Patents Represented by Attorney A. H. Cole
  • Patent number: 4882132
    Abstract: Cobalt is reversibly extracted from cobalt bearing aqueous solutions using solvent extraction techniques by contacting the aqueous solution with a hydrocarbon solvent containing a N-alkylakanohydroxamic acid having at least about 8 carbon atoms. A new class of cobalt complexes is also provided.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: November 21, 1989
    Assignee: Monsanto Company
    Inventors: Bruce F. Monzyk, Arthur R. Henn
  • Patent number: 4853200
    Abstract: Unmilled commercially available granular "natural" soda ash is reacted with orthophosphoric acid to produce a highly concentrated slurry at a molar Na:P ratio of about 1.5 in a continuous process. Problems associated with incomplete reaction are solved and the slurry can be dried to the double salt Na.sub.3 H.sub.3 (PO.sub.4).sub.2 or reacted with aqueous sodium hydroxide to produce a superior precursor for manufacturing sodium tripolyphosphate.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: August 1, 1989
    Assignee: Monsanto Company
    Inventors: N. Earl Stahlheber, John E. Lyon
  • Patent number: 4847005
    Abstract: Hydrolytically stable liquid detergent formulations are disclosed containing the potassium salt of polymeric acetal carboxylates. Such liquid formulations remain single phase for extended periods of time.
    Type: Grant
    Filed: October 22, 1987
    Date of Patent: July 11, 1989
    Assignee: Monsanto Company
    Inventor: Thomas Christ
  • Patent number: 4824997
    Abstract: A method of carbonylation of formaldehyde is disclosed. In the method, an aqueous formaldehyde concentrate comprising between about 60% by weight and about 85% by weight formaldehyde, carbon monoxide and sulfuric acid are brought together in the absence of an effective amount of added Group IB cocatalyst in a reaction zone under a carbon monoxide partial pressure in the reaction zone of not greater than about 1.72.times.10.sup.7 N/M.sup.2. A carbonylation reaction is thereby effected in which a carbonylation product is produced comprising at least about 2% by weight sulfuric acid and a mixture of compounds of the formula:HO(CH.sub.2 COO).sub.n Hwherein n is a positive integer of at least 1. Also disclosed is a method for preparation of an alkyl glycolate by esterification of the carbonylation reaction mixture.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: April 25, 1989
    Assignee: Monsanto Company
    Inventors: Alistair MacFarlane, David R. Dyroff, Robert V. Brill
  • Patent number: 4704465
    Abstract: A process for preparing an ethylenediamine intermediate for the production of an ethylenediaminetetraacetonitrile. Formaldehyde is combined with ethylenediamine at a mole ratio of 1 to 2 respectively wherein the molar ratio of ethylenediamine to formaldehyde in the reaction mixture at least 0.48 or greater.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: November 3, 1987
    Assignee: Monsanto Company
    Inventors: Kent P. Lannert, Sum-Muk Lee
  • Patent number: 4643662
    Abstract: An apparatus is provided for pelletizing finely divided particulate or pulverant materials. The apparatus is particularly effective in pelletizing large quantities of such particulate materials to a desirable spheroidal pellet size.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: February 17, 1987
    Assignee: Monsanto Company
    Inventors: Lawrence F. Rakestraw, Harry M. Stevens
  • Patent number: 4639480
    Abstract: Disclosed are compositions of polyethylene terephthalate and certain N-substituted phthalimide plasticizers, particularly polyethylene terephthalate molding compositions additionally containing a reinforcing agent and a nucleating agent.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: January 27, 1987
    Assignee: Monsanto Company
    Inventors: Gail H. Birum, Thomas C. Mathis, Richard D. Stolk
  • Patent number: 4604163
    Abstract: Grafted starch polymer solution of a low viscosity through the use of cinnamic acid material. The cinnamic acid material is incorporated into the grafted starch polymer which is prepared from starch and vinyl monomer, preferably acrylamide.
    Type: Grant
    Filed: October 17, 1985
    Date of Patent: August 5, 1986
    Assignee: Monsanto Company
    Inventor: Donald N. Van Eenam
  • Patent number: 4581464
    Abstract: A process for producing alkenyl succinic anhydrides by the reaction of an olefin with maleic anhydride in the presence of alkyl succinic anhydride is provided. The alkenyl succinic anhydrides are valuable precursors for the preparation of alkyl succinic anhydrides.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: April 8, 1986
    Assignee: Monsanto Company
    Inventors: Victor L. Ross, Robert G. Schultz
  • Patent number: 4567284
    Abstract: Cobalt is reversibly extracted from 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. A new class of cobalt complexes is also provided.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: January 28, 1986
    Assignee: Monsanto Company
    Inventors: Bruce F. Monzyk, Arthur R. Henn
  • Patent number: 4557926
    Abstract: Disclosed is a tablet for disinfecting flush toilets comprising from about 20% to about 90% alkali metal salt of dichloroisocyanuric acid and at least about 5% of either sodium bromide or potassium bromide. Also disclosed is a method of using the tablet.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: December 10, 1985
    Assignee: Monsanto Company
    Inventors: G. Douglas Nelson, Steve Vazopolos
  • Patent number: 4547589
    Abstract: A process for producing nitrilotriacetate salts from nitrilotriacetonitrile in which a mixture of substantially stoichiometric amounts of an alkali metal hydroxide and nitrilotriacetonitrile in water are partially hydrolyzed, followed by boiling to complete the reaction, followed by addition of a bleaching agent, and recovery of the product as a solution or in crystalline form.
    Type: Grant
    Filed: January 3, 1984
    Date of Patent: October 15, 1985
    Assignee: Monsanto Company
    Inventor: Chung Y. Shen
  • Patent number: 4545804
    Abstract: Novel N(aminophosphinylmethyl)glycine derivatives are described that show significant herbicidal activity.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: October 8, 1985
    Assignee: Monsanto Company
    Inventors: John E. Franz, Robert J. Kaufman
  • Patent number: 4542206
    Abstract: Solid state compositions having improved storage stability are provided by reacting an aqueous solution or slurry of polymeric acetal carboxylate and alkali metal hydroxide with carbon dioxide to form alkali metal carbonate in intimate admixture with the polymer and recovering the admixture in solid form. The compositions are useful as builders in detergent formulations.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: September 17, 1985
    Assignee: Monsanto Company
    Inventor: David R. Dyroff
  • Patent number: 4528280
    Abstract: Phosphorus-vanadium mixed oxide catalysts are prepared by contacting a tetravalent vanadium compound, dissolved in an aqueous, non-oxidizing acid medium, with crystalline diphosphoric acid to form a phosphorus-vanadium mixed oxide catalyst precursor. The resulting catalyst precursor-containing solution is subjected to a series of concentration/dilution cycles to induce crystallization of the catalyst precursor. The crystals are collected, dried, formed into desired structures, and calcined at temperatures from about 300.degree. C. to about 600.degree. C.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: July 9, 1985
    Assignee: Monsanto Company
    Inventor: James T. Wrobleski
  • Patent number: 4515973
    Abstract: Maleic anhydride is produced by the oxidation of a nonaromatic hydrocarbon having at least four carbon atoms in a straight chain with molecular oxygen or a molecular oxygen-containing gas in the vapor phase in the presence of a phosphorus-vanadium mixed oxide catalyst. Such catalysts are prepared by contacting a tetravalent vanadium compound, dissolved in an aqueous, non-oxidizing acid medium, with crystalline diphosphoric acid to form a phosphorus-vanadium mixed oxide catalyst precursor. The resulting catalyst precursor-containing solution is subjected to a series of concentration/dilution cycles to induce crystallization of the catalyst precursor. The crystals are collected, dried, formed into desired structures, and calcined at temperatures from about 300.degree. C. to about 600.degree. C.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: May 7, 1985
    Assignee: Monsanto Company
    Inventor: James T. Wrobleski
  • Patent number: 4515731
    Abstract: Catalytic asymmetric hydrogenation of the Z geometric isomer of a compound of the formula ##STR1## wherein at least one of R and R.sup.1 represents hydrogen and the other represents hydrogen, lower alkyl or aryl; R.sup.2 represents ##STR2## wherein R.sup.4 and R.sup.5 each independently represent hydrogen, lower alkyl or aryl, R.sup.6 represents hydrogen, lower alkyl, aryl or an alkali metal; and R.sup.3 represents ##STR3## wherein R.sup.7 and R.sup.8 each independently represent lower alkyl or aryl; provided that, when R.sup.3 is ##STR4## R.sup.2 is --CN, in the presence of a homogeneous, coordination complex catalyst comprising rhodium, iridium or ruthenium in combination with an optically active bis phosphine ligand provides an outstanding level of optical purity.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: May 7, 1985
    Assignee: Monsanto Company
    Inventors: Gerald L. Bachman, Billy D. Vineyard
  • Patent number: 4502923
    Abstract: High purity alkyl glyoxylate is produced from complex mixtures containing alkyl glyoxylate, alkyl glycolate, water, alcohol and miscellaneous impurities. High purity alkyl glyoxylate is useful in the synthesis of alkyl glyoxylate polymers.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: March 5, 1985
    Assignee: Monsanto Company
    Inventors: David R. Dyroff, Yueting Chou, Dario R. Cova
  • Patent number: 4490528
    Abstract: A process for producing chloro-s-triazine trione with improved crystal properties comprising reacting cyanuric acid, alkali metal hydroxide, and chlorine in water, and crystallizing the resulting chloro-s-triazine trione in the presence of an alpha olefin sulfonate with from 4 to 20 carbon atoms.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: December 25, 1984
    Assignee: Monsanto Company
    Inventor: James C. Wygant
  • Patent number: 4487723
    Abstract: Substituted-butanediperoxoic acids represented by the formula ##STR1## wherein R is alkyl of 6 to 18 carbon atoms or phenyl are useful oxidizing agents. These substituted-butanediperoxoic acids are useful as bleaching agents and disinfecting agents.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: December 11, 1984
    Assignee: Monsanto Company
    Inventor: James M. Mayer