Patents by Inventor Lloyd M. Robeson

Lloyd M. Robeson 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).

  • Patent number: 4440890
    Abstract: Described herein is a flame retardant molding composition comprising a particular poly(aryl ketone) and a flame retardant additive which is a metal salt of an aromatic sulfonic acid.
    Type: Grant
    Filed: June 21, 1983
    Date of Patent: April 3, 1984
    Assignee: Union Carbide Corporation
    Inventor: Lloyd M. Robeson
  • Patent number: 4394469
    Abstract: An inorganic antimony compound that is surface modified with up to about 10 percent by weight of a polysiloxane results in a flame retardant with improved rheology, flow, storage and dispersing characteristics.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: July 19, 1983
    Assignee: Union Carbide Corporation
    Inventors: Julius J. Stratta, Lloyd M. Robeson, Richard V. Girardi
  • Patent number: 4380598
    Abstract: Described herein are flame retardant molding compositions comprising a blend of a polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid and a flame retardant additive which is a metal salt of an aromatic sulfonic acid. The composition may additionally contain one or more thermoplastic polymers.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: April 19, 1983
    Assignee: Union Carbide Corporation
    Inventors: Lloyd M. Robeson, Markus Matzner
  • Patent number: 4369136
    Abstract: Described herein are molding compositions comprising a blend of a poly(aryl ether), a polyester and a compatibilizing amount of an aromatic polycarbonate. These compositions are especially suited for molding articles useful in electrical applications.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: January 18, 1983
    Assignee: Union Carbide Corporation
    Inventors: Lloyd M. Robeson, William D. Claus, Jr., Harvey L. Batleman
  • Patent number: 4348500
    Abstract: Described herein are molding compositions comprising a blend of (a) a polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid, (b) a polyester derived from an aliphatic or cycloaliphatic diol and at least one aromatic dicarboxylic acid, (c) an epoxide and, optionally, at least one thermoplastic polymer. An article molded from these compositions has a good balance of mechanical properties and improved hydrolytic stability.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: September 7, 1982
    Assignee: Union Carbide Corporation
    Inventors: Lloyd M. Robeson, Ted T. Szabo
  • Patent number: 4337330
    Abstract: Described herein are blends of water soluble polyethers and poly(hydroxyether)s. These blends are miscible and exhibit controlled extractability and a controlled water dissolution rate.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: June 29, 1982
    Assignee: Union Carbide Corporation
    Inventor: Lloyd M. Robeson
  • Patent number: 4324869
    Abstract: Described herein are molding compositions comprising a blend of (a) a polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid and (b) an ethylene-alkyl acrylate copolymer and, optionally, at least one thermoplastic polymer. An article molded from these compositions has a good balance of mechanical properties and improved hydrolytic stability.
    Type: Grant
    Filed: November 18, 1980
    Date of Patent: April 13, 1982
    Assignee: Union Carbide Corporation
    Inventor: Lloyd M. Robeson
  • Patent number: 4293670
    Abstract: Described herein are molding compositions of blends of a poly(aryl ether) resin and a polyetherimide resin. These compositions have improved environmental stress crack resistance.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: October 6, 1981
    Assignee: Union Carbide Corporation
    Inventors: Lloyd M. Robeson, Markus Matzner, Louis M. Maresca
  • Patent number: 4286075
    Abstract: Described herein are molding compositions comprising a blend of (a) a polyarylate derived from a dihydric phenol and a mixture of isophthalic acid and terephthalic acid, of which more than about 65 mole percent is terephthalic acid, (b) a polyarylate derived from a dihydric phenol and a mixture of terephthalic acid and isophthalic acid, of which more than about 70 mole percent is isophthalic acid, and (c) at least one thermoplastic polymer compatible therewith. An article molded from these compositions has a good balance of mechanical properties and improved environmental stress crack resistance.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: August 25, 1981
    Assignee: Union Carbide Corporation
    Inventors: Lloyd M. Robeson, George A. Skoler
  • Patent number: 4259458
    Abstract: Described herein are molding compositions comprising a blend of a polyarylate, a polyester, and at least one thermoplastic polymer selected from the group consisting of an aromatic polycarbonate, a styrene resin, an alkyl acrylate resin, a polyurethane, a vinyl chloride polymer, a poly(aryl ether), a copolyetherester block polymer or a polyhydroxyether. These blends have excellent compatability and can be molded into a variety of articles.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: March 31, 1981
    Assignee: Union Carbide Corporation
    Inventor: Lloyd M. Robeson
  • Patent number: 4250279
    Abstract: Described herein are molding compositions of blends of a polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid, and a polyetherimide. These blends can additionally contain thermoplastic polymers which are compatible with the blend of polyarylate and polyetherimide.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: February 10, 1981
    Assignee: Union Carbide Corporation
    Inventors: Lloyd M. Robeson, Markus Matzner, Louis M. Maresca
  • Patent number: 4246381
    Abstract: Described herein are blends of polyarylates derived from a dihydric phenol and an aromatic dicarboxylic acid and a copolyester derived from a cyclohexanedimethanol, an alkylene glycol and an aromatic dicarboxylic acid. These blends have improved processability, weatherability and impact properties.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: January 20, 1981
    Assignee: Union Carbide Corporation
    Inventor: Lloyd M. Robeson
  • Patent number: 4231922
    Abstract: Described herein are polyarylate molding compositions having improved notched izod impact values after molding, which composition comprises a blend of a polyarylate, a polyester, and an impact modifier which is a graft copolymer of a vinyl aromatic, an acrylate, an unsaturated nitrile, or mixtures thereof, grafted onto an unsaturated elastomeric backbone and having a tensile modulus of less than about 100,000 psi. Also, decabromodiphenyl oxide may be included in said composition.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: November 4, 1980
    Assignee: Union Carbide Corporation
    Inventor: Lloyd M. Robeson