Patents by Inventor Giuseppe Messina

Giuseppe Messina 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).

  • Patent number: 4769497
    Abstract: A new method of synthesis of a 2,2-dialkoxy-propane e.g. 2,2-dimethoxy-propane, is described through reaction of a cyclic ketal, e.g. 2,2-dimethyl-(1,3)-dioxolane, with a boric acid alkyl ester, e.g. boric acid trimethyl ester, in the presence of an acidic catalyst. The reaction may be carried out either in liquid or in vapor phase. In the latter case, heating of the thus obtained intermediate mixture to the reflux temperature should follow the catalytic step.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: September 6, 1988
    Assignee: Enichem Anic S.p.A.
    Inventors: Giuseppe Messina, Mario D. Moretti, Gavino Sanna, Salvatore R. Sanna, Giovanni Soma
  • Patent number: 4439570
    Abstract: Substantially colorless, liquid compositions are described which are constituted by a phenolic antioxidant, or mixture of phenolic antioxidants, and at least one phosphine, the compositions being highly resistant to coloration phenomena.These compositions are effective stabilizers for organic polymers and, when incorporated in the said polymers, have a stabilizing power which is greater than that shown by the phenolic antioxidant or mixture of phenolic antioxidants alone.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: March 27, 1984
    Assignee: Euteco Impianti S.p.A.
    Inventors: Giuseppe Messina, Loreno Lorenzoni, Antonio L. Fadda
  • Patent number: 4374280
    Abstract: A process for the preparation of dicumyl peroxide by reaction of dimethylbenzyl hydroperoxide (cumene hydroperoxide) with dimethyl phenyl carbinol in the presence of a catalytic quantity of a phosphorous halide or oxyhalide is described. This catalyst gives good yields of the useful reaction product and a high selectivity.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: February 15, 1983
    Assignee: Euteco Impianti S.p.A.
    Inventors: Giuseppe Messina, Mario D. Moretti, Loreno Lorenzoni
  • Patent number: 4374279
    Abstract: A process for the preparation of dicumyl peroxide by reaction of dimethylbenzyl hydroperoxide (cumene hydroperoxide) with methyl cumyl ether is described. The reaction is carried out in the presence of a catalytic quantity of Lewis or Bronsted acids, the methanol which forms as a by-product being removed as the reaction proceeds. Furthermore, the reaction is carried out in a reaction medium consisting of the methyl cumyl ether itself, which is employed in quantities greater than the stoichiometric quantity required for the reaction with the cumene hydroperoxide.
    Type: Grant
    Filed: November 27, 1981
    Date of Patent: February 15, 1983
    Assignee: Euteco Impianti S.p.A.
    Inventors: Giuseppe Messina, Mario D. Moretti, Loreno Lorenzoni
  • Patent number: 4216345
    Abstract: Process for the preparation of alkylbenzenes by partial chlorination of linear C.sub.9 -C.sub.15 paraffins, catalytic alkylation of benzene with the resulting mixture and fractionation by distillation of the alkylation products.At least a part of the unreacted paraffins recovered by fractionation and to be recycled to the chlorination stage is submitted, continuously or intermittently, to a purification treatment with molecular sieves.The content in undesired by-products of the alkylbenzenes can thus be maintained at negligibly low values.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: August 5, 1980
    Assignee: Euteco S.p.A.
    Inventors: Giuseppe Messina, Loreno Lorenzoni, Lucio Di Fiore
  • Patent number: 4017584
    Abstract: Aluminum trichloride is separated and recovered from its complexes with hydrocarbons and hydrogen chloride by contacting the complexes with metallic aluminum at 20.degree.-100.degree. C and recovering the resulting precipitate of aluminum trichloride.
    Type: Grant
    Filed: May 6, 1975
    Date of Patent: April 12, 1977
    Assignee: Societa' Italiana Resine S.I.R.. S.p.A.
    Inventors: Giuseppe Messina, George Andrew Olah, Riccardo Moraglia
  • Patent number: 3993587
    Abstract: Supported superacid catalysts active in the alkylation of aromatic hydrocarbons are obtained by treating an alumina-containing support at a temperature of at least 400.degree. C and contacting the support at a temperature of at least 150.degree. C with a Lewis or Bronsted acid defined by one of the formulae: MX.sub.n, HMX.sub.n.sub.+1 and MOX.sub.m, wherein M stands for a metal belonging to Groups IIIA, IVB, VA, VB and VIB of the Periodic System of Elements, X is a halogen (with the exception of iodine), n is an integer from 3 to 6 and m is an integer from 1 to 4.
    Type: Grant
    Filed: November 19, 1974
    Date of Patent: November 23, 1976
    Assignee: Societa Italiana Resine S.I.R. S.p.A.
    Inventors: George A. Olah, Giuseppe Messina