Patents by Inventor Richard Derby

Richard Derby 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).

  • Processes for producing organic solvent free urethane/acrylic polymer laminating adhesive for flexible packaging
    Patent number: 5571857
    Abstract: A method for preparing an aqueous adhesive polyurethane/acrylic polymer dispersion by reacting a polyol, a carboxylic acid-containing polyol and a polyisocyanate to form an anionic, water dispersible prepolymer, subsequently chain extending to form the polyurethane component of the polyurethane/acrylic polymer and polymerizing at least one acrylic monomer in the presence of the prepolymer and/or polyurethane to form the acrylic polymer component, characterized by using isophorone diisocyanate as the polyisocyanate and performing the chain extension with a composition comprising a monofunctional amine and a difunctional amine in a 1:4 to 4:1 weight ratio.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: November 5, 1996
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Bruce A. Gruber, Richard Derby
  • Aqueous polyurethane-vinyl polymer dispersions for coating applications
    Patent number: 5173526
    Abstract: A method for making an aqueous polyurethane-vinyl polymer dispersion which comprises:(a) forming a carboxy-containing, water-dispersible, isocyanate terminated polyurethane prepolymer,(b) adding a vinyl monomer composition which includes a polyethylenically unsaturated monomer to the prepolymer to form a prepolymer/monomer mixture,(c) adding a tertiary amine to the prepolymer/monomer mixture,(d) dispersing the prepolymer/monomer mixture in water,(e) adding an oil soluble free radical initiator and a chain-extender to the aqueous dispersion, and(f) polymerizing the vinyl monomer and completing chain extension of the prepolymer by heating the aqueous dispersion.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: December 22, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Bheema R. Vijayendran, Richard Derby, Bruce A. Gruber
  • Aqueous vinyl chloride-ethylene copolymer/polyisocyanate adhesive compositions for wood composites
    Patent number: 5092953
    Abstract: A water-based adhesive composition comprising a polyvinyl alcohol stabilized vinyl chloride-ethylene copolymer latex and 5-50 wt %, based on copolymer, of a polyisocyanate material. The adhesive composition has improved pot life and is used to prepare wood composites demonstrating improved water resistance.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: March 3, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Richard Derby, Bheema R. Vijayendran
  • Inhibiting acid corrosion of metals
    Patent number: 4557838
    Abstract: Metal corrosion by aqueous acid solutions is inhibited by admixture therein of a synergistic additive consisting essentially of:(1) a heterocyclic nitrogen compound or alkylamine,(2) an acetylenic alcohol, and(3) a dialkylthiourea.In certain instances good inhibition against metal corrosion is obtained without the inclusion of the dialkylthiourea in the additive composition.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: December 10, 1985
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, Richard Derby, Glenn T. von dem Bussche, David A. Hannum