Patents by Inventor Denis Melot

Denis Melot 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).

  • Films based on polyamides and on polyolefins
    Patent number: 6051649
    Abstract: The invention relates to films made of compositions comprising:at least one polyamide (A),at least one polymer (B) comprising polyamide blocks and polyether blocks,at least one polyolefin (C), andat least one functionalized polyolefin (D); such that the impact strength (Dart Test) is greater than that of a film containing the same proportions of (A), (C) and (D) but not containing (B).
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: April 18, 2000
    Assignee: Elf Atochem S.A.
    Inventors: Patrick Alex, Denis Melot
  • Mixtures of polymer having polyamide blocks and copolymers having vinylaromatic units and anhydride units
    Patent number: 5998545
    Abstract: The present invention relates to a mixture of polymers (A) having polyamide blocks and copolymers (B) comprising vinylaromatic units and unsaturated carboxylic anhydride units, the quantity of (B) being sufficient for the melt index (or melt flow index, MFI) of the mixture of (A) and (B) to be less than the melt index of (A) alone.It also relates to masterbatches of (A) and (B).
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: December 7, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Denis Melot, Alain Bouilloux, Benoit Ernst
  • Films based on polyamide and on polymers containing polyamide blocks and polyether blocks
    Patent number: 5936044
    Abstract: The invention relates to films based on PA-6 or PA-6,6 and on a copolymer containing polyamide (6 or 6,6) blocks and ploytetramethylene glycol blocks. They have greater impact strengths than PA-6 or PA-6, 6 film.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: August 10, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Denis Melot, Patrick Alex
  • Pressure-sensitive adhesive polymers
    Patent number: 5908908
    Abstract: This pressure-sensitive adhesive polymer is obtained by emulsion polymerization of the mixture of the following monomers, for a total of 100% by weight: (A) 40 to 95% by weight of at least one (meth)acrylic or vinyl monomer capable of resulting in a homopolymer which has a glass transition temperature lower than or equal to -40.degree. C.; (B) 2 to 50% by weight of at least one (meth)acrylic or vinyl monomer capable of resulting in a homopolymer which has a glass transition temperature higher than or equal to 0.degree. C.; (C) 0.5 to 6% by weight of at least one carboxylic (meth)acrylic monomer; (D) 0 to 5% by weight of at least one (meth)acrylic monomer ethoxylated with 1 to 20 moles of ethylene oxide; (E) 0.05 to 1% by weight of at least one (meth)acrylic or vinyl monomer containing a ureido group; and (F) 0 to 2% by weight of at least one acrylic or vinyl monomer carrying a sulphonate functional group, the said polymer having a glass transition temperature lower than or equal to -25.degree. C.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: June 1, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Didier Vanhoye, Denis Melot, Jean Lebez, Cyril Wiegert