Patents by Inventor Ugo Romano

Ugo Romano 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 preparation of aromatic urethanes
    Patent number: 4163861
    Abstract: An aromatic urethane (e.g., methyl naphthyl urethane) is prepared by reacting an aromatic hydroxy compound, such as alpha-naphthol, with an aliphatic urethane, such as dimethyl urethane, in the presence of a catalyst consisting of a Lewis acid.
    Type: Grant
    Filed: November 15, 1977
    Date of Patent: August 7, 1979
    Assignee: Snamprogetti S.p.A.
    Inventors: Gabriello Illuminati, Ugo Romano
  • Method for preparing aromatic urethans
    Patent number: 4100351
    Abstract: In the preparation of aromatic urethans, a dialkyl carbonate is reacted with an N-acyl derivative of an amine: thus, for example, by reacting acetanilide with a lower dialkyl carbonate, such as DMC or DEC, in the presence of titanium tetraphenate (Lewis' acid), phenylmethyl urethan is obtained with a yield over 90%. No toxic reactants are used and the reaction has outstandingly high yields and conversion ratings. The urethane in question are useful as weed-killers and pesticides in agriculture.
    Type: Grant
    Filed: March 24, 1977
    Date of Patent: July 11, 1978
    Assignee: Anic, S.p.A.
    Inventors: Ugo Romano, Renato Tesei
  • Method for the preparation of aromatic urethans
    Patent number: 4097676
    Abstract: Aromatic urethans are prepared by reacting aromatic carbonates with aliphatic amines, within an organic solvent or not. It is preferred that a stoichiometric quantity of the amine be employed to prevent the formation of urea by-products which are likely to be formed if an excess of the amine is used. The temperature should not exceed 100.degree. C, the interval between 20.degree. and 40.degree. C being preferred. Nearly quantitative yields are obtained.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: June 27, 1978
    Assignee: Anic S.p.A.
    Inventor: Ugo Romano
  • Process for the preparation of dialkylcarbonates
    Patent number: 4062884
    Abstract: A process for the preparation of dialkylcarbonates by reacting an alcohol with a cyclic carbonate, wherein the reaction is carried out in the presence of an organic base, preferably a tertiary aliphatic amine, at a temperature of between 50.degree. and 150.degree. C and at a pressure of between 0.1 and 10 kg./sq.cm., the conversion of dialkylcarbonate being selective and avoiding the need of removing inorganic by-products.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: December 13, 1977
    Assignee: ANIC, S.p.A.
    Inventors: Ugo Romano, Ugo Melis
  • Process for the preparation of diphenylamine and derivatives thereof
    Patent number: 4046810
    Abstract: Diphenylamine, or the alkyl, phenyl, amino, alkoxy, hydroxy or halogen derivative thereof, is prepared through a continuous process wherein a stream of the corresponding imine (e.g. N-cyclohexylidene aniline) in the vapor phase and oxygen are fed to a reactor maintained at a temperature in the range from 300.degree. to 450.degree. C, at a rate providing a contact time between the reactants in the range of 0.1 to 20 seconds.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: September 6, 1977
    Assignee: SNAM Progetti S.p.A.
    Inventors: Pietro Antonio Moggi, Ugo Romano
  • Process for the preparation of aromatic carbonates
    Patent number: 4045464
    Abstract: The invention relates to a process for preparing diaryl carbonates starting from phenyl alkyl carbonates, the reaction being carried out in the presence of suitable catalysts capable of affording greater yields and selectivity; the catalyst system is selected amongst the Lewis acids or the compounds of transition metals.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: August 30, 1977
    Assignee: Anic, S.p.A.
    Inventors: Ugo Romano, Renato Tesei