Patents Assigned to Groupe Lysac Inc.
  • Starch network as absorbent or superabsorbent materials and their preparation by extrusion
    Publication number: 20070179291
    Abstract: The present invention relates an absorbent material consisting of a molecular network of starch molecules, the starch molecules comprising an amylopectin content of at least 90% (w/w). The molecular network can either be comprised of self-entangled starches or cross-linked starches.
    Type: Application
    Filed: March 26, 2004
    Publication date: August 2, 2007
    Applicant: LE GROUPE LYSAC, INC.
    Inventors: Claude Thibodeau, David Bergern, Isabelle Bolduc, Claude Couture, Nicolas Nourry
  • Polysaccharide phyllosilicate absorbent or superabsorbent nanocomposite materials
    Publication number: 20050214541
    Abstract: The present invention relates to an absorbent or a superabsorbent nanocomposite material comprising a polysaccharide and a phyllosilicate. The polysaccharide component can be a biodegradable polysaccharide that is a self-entangled glass-like polysaccharide or a crosslinked polysaccharide. The phyllosilicate component can be an exfoliation or a semi-exfoliation clay.
    Type: Application
    Filed: September 29, 2004
    Publication date: September 29, 2005
    Applicant: Le Groupe Lysac Inc.
    Inventors: Mohammed Berrada, Stephane Chevigny, Claude Thibodeau
  • Glass-like polysaccharide useful as absorbent for liquids
    Patent number: 6713460
    Abstract: A particulate absorbent, for the absorption of liquids, comprising particles selected from the group consisting of particles of glass-like polysaccharides and of particles of glass-like polysaccharides occluding, in their internal structure, at least one surfactant, said particles: having a size of up to 620 &mgr;m; being at least 70% of a glass-like type structure; and being: 30 to 45% of a size comprised between 620 and 420 &mgr;m; 35 to 55% of a size comprised between 420 and 210 &mgr;m; and 5 to 25% of a size up to 210 &mgr;m. These particulate absorbent is non-hygroscopic, hypoallergenic and biodegradable and useful particularly in biodegradable diapers.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: March 30, 2004
    Assignee: Groupe Lysac Inc.
    Inventors: Serge Huppé, Marie-Elise Maheux, Stéphane Chevigny, Francois Quirion
  • Glass-like polysaccharide useful as absorbent for liquids
    Publication number: 20020156048
    Abstract: A particulate absorbent, for the absorption of liquids, comprising particles selected from the group consisting of particles of glass-like polysaccharides and of particles of glass-like polysaccharides occluding, in their internal structure, at least one surfactant, said particles:
    Type: Application
    Filed: April 3, 2002
    Publication date: October 24, 2002
    Applicant: Groupe Lysac Inc./Lysac Group Inc.
    Inventors: Serge Huppe, Marie-Elise Maheux, Stephane Chevigny, Francois Quirion
  • Glass-like polysaccharide useful as absorbent for liquids
    Patent number: 6444653
    Abstract: A particulate absorbent, for the absorption of liquids, comprising particles selected from the group consisting of particles of glass-like polysaccharides and of particles of glass-like polysaccharides occluding, In their internal structure, at least one surfactant, said particles: having a size of up to 620 &mgr;m; being at least 70% of a glass-like type structure; and being: 30 to 45% of a size comprised between 620 and 420 &mgr;m; 35 to 55% of a size comprised between 420 and 210 &mgr;m; and 5 to 25% of a size up to 210 &mgr;m. These particulate absorbent is non-hygroscopic, hypoallergenic and biodegradable and useful particularly in biodegradable diapers.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: September 3, 2002
    Assignee: Groupe Lysac Inc.
    Inventors: Serge Huppé, Marie-Elise Maheux, Stéphane Chevigny, François Quirion