O-dimethyldithiophosphoryl acetic acid with a 34% aqueous solution of methylamine (CH.sub.3 NH.sub.2) at a temperature between 0.degree. C and 10.degree. C, in water containing a surfactant which is an alkyl sulphonate or an alkylarylsulphonate and, as an essential feature of the process, recycling, back to the reaction vessel, from 1/10 to 1/20 of the slurry obtained as a result of the reaction between the methyl ester of O,O-dimethyl-dithiophosphorylacetic acid and the 34% solution of CH.sub.3 NH.sub.2.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: April 11, 1978
    Assignee: Montedison S.p.A.
    Inventors: Mario Bornengo, Saverio Grego, Sergio Serdi