Patents Represented by Attorney Frank M. Van Riet

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  • Process for the preparation of monomeric tetramethoxymethylglycoloril
    Patent number: 5180835
    Abstract: Described is an improved process for the preparation of fully methylolated, substantially fully etherified, and substantially monomeric tetramethoxymethlglycoluril useful as a crosslinking agent for powder coatings. The improved process adds after the conventional steps of methylolation and etherification the new steps of acidic distillation followed by an additional etherification.
    Type: Grant
    Filed: June 25, 1991
    Date of Patent: January 19, 1993
    Assignee: American Cyanamid Company
    Inventors: William Jacobs, III, Fred W. Luciw, Ilze B. Kancans, Daniel W. Thomas, Leslie Boldizer, Robert G. Lees
  • Vinyl-terminated carbamylmethylated melamines, vinyl-terminated polyurethane/polyamide polymers and coating/adhesive compositions containing same
    Patent number: 5175201
    Abstract: Disclosed are novel nitrogen containing heterocyclic compounds and novel vinyl terminated polyurethane/polyamide polymers together with the use of both of these compounds in a novel adhesive and coating composition. The nitrogen containing heterocyclic compounds of the invention contain two vinyl-terminated substituents and at least one carbamylmethyl substituent and have a nucleus selected from melamine, oligomers of melamine, benzoguanamine, and oligomers of benzoguanamine, glycoluril and oligomers of glycoluril. The vinyl terminated polyurethane compounds of the invention have a molecular weight of from about 3000 to about 80000, and contain at least two vinyl end groups.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: December 29, 1992
    Assignee: American Cyanamid Company
    Inventors: Peter S. Forgione, Yuhshi Luh, Balwant Singh, William A. Henderson, Jr.
  • Preparation of chemiluminescent vinyl halide or vinylidene halide polymer structures
    Patent number: 5173218
    Abstract: A plasticized vinyl halide or vinylidene halide polymer structure useful in a chemiluminescent lighting device is disclosed wherein said structure is prepared from vinyl halide or vinylidene halide polymers. The plasticizer is preferably a dibutyl phthalate solution of a chemiluminescent oxalate and a fluorescer that is incorporated into the structure. Addition of a hydrogen peroxide activator solution to the structure produces the glow of chemical light. The structure has good strength, flexibility, porosity and absorbance of the activator solution. A method for the preparation of the structure is also disclosed.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: December 22, 1992
    Assignee: American Cyanamid Company
    Inventors: Martin L. Cohen, William E. Bay, Lynn E. Errigo
  • Metal-coated fiber compositions containing alloy barrier layer
    Patent number: 5171419
    Abstract: The present invention disclosed metal-coated fibers and metal matrix composites made therefrom comprising metal-coated carbon or graphite fiber which have a layer of CoW or NiW alloy interposed between the fiber and its outer metal layer.
    Type: Grant
    Filed: January 18, 1990
    Date of Patent: December 15, 1992
    Assignee: American Cyanamid Company
    Inventors: Nea S. Wheeler, David S. Lashmore
  • Cross-linked anionic and amphoteric polymeric microparticles
    Patent number: 5171808
    Abstract: Novel compositions comprising anionic and/or amphoteric organic polymeric microparticles are disclosed, along with a method for their production. The products are useful in flocculating a wide variety of dispersions of suspended solids and in paper-making.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: December 15, 1992
    Assignee: American Cyanamid Company
    Inventors: Roderick G. Ryles, Dan S. Honig, Elieth W. Harris, Roger E. Neff
  • Charged organic polymer microbeads in paper making process
    Patent number: 5167766
    Abstract: In a papermaking process, improved drainage and retention are obtained when ionic, organic microbeads of less than about 1,000 nm in diameter if crosslinked or less about than 60 nm in diameter if noncrosslinked are added either alone or in combination with a high molecular weight organic polymer, and/or polysaccharide. Further addition of alum enhances drainage formation and retention properties in papermaking stock with and without the present of other additives used in papermaking processes.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: December 1, 1992
    Assignee: American Cyanamid Company
    Inventors: Dan S. Honig, Elieth Harris
  • Isopropenyl-alpha, alpha-dimethylbenzyl isocyanate--grafted polymers
    Patent number: 5164453
    Abstract: Novel grafted polymers having backbones formed from unsaturated monomers and having pendent isocyanate containing sidechains derived from isopropenyl-alpha, alpha-dimethylbenzyl isocyanate or copolymers thereof are described.Curable coating and molding compositions employing the novel grafted polymers of the invention in combination with isocyanate reactive materials are also described.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: November 17, 1992
    Assignee: American Cyanamid Company
    Inventors: Michael M. Fisher, Leroy A. White, Howard R. Lucas
  • Surface-modified polyacrylonitrile fibrous substrates
    Patent number: 5155174
    Abstract: A surface-modified fibrillated fiber composition is disclosed herein which comprises polyacrylonitrile homopolymer or copolymer and a surface of pendant N-haloamide groups. Also disclosed is a process for the production of said composition.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: October 13, 1992
    Assignee: American Cyanamid Company
    Inventors: Laurence W. Chang, Larry S. Anderson, David A. Ley
  • Stabilization of hydroxylamine solutions
    Patent number: 5141730
    Abstract: Solutions of an hydroxylamine or an at least partially neutralized hydroxylamine salt are stabilized against decomposition by adding thereto a water-soluble alkali metal, alkaline earth metal or ammonium thiosulfate.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: August 25, 1992
    Assignee: American Cyanamid Company
    Inventor: Howard I. Heitner
  • Interleaf layer in fiber reinforced resin laminate composites
    Patent number: 5141804
    Abstract: Laminated composites made with layers of fiber reinforced thermosetting resin prepregs and with thermoplastic film interleaf layers are improved by using thermoplastic film coated with thermosetting adhesive as the interleaf layer. In composites having a honeycomb core with thermosetting prepreg skins, the thermoplastic film is a moisture barrier to exclude water vapor from the honeycomb cavities.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: August 25, 1992
    Assignee: American Cyanamid Company
    Inventors: R. Scott Riefler, John W. Powers
  • Styrene/acrylic-type polymers for use as surface sizing agents
    Patent number: 5139614
    Abstract: A process is disclosed for the preparation of styrene/acrylic type polymers which are useful in the sizing of paper. The process comprises polymerizing the monomers in an alcohol/water mixture at reflux temperature in the presence of a free-radical generating catalyst. The catalyst is added portion-wise over the course of the reaction and the resultant polymer is neutralized while substantially simultaneously separating the alcohol/water mixture and adding water to recover a product of less than 25% polymer solids.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: August 18, 1992
    Assignee: American Cyanamid Company
    Inventors: Otto S. dePierne, David L. Dauplaise, Robert J. Proverb
  • Surface-modified polyacrylonitrile beads
    Patent number: 5137983
    Abstract: A bead composition is disclosed herein which comprises a core of a polyacrylonitrile homopolymer or copolymer and a surface of pendant N-haloamide groups. Also disclosed is a process for the production of said composition.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: August 11, 1992
    Assignee: American Cyanamid Company
    Inventors: Laurence W. Chang, Larry S. Anderson, David A. Ley
  • Styrene/acrylic-type polymers for use as surface sizing agents
    Patent number: 5138004
    Abstract: A process is disclosed for the preparation of styrene/acrylic type polymers which are useful in the sizing of paper. The process comprises polymerizing the monomers in an alcohol/water mixture at reflux temperature in the presence of a free-radical generating catalyst. The catalyst is added portion-wise over the course of the reaction and the resultant polymer is neutralized while substantially simulaneously separating the alcohol/water mixture and adding water to recover a product of less than 25% polymer solids.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: August 11, 1992
    Inventors: Otto S. dePierne, David L. Dauplaise, Robert J. Proverb
  • Removal of humate from bayer alumina liquors
    Patent number: 5133874
    Abstract: A process is disclosed for reducing the turbidity of a Bayer process liquor containing a cationic polymer-humate complex comprising adding to said liquor a higher molecular weight, cationic polymer.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: July 28, 1992
    Assignee: American Cyanamid Company
    Inventors: Donald P. Spitzer, Peter J. Strydom
  • Emulsified mannich acrylamide polymers
    Patent number: 5132023
    Abstract: Mannich (alk)acrylamide microparticles are produced at high solids contents without a significant increase in bulk viscosity by inverse microemulsion polymerization and provide superior dewatering characteristics.
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: July 21, 1992
    Assignee: American Cyanamid Company
    Inventors: Joseph J. Kozakiewicz, Sun-Yi Huang
  • Reversible crimp bicomponent acrylic fibers
    Patent number: 5130195
    Abstract: An acrylic fiber tow is disclosed which comprises 1) monocomponent filaments of each of two acrylonitrile polymers differing in hydrophilic properties, 2) bicomponent filaments of both of said polymers having one interface between polymers components and 3) bicomponent filaments of both of said polymers having more than one interface between polymer components. This fiber, however, in spite of its composition of numerous filaments of differing structure provides a tow bundle having a desirable level of reversible crimp measured in a manner specific to the type of crimp designated.Also disclosed is a method for wet-spinning the novel fiber using a static mixing unit in conjunction with a spinnerette normally used for wet-spinning monocomponent filaments.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: July 14, 1992
    Assignee: American Cyanamid Company
    Inventors: Spero Sampanis, Ronald E. Pfeiffer, Francesco De Maria, William E. Streetman, Maurice M. Zwick
  • Radar-and infrared detectable structural simulation decoy
    Patent number: 5129323
    Abstract: A simulation decoy whose position and structural purport are determinable by infrared detection means is disclosed, which comprises a multi-dimensional display body containing a sufficient quantity of combustible carbon to provide a controlled burning for a predetermined length of time, means to initiate ignition of said carbon to produce sustained burning of said multi-dimentionsal display body to activate such simulation decoy for infrared detection, and specific metal coated fibers to provide radar-detection capability. It may be utilized to mimic mobile structures such as land-based vehicles, marine vehicles, or aircraft, as a two-dimensional or three-dimensional display, providing an infrared and radar signature useful as a defensive countermeasure in warfare or other battlefield conditions.
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: July 14, 1992
    Assignee: American Cyanamid Company
    Inventor: George B. Park
  • Method of making hydroxamic acid polymers from primary amide polymers
    Patent number: 5128420
    Abstract: A method for preparing hydroxamic acid polymers from primary amide polymers wherein polyvinyl monomers such as polyacrylamide are reacted with hydroxyl amine in aqueous solution at room temperature. The low reaction temperature is crucial to producing a high yield (70%) of polymer with hydroxamic acid groups and having a low carboxylic acid content (less than 15%, preferably less than 3%). The polymers display high metal affinity over a broad pH range.The polymers are particularly useful for biomedical applications due to the low carboxylic acid content and for the removal and purification of metals due to the high binding constants and rapid reaction rates.
    Type: Grant
    Filed: December 13, 1988
    Date of Patent: July 7, 1992
    Assignee: Massachusetts Institute of Technology
    Inventors: Abraham J. Domb, Robert S. Langer, Ernest G. Cravalho, Gershon Golomb, Edith Mathiowitz, Cato T. Laurencin
  • Chemiluminescent solution based on substituted perylene
    Patent number: 5122306
    Abstract: Compositions adapted to be reacted with hydrogen peroxide to provide chemiluminescent light are disclosed wherein the fluorescer is a perylene derivative.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: June 16, 1992
    Assignee: American Cyanamid Company
    Inventors: Andre Van Moer, Jacques Ladyjensky
  • Chemiluminescent signal for attachment to the arm
    Patent number: D330602
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: October 27, 1992
    Assignee: American Cyanamid Company
    Inventors: William E. Bay, John J. Freeman, Jr., Robert D. Giglia