Patents by Inventor Adolfo Caporossi

Adolfo Caporossi 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 polymerization of vinyl chloride in suspension
    Patent number: 4695616
    Abstract: An improved process for the polymerization and copolymerization of vinyl chloride in suspension, characterized by using, together with the normal polymerization agents, a single suspending agent consisting of partially saponified polyvinyl acetate of medium degree of hydrolysis, prepared by the controlled alkaline alcoholysis of polyvinyl acetate in the presence of methyl acetate.
    Type: Grant
    Filed: February 11, 1985
    Date of Patent: September 22, 1987
    Assignee: Anic, S.p.A.
    Inventors: Adolfo Caporossi, Leonello Del Signore
  • Composition for lining the walls of reactors and connected apparatus used for polymerizing vinyl compounds which prevents or reduces deposits and incrustations on said apparatus, and the method for its use
    Patent number: 4456731
    Abstract: A composition for lining the walls of reactors and other connected apparatus in contact with reactant mixtures and reaction products during the polymerization of vinyl compounds, which reduces or prevents polymer deposits or incrustations on the said walls, constituted by the product of the prolonged reaction at 75.degree. C. between a polyvinyl alcohol of medium degree of hydrolysis prepared by the controlled alkaline alcoholysis of an ester of a wide molecular weight distribution polyvinyl alcohol and a polycarboxylic oxyacid, in a weight ratio of beween 35:10 and 40:10, which is applicable by known means, preferably by spraying.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: June 26, 1984
    Assignee: Anic S.p.A.
    Inventors: Adolfo Caporossi, Leonello Del Signore