Patents by Inventor Richard E. Lavengood

Richard E. Lavengood 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).

  • Rubber modified nylon composition
    Patent number: 5227428
    Abstract: A polyamide composition of improved impact comprising a blend of components (A) 5 to 79.5 weight percent of a graft rubber composition of a graft polymer of methyl (meth)acrylate and/or (meth)acrylonitrile and a vinylaromatic monomer grafted onto a substrate rubber, (B) 94.5 to 20 weight percent of a polyamide resin, and (C) 0.5 to 60 weight percent of a polymer compatibilizer which contains from about 0.05 to 4.0 mole percent of a comonomer containing a functional group which reacts with the polyamide resin is useful for molding and extrusion.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: July 13, 1993
    Assignee: Monsanto Company
    Inventors: Richard E. Lavengood, Allen R. Padwa, Alva F. Harris
  • Rubber-modified nylon composition
    Patent number: 5180777
    Abstract: A polyamide composition of improved impact resistance comprising a blend of components (A) a core/shell graft rubber composition having a thermoplastic copolymer shell comprising a polyamide-interactive monomer, (B) a polyamide and, (C) an acid-containing acrylate copolymer rubber.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: January 19, 1993
    Assignee: Monsanto Company
    Inventors: Allen R. Padwa, Richard E. Lavengood, Raman Patel
  • Blow molding nylon resins
    Patent number: 5043384
    Abstract: Blow molding nylon resin blends comprising nylon resin having relative viscosity of less than about 100 blended with sufficient melt viscosity enhancing polymer to be adaptable to blow molding and sheet extrusion. Such blends have a melt viscosity at low deformation rates of at least ten times the melt viscosity at low deformation rates of the nylon resin.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: August 27, 1991
    Assignee: Monsanto Company
    Inventor: Richard E. Lavengood
  • Rubber-modified nylon composition
    Patent number: 4777211
    Abstract: A polyamide composition of improved impact resistance comprising a blend of components (A) a graft polymer of a (meth)-acrylate and/or (meth)-acrylonitrile and a vinylaromatic monomer grafted onto a substrate rubber, (B) a polyamide resin, (C) an acid-containing acrylate copolymer rubber and (D) an effective amount of an acid-containing polymer to improve the impact resistance of the polymer blend.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: October 11, 1988
    Assignee: Monsanto Company
    Inventors: Richard E. Lavengood, Raman Patel, Allen R. Padwa
  • Rubber modified nylon composition
    Patent number: 4713415
    Abstract: A polyamide composition of improved impact comprising a blend of components (A) 20 to 79.5 weight percent of a graft rubber composition of a graft polymer of methyl (meth)acrylate and/or (meth)acrylonitrile and a vinylaromatic monomer grafted onto a substrate rubber, (B) 94.5 to 20 weight percent of a polyamide resin, an (C) 1 to 60 weight percent of a polymer compatibilizer which contains from about 0.05 to 4.0 mole percent of a comonomer containing a functional group which reacts with the polyamide resin.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: December 15, 1987
    Assignee: Monsanto Company
    Inventors: Richard E. Lavengood, Allen R. Padwa, Alva F. Harris
  • Method for preparing a monoalkenyl aromatic polyblend having a dispersed rubber phase as particles with a bimodal particle size distribution
    Patent number: 4214056
    Abstract: This invention relates to a method for preparing improved monoalkenyl aromatic polyblends having a dispersed rubber phase as rubber particles having a bimodal particle size distribution and compositions thereof.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: July 22, 1980
    Assignee: Monsanto Company
    Inventor: Richard E. Lavengood