Patents Assigned to Montecatini Tecnologie S.r.l.
  • Catalysts for the oxichlorination of ethylene, method for preparing them, and oxichlorination method using the same
    Patent number: 5905054
    Abstract: Catalysts for the oxichlorination of ethylene to 1,2-dichlorethane, comprising copper chloride as a main component, in the form of hollow cylindrical granules having at least three through holes, obtained by compression forming by using, for lubrication, a lubricant placed on the walls of the forming chamber and on the plungers of the mold.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: May 18, 1999
    Assignee: Montecatini Tecnologie S.r.l.
    Inventors: Luigi Cavalli, Carlo Rubini
  • Catalyst in granular form for 1,2-dichloroethane synthesis
    Patent number: 5861353
    Abstract: An ethylene oxychlorination catalyst in granular form, consisting of CuCl.sub.2 supported on an alumina carrier, displaying a cylindrical configuration with trilobed cross-section provided with three through-bores equidistant from each other, each of which through-bores has its axis parallel to the axis of the cylindrical granule.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: January 19, 1999
    Assignee: Montecatini Tecnologie S.r.l.
    Inventors: Augusto Viola, Massimo Brusa, Bernardo Merighi, Giuseppe Gubitosa, Luigi Cavalli, Michele Rossi
  • Ruthenium-based catalyst for producing lower polyhydric alcohols
    Patent number: 5403805
    Abstract: A ruthenium-based hydrogenation catalyst, particularly but not exclusively for hydrogenolysis under pressure of higher polyhydric alcohols, comprises ruthenium supported on granular activated carbon, and has:a specific surface area of from 600 to 1000 m.sup.2 /g;a total pore volume of from 0.5 to 1.2 cm.sup.3 /g;an apparent specific weight (bulk density) of from 0.45 to 0.55 g/cm.sup.3 ;an actual specific weight of from 1.9 to 2.3 g/cm.sup.3 ;a total volume of micropores having a radius smaller than 75 A of from 0.4 to 0.55 cm.sup.3 /g; andan ash content of from 2 to 5% by weight.The catalyst is used in a method for the continuous production of lower polyhydric alcohols in a fixed bed reactor, by means of hydrogenolysis under pressure of higher polyhydric alcohols.
    Type: Grant
    Filed: January 28, 1993
    Date of Patent: April 4, 1995
    Assignees: Montecatini Tecnologie S.r.l., Novamont S.p.A.
    Inventors: Giuseppe Gubitosa, Bruno Casale
  • Method for producing lower polyhydric alcohols by hydrogenolysis of higher polyhydric alcohols
    Patent number: 5354914
    Abstract: A metallic catalyst composition on an inert support, suitable in particular for hydrogenolysis reactions of higher polyhydric alcohols, which comprises the following relative to 100 parts of the catalyst:a) 0.5 to 5 weight % ruthenium;b) 1 to 10 weight % tin.The catalyst is used in particular for producing lower polyhydric alcohols such as ethanediol, propylene glycol, butanediol and glycerol, by means of hydrogenolysis reaction of higher polyhydric alcohols.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: October 11, 1994
    Assignees: Montecatini Tecnologie S.r.l., Novamont S.p.A.
    Inventors: Guiseppe Gubitosa, Bruno Casale