Patents Represented by Attorney A. H. Cole
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Patent number: 4882132Abstract: 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: GrantFiled: January 20, 1987Date of Patent: November 21, 1989Assignee: Monsanto CompanyInventors: Bruce F. Monzyk, Arthur R. Henn
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Patent number: 4853200Abstract: 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: GrantFiled: March 21, 1988Date of Patent: August 1, 1989Assignee: Monsanto CompanyInventors: N. Earl Stahlheber, John E. Lyon
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Patent number: 4847005Abstract: 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: GrantFiled: October 22, 1987Date of Patent: July 11, 1989Assignee: Monsanto CompanyInventor: Thomas Christ
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Patent number: 4824997Abstract: 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: GrantFiled: January 25, 1988Date of Patent: April 25, 1989Assignee: Monsanto CompanyInventors: Alistair MacFarlane, David R. Dyroff, Robert V. Brill
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Patent number: 4704465Abstract: 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: GrantFiled: November 22, 1985Date of Patent: November 3, 1987Assignee: Monsanto CompanyInventors: Kent P. Lannert, Sum-Muk Lee
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Patent number: 4643662Abstract: 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: GrantFiled: April 23, 1985Date of Patent: February 17, 1987Assignee: Monsanto CompanyInventors: Lawrence F. Rakestraw, Harry M. Stevens
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Patent number: 4639480Abstract: 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: GrantFiled: May 17, 1985Date of Patent: January 27, 1987Assignee: Monsanto CompanyInventors: Gail H. Birum, Thomas C. Mathis, Richard D. Stolk
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Patent number: 4604163Abstract: 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: GrantFiled: October 17, 1985Date of Patent: August 5, 1986Assignee: Monsanto CompanyInventor: Donald N. Van Eenam
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Patent number: 4581464Abstract: 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: GrantFiled: December 24, 1984Date of Patent: April 8, 1986Assignee: Monsanto CompanyInventors: Victor L. Ross, Robert G. Schultz
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Patent number: 4567284Abstract: 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: GrantFiled: December 17, 1984Date of Patent: January 28, 1986Assignee: Monsanto CompanyInventors: Bruce F. Monzyk, Arthur R. Henn
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Patent number: 4557926Abstract: 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: GrantFiled: June 10, 1985Date of Patent: December 10, 1985Assignee: Monsanto CompanyInventors: G. Douglas Nelson, Steve Vazopolos
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Patent number: 4547589Abstract: 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: GrantFiled: January 3, 1984Date of Patent: October 15, 1985Assignee: Monsanto CompanyInventor: Chung Y. Shen
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Patent number: 4545804Abstract: Novel N(aminophosphinylmethyl)glycine derivatives are described that show significant herbicidal activity.Type: GrantFiled: November 21, 1983Date of Patent: October 8, 1985Assignee: Monsanto CompanyInventors: John E. Franz, Robert J. Kaufman
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Patent number: 4542206Abstract: 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: GrantFiled: July 2, 1984Date of Patent: September 17, 1985Assignee: Monsanto CompanyInventor: David R. Dyroff
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Patent number: 4528280Abstract: 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: GrantFiled: December 28, 1983Date of Patent: July 9, 1985Assignee: Monsanto CompanyInventor: James T. Wrobleski
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Patent number: 4515973Abstract: 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: GrantFiled: December 28, 1983Date of Patent: May 7, 1985Assignee: Monsanto CompanyInventor: James T. Wrobleski
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Patent number: 4515731Abstract: 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: GrantFiled: July 8, 1983Date of Patent: May 7, 1985Assignee: Monsanto CompanyInventors: Gerald L. Bachman, Billy D. Vineyard
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Patent number: 4502923Abstract: 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: GrantFiled: October 6, 1983Date of Patent: March 5, 1985Assignee: Monsanto CompanyInventors: David R. Dyroff, Yueting Chou, Dario R. Cova
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Patent number: 4490528Abstract: 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: GrantFiled: August 1, 1983Date of Patent: December 25, 1984Assignee: Monsanto CompanyInventor: James C. Wygant
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Patent number: 4487723Abstract: 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: GrantFiled: January 4, 1982Date of Patent: December 11, 1984Assignee: Monsanto CompanyInventor: James M. Mayer