Patents Assigned to Norsolor S.A.
  • Process for purifying water using a polymer flocculating agent
    Patent number: 5093009
    Abstract: Process for the purifiying water using an effective proportion of a flocculating agent consisting of a reverse microlatex comprising a polymer of at least one water-soluble cationic vinyl monomer, which may be copolymerized with at least one water-soluble anionic or non-ionic vinyl monomer, possessing a molecular weight at least equal to 2.times.10.sup.6.The said microlatex is in the form of particles of a microlatex having a diameter of between 30 and 160 nm and its polydispersity index is between 1.05 and 1.2.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: March 3, 1992
    Assignee: Norsolor S.A.
    Inventors: Francoise Candau, Pascale Buchert, Marc Esch
  • Acrylic derivative of urea
    Patent number: 4999455
    Abstract: New acrylic derivative of urea: monomethylolacrylamidomethyleneurea.Preparation process, according to which acrylamidomethyleneurea is reacted with formaldehyde.Application to the manufacture of additives suitable for use in aminoplastic resins.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: March 12, 1991
    Assignee: Norsolor S.A.
    Inventors: Garrigue, Roger, Jack Lalo
  • Process for the manufacture of petroleum resins suitable for the manufacture of printing inks, varnishes and paints
    Patent number: 4983682
    Abstract: A process for the production of aromatic petroleum resins by the cationic copolymerization of a C.sub.6 -C.sub.12 aromatic cut and the product obtained by the thermal polymerization of a dicyclopentadiene cut, products produced by the process, and the application in the manufacture of printing inks, varnishes and paints.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: January 8, 1991
    Assignee: Norsolor S.A.
    Inventors: Paul Badie, Jean-Marie Siebert
  • Additives suitable for use in aminoplastic resins
    Patent number: 4977238
    Abstract: Precondensates of urea and formaldehyde containing monomethylolacrylamidomethyleneurea are produced from pure acrylamidomethyleneurea and urea/formaldehyde precondensate or from the starting substances used for the manufacture of acrylamidomethyleneurea with formaldehyde. They are useful additives for aminoplastic resins, which in turn may be used as glue in the manufacture of chipboard sheets.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: December 11, 1990
    Assignee: Norsolor S.A.
    Inventors: Roger Garrigue, Jack Lalo
  • Process for manufacturing urea/formaldehyde resins
    Patent number: 4977237
    Abstract: New process for manufacturing urea/formaldehyde resins.New process, according to which a urea/formaldehyde precondensate containing monomethylolacrylamidomethyleneurea is added to the urea/formaldehyde resins.Applications for the gluing of wood, in aminoplastic resins.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: December 11, 1990
    Assignee: Norsolor S.A.
    Inventors: Roger Garrigue, Jack Lalo
  • Process for curing aminoplast resins
    Patent number: 4957999
    Abstract: A process for curing aminoplast resins using a catalyst comprising a hexamethylenetetramine salt of a strong acid, resins produced according to the process, and the use of such resins in the manufacture of particle boards.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: September 18, 1990
    Assignee: Norsolor S.A.
    Inventors: Roger Garrigue, Jack Lalo, Andre Vignau