Patents by Inventor Luigi Raisa

Luigi Raisa 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).

  • Thermosetting liquid composition containing a polyepoxide and a tricarboxylic isocyanurate
    Patent number: 4942215
    Abstract: A thermosetting liquid moulding composition comprising:(a) a polyepoxide containing at least two epoxide groups per molecule;(b) a tricarboxylic acid definable by the general formula: ##STR1## where: R.sup.1, R.sup.2 and R.sup.3 have the meaning given in the description; and(c) a diacarboxylic acid anhydride.This composition can be transformed by liquid moulding into manufactured articles particularly useful in the electrical sector.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: July 17, 1990
    Assignee: Enichem Synthesis S.p.A.
    Inventors: Alberto Greco, Luigi Raisa
  • Process for separating linear-chain oxo-alcohols from mixtures of linear and branched-chain oxo-alcohols
    Patent number: 4670606
    Abstract: A mixture of linear and branched-chain detergent oxo-alcohols, containing from 11 to 16 carbon atoms in the molecule, is dissolved in a hydrocarbon or ether solvent, and the solution thus obtained is cooled to obtain a dispersion of a solid phase in a liquid phase.The solid phase constituting the linear-chain oxo-alcohol fraction is separated and recovered. The branched-chain oxo-alcohol fraction is separated and recovered from the liquid phase.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: June 2, 1987
    Assignee: Chimica Augusta, S.p.A.
    Inventors: Ugo Romano, Giacomo Sasselli, Luigi Raisa