Patents Represented by Attorney Richard H. Shear

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  • Chemical process
    Patent number: 5068421
    Abstract: There is disclosed herein improved processes for the preparation of ether carboxylates by reacting in an alkaline reaction medium the salts of maleic acid and malic acid in the presence of a calcium ion catalyst wherein unreacted acid salts are recovered from the reaction medium by lowering the pH of the reaction medium to a range of from about 4 to about 6 in two steps, the first step ending at a pH in the range of from about 7 to about 8.5. The precipitate is removed and the pH of the reaction medium is then lowered further to a pH in the range of from 4 to 6. The precipitated salts are recycled to the synthesis reaction to prepared additional amounts of product.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: November 26, 1991
    Assignee: Monsanto Company
    Inventor: Liou-Liang Horng
  • Styrene/maleates terpolymers
    Patent number: 5068168
    Abstract: Terpolymers of styrene, mono-iso-butyl maleate and mono-2-(n-butoxy)ethyl maleate wherein the ratio of styrene units to maleate units is in the range of about 1:1 to about 1.6:1 and the ratio of mono-iso-butyl maleate units to mono-2-(n-butoxy)ethyl maleate is in the range of about 3:2 to about 1:3. The terpolymers are useful as alkali soluble binders for photoresist compositions.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: November 26, 1991
    Assignee: Monsanto Company
    Inventor: Kang I. Lee
  • Ethylenically unsaturated carbamates and coating compositions
    Patent number: 5055518
    Abstract: Ethylenically unsaturated carbamates are prepared by reaction of unsaturated isocyanates with the hydroxy groups of polyvinyl acetals. The ethylenically unsaturated carbamates either alone or formulated with unsaturated co-reactants such as (meth)-acryloyl monomers and oligomers, maleates and fumarates provide radiation curable coating compositions.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: October 8, 1991
    Assignee: Monsanto Company
    Inventors: William A. Dupont, George E. Sheldrick
  • Rubber modified reaction molded nylon-6 block copolymers
    Patent number: 5051469
    Abstract: Dispersions of core-shell polymers in caprolactam solutions of telechelic polymers capable of being polymerized to form rubber-modified nylon-6 block copolymers having improved impact strength wherein the core-shell polymer comprises a crosslinked elastomer core and a hard thermoplastic polymer shell and wherein the telechelic polymers preformed or formed in situ, are capped with lactam polymerization initiator groups.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: September 24, 1991
    Assignee: Monsanto Company
    Inventor: Kishore Udipi
  • Ethylenically unsaturated carbamates and coating compositions
    Patent number: 5049623
    Abstract: Ethylenically unsaturated carbamates are prepared by reaction of unsaturated isocyanates with the hydroxy groups of styrene allyl alcohol copolymers. The ethylenically unsaturated carbamates either alone or formulated with unsaturated co-reactants such as (meth)-acryloyl monomers and oligomers, maleates and fumarates provide radiation curable coating compositions.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: September 17, 1991
    Assignee: Monsanto Company
    Inventor: William A. Dupont
  • N-cycloalkyl norbornene dicarboximide polymers
    Patent number: 5049632
    Abstract: Polymers of N-cycloalkyl norbornene dicarboximides exhibit high glass transition temperature, low moisture pickup and low dielectric permittivity. Poly(N-cyclohexyl norbornene dicarboximide) has a Tg of 280.degree. C., dielectric constant of about 2.5 and boiling water equilibrated weight gain of only about 2%. Monomers have melting point less than 150.degree. C. and are advantageously prepared by melt polymerization with conventional metathesis ring-opening polymerization catalysts.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: September 17, 1991
    Assignee: Monsanto Company
    Inventor: Jawed Asrar
  • Process for preparing medium density granular sodium phosphates
    Patent number: 5045294
    Abstract: A method of producing medium density granular sodium phosphates by agglomerating STP fines with mineral acids, drying the agglomerated fines and screening to recover the dry agglomerated fines.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: September 3, 1991
    Assignee: Monsanto Company
    Inventor: Louis A. Highfill
  • 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
  • Hybrid amino resin compositions
    Patent number: 5039762
    Abstract: Hybrid curable compositions comprising components curable by condensation and components curable by the free radical initiated polymerization. The components curable by condensation reaction comprise amino resins and co-reactants, the condensation reaction being optionally catalyzed by acid catalysts. The components curable by free radical initiated polymerization comprise acryloyl compounds.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: August 13, 1991
    Assignee: Monsanto Company
    Inventor: David W. Demarey
  • Pourable sulfone peracid compositions
    Patent number: 5039447
    Abstract: The invention relates to aqueous stable liquid bleaching compositions comprising a sulfone peroxycarboxylic acid, an anionic surfactant, a non-ionic surfactant and optionally a salt stabilizer.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: August 13, 1991
    Assignee: Monsanto Company
    Inventor: Bertie J. Reuben
  • Gallium purification
    Patent number: 5030427
    Abstract: Gallium is purified by washing organic solutions containing hydroxamic acid complexes of gallium with aqueous solutions, individually or in series, especially amine or ammonia solutions, and dilute acid solutions. The method is applicable to a variety of gallium sources, and capable of producing gallium of extremely high purity, especially with a repetitive procedure.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: July 9, 1991
    Assignee: Monsanto Company
    Inventor: Bruce F. Monzyk
  • Coating compositions containing ethylenically unsaturated carbamates
    Patent number: 5030696
    Abstract: Ethylenically unsaturated carbamates prepared by addition of unsaturated isocyanates to the hydroxy groups of styrene allyl alcohol copolymers are formulated with allylic monomers and unsaturated co-reactants selected from (meth)-acryloyl monomers and oligomers, maleates and fumarates to provide air-dry-and heat-curable coating compositions.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: July 9, 1991
    Assignee: Monsanto Company
    Inventors: William A. DuPont, Jerome W. Knapczyk
  • Process for preparing 1-hydroxy-3-oxa-1,2,4,5-pentane tetracarboxylic acid/3,6-dioxa-1,2,4,5,7,8- octane hexacarboxylic acid mixtures
    Patent number: 5028723
    Abstract: There is disclosed an improved process for preparing 1-hydroxy-3-oxa-1,2,4,5-pentane tetracarboxylic acid and 3,6-dioxa-1,2,4,5,7,8-octane hexacarboxylic acid wherein the reaction mixture has a solids concentration of above about 60%, by weight whereby the amount of by-product fumarate is reduced.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: July 2, 1991
    Assignee: Monsanto Company
    Inventor: Liou L. Horng
  • Coating compositions containing ethylenically unsaturated carbamates
    Patent number: 5026771
    Abstract: Ethylenically unsaturated carbamates prepared by addition of unsaturated isocyanates to the hydroxy groups of polyvinyl acetals are formulated with allylic monomers and optionally unsaturated co-reactants selected from (meth)-acryloyl monomers and oligomers, maleates and fumarates to provide air-dry- and heat-curable coating compositions.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: June 25, 1991
    Assignee: Monsanto Company
    Inventors: William A. Dupont, Jerome W. Knapczyk
  • Process for preparing sodium tripolyphosphate
    Patent number: 5004589
    Abstract: There is disclosed a process from producing granular sodium tripolyphosphate of predetermined particle size by means of calcining sodium orthophosphate dried from water solution and milled to a predetermined particle size. The tripolyphosphate is produced having approximately the same particle size distribution as the orthophosphate feed. Moisturizing the feed prior to calcining increases the assay of the product.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: April 2, 1991
    Assignee: Monsanto Company
    Inventors: George W. Cadwallader, Louis A. Highfill, Gregory D. Kurdys, Richard S. Turigliatto
  • Sulfone peroxycarboxylic acids
    Patent number: 5004558
    Abstract: There are disclosed novel, highly stable sulfone peroxycarboxylic acids useful in detergent compositions or alone as bleaching agents which are represented by the formula ##STR1## wherein A and B are organic moieties bonded to the sulfur atom by a carbon atom and one of A and B contains from 1 to 4 ##STR2## groups bonded to carbon atoms.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: April 2, 1991
    Assignee: Monsanto Company
    Inventors: David R. Dyroff, Daniel P. Getman, Joan K. Glascock
  • Rubber modified reaction moldable nylon-6 compositions
    Patent number: 4994524
    Abstract: Dispersions of core-shell polymers in caprolactam wherein the core-shell polymer comprises a crosslinked elastomer core and a hard thermoplastic shell prepared by adding an aqueous dispersion of core-shell polymer to an aqueous solution of caprolactam, stirring the mixture to provide a uniform dispersion and evaporating water from the mixture. Such dispersions can be combined with caprolactam polymerization initiator and caprolactam polymerization catalyst to provide rubber-modified nylon-6 polymers.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: February 19, 1991
    Assignee: Monsanto Company
    Inventor: Kishore Udipi
  • Cyclopentanedioxocarbonyl vinylene polymers
    Patent number: 4975507
    Abstract: Polymer comprising cyclopentanedioxocarbonyl vinylene units are prepared by ring opening metathesis polymerization of the endo stereoisomer of norbornene dioxocarbonyl monomer. Such polymers prepared in bulk or solution are useful as engineering thermoplastics for injection molding and solution casting. Such polymers can also be polymerized in molds.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: December 4, 1990
    Assignee: Monsanto Company
    Inventor: Jawed Asrar
  • Solvent extraction of nickel using hydroxamic acids
    Patent number: 4975253
    Abstract: Nickel and cobalt are reversibly extracted from nickel and cobalt bearing aqueous solutions using solvent extraction techniques by contacting the aqueous solution with a hydrocarbon solvent containing a N-alkylalkanohydroxamic acid having at least about 8 carbon atoms.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: December 4, 1990
    Assignee: Monsanto Company
    Inventors: Bruce F. Monzyk, Arthur R. Henn
  • Norbornene dicarboximide polymer
    Patent number: 4965330
    Abstract: Polymerization of norbornene dicarboximide yields polymers of high Tg, e.g. greater than 170.degree. C. Preferred polymers of N-phenyl norbornene dicarboximide exhibit Tg greater than 210.degree.C.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: October 23, 1990
    Assignee: Monsanto Company
    Inventor: Jawed Asrar