Patents by Inventor Vittorio E. Nova

Vittorio E. Nova 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 2,2-(4,4'-dihydroxydiphenyl)propane
    Patent number: 4169211
    Abstract: Process for the production of 2,2-(4,4'-dihydroxydiphenyl) propane comprising reacting phenol with acetone in a molar ratio of at least 2:1 but not exceeding 10:1 in the presence of an acidic agent at a temperature not exceeding 80.degree. C. to substantially complete reaction of the acetone, separating the acidic agent from the reaction product, bringing the product freed from acidic agent into contact with a material chosen from between activated carbon and active earths at a temperature in the range of from about 60.degree. to 120.degree. C. for a time in the range of from about 1 to 120 minutes and distilling the product obtained in the treatment with the active material to recover the 2,2-(4,4'-dihydroxydiphenyl-propane.
    Type: Grant
    Filed: July 13, 1977
    Date of Patent: September 25, 1979
    Assignee: Societa' Italiana Resine S.I.R. S.p.A.
    Inventors: Ferdinando Ligorati, Vittorio E. Nova, Giancarlo Aglietti