Patents by Inventor Gian Fausto Buzzi

Gian Fausto Buzzi 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: 4025549
    Abstract: Methyl acrylate alone or in mixture with acrylic acid is prepared by passing a gaseous stream containing methanol, acrolein and oxygen at a velocity of 5 to 50 cm/sec through a fluidized catalytic bed formed of spherical particles 15 to 100 .mu. in size, said particles comprising from 10 to 80 wt.% silica support, the remainder consisting of an active catalytic component defined by one of the general formulae:Mo.sub.a V.sub.b Me.sub.c O.sub.xMo.sub.a W.sub.d Me.sub.c O.sub.yMo.sub.a V.sub.b W.sub.d Me.sub.c O.sub.zwherein Me is Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Au, Hg, Na, Ba, Ca, Ce, Bi, Th, U, Pb, Sb, Sn, P or B; and wherein a is a number from 6 to 12, b from 1 to 6, c from 0 to 5, d from 1 to 6, x from 20.5 to 58.5, y from 21 to 61.5 and z from 23.5 to 76.5.
    Type: Grant
    Filed: November 5, 1974
    Date of Patent: May 24, 1977
    Assignee: Societa' Italiana Resine S.I.R. S.p.A.
    Inventors: Natale Ferlazzo, Gian Fausto Buzzi, Marcello Ghirga, Benedetto Calcagno
  • Patent number: 4014925
    Abstract: Methyl acrylate or a mixture of methyl acrylate with acrylic acid are prepared by passing through a fluidized bed of catalyst a gaseous mixture comprising acrolein, methanol and oxygen fed at the bottom of the catalytic bed. A further amount of methanol is fed at one intermediate point at least, between the top and bottom of the catalytic bed. The catalyst is defined by one of the general formulae:Mo.sub.a V.sub.b Me.sub.c O.sub.xMo.sub.a W.sub.d Me.sub.c O.sub.yMo.sub.a V.sub.b W.sub.d Me.sub.c O.sub.zWherein Me is Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Au, Hg, Na, Ba, Ca, Ce, Bi, Th, U, Pb, Sb, Sn, P or B; and wherein a is a value from 6 to 12, b from 1 to 6, c from 0 to 5, d from 1 to 6, x from 20.5 to 58.5, y from 21 to 61.5 and z from 23.5 to 76.5.
    Type: Grant
    Filed: November 5, 1974
    Date of Patent: March 29, 1977
    Assignee: Societa' Italiana Resine S.I.R. S.p.A.
    Inventors: Natale Ferlazzo, Gian Fausto Buzzi, Marcello Ghirga, Benedetto Calcagno
  • Patent number: 3997600
    Abstract: Acrylic acid is prepared by contacting an oxidation catalyst with a gaseous mixture containing acrolein, oxygen and methanol. A proportion by volume from 0.05 to 0.5% methanol and a molar ratio of acrolein to methanol from 10:1 to 100:1 are maintained in the said mixture the catalyst is defined by one of the general formulae:Mo.sub.a V.sub.b Me.sub.c O.sub.xMo.sub.a W.sub.d Me.sub.c O.sub.yMo.sub.a V.sub.b W.sub.d Me.sub.c O.sub.zWherein Me is Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Au, Hg, Na, Ba, Ca, Ce, Bi, Th, U, Pb, Sn, Sb, P or B; and wherein a is a value from 6 to 12, b from 1 to 6, c from 0 to 5, d from 1 to 6, x from 20.5 to 58.5, y from 21 to 61.5 and z from 23.5 to 76.5. The reaction is carried out at a temperature not exceeding 320.degree. C.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: December 14, 1976
    Assignee: Societa' Italiana Resine S.I.R. S.p.A.
    Inventors: Natale Ferlazzo, Gian Fausto Buzzi, Marcello Ghirga
  • Patent number: 3956376
    Abstract: An improved process for the production of acrolein from propylene and of acrylic acid from propylene or acrolein or mixtures of propylene and acrolein which essentially comprises catalytic oxidation of propylene and/or acrolein with oxygen or a gas containing molecular oxygen in the presence of an oxidation catalyst and of methanol in a quantity of from 0.01 to 1% by volume with respect to the total gaseous mixture of the reactants. Acrolein and acrylic acid are formed in the process at high conversion rates and selectivities.
    Type: Grant
    Filed: November 29, 1973
    Date of Patent: May 11, 1976
    Assignee: Societa Italiana Resine S.p.A.
    Inventors: Natale Ferlazzo, Gian Fausto Buzzi, Marcello Ghirga
  • Patent number: 3933686
    Abstract: A catalyst suitable for the production ofAcrylonitrile from propylene or acrolein,Acrylic acid from propylene or acrolein, andAcrolein from propyleneComprising silver oxide and molybdenum oxide in a molar ratio of from about 0.1 to about 2.0.The catalytic reactions using this new catalyst are directed towards the desired end product by variation of the molar ratio of silver oxide to molybdenum oxide.
    Type: Grant
    Filed: November 29, 1973
    Date of Patent: January 20, 1976
    Assignee: Societa' Italiana Resine S.p.A.
    Inventors: Natale Ferlazzo, Gian Fausto Buzzi, Marcello Ghirga