Abstract: 2-(2-Fluoro-substituted phenyl)-6-amino-5-chloro-4-pyrimidinecarboxylic acid and its derivatives are potent herbicides demonstrating a broad spectrum of weed control.
Type:
Grant
Filed:
July 30, 2008
Date of Patent:
March 29, 2011
Assignee:
Dow AgroSciences LLC
Inventors:
Jeffrey B. Epp, William C. Lo, Paul R. Schmitzer, Carla N. Yerkes
Abstract: 6-Amino-5-halo-4-pyrimidinecarboxylic acids having poly-substituted aryl substituents in the 2-position, and their amine and acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control.
Type:
Grant
Filed:
October 9, 2007
Date of Patent:
May 26, 2009
Assignee:
Dow AgroSciences LLC
Inventors:
Jeffrey B. Epp, Paul R. Schmitzer, James M. Ruiz, Terry W. Balko, Thomas L. Siddall, Carla N. Yerkes
Abstract: 4-Chloro-4-alkoxy-1,1,1-trifluoro-2-butanones, prepared by reacting alkyl vinyl ethers with trifluoroacetyl chloride, are useful for preparing 4-alkoxy-1,1,1-trifluoro-3-buten-2-ones.
Abstract: 4-Aminopicolinic acids having tri- and tetra-substituted aryl substituents in the 6-position, and their amine and acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control.
Type:
Grant
Filed:
October 4, 2007
Date of Patent:
March 3, 2009
Assignee:
Dow AgroSciences LLC
Inventors:
Terry W. Balko, John F. Daeuble, Thomas L. Siddall
Abstract: 4-Trifluoromethyl-2(1H)-pyridinone is prepared by reaction of 4-alkoxy-1,1,1-trifluorobut-3-en-2-one or 4,4-dialkoxy-1,1,1-trifluorobutan-2-one with a trialkyl phosphonoacetate followed by cyclization.
Type:
Grant
Filed:
June 24, 2005
Date of Patent:
February 10, 2009
Assignee:
Dow AgroSciences LLC
Inventors:
Christopher Thomas Hamilton, Michael Frederick Gullo, Michael Allen Gonzalez, Gary Alan Roth, David Bruce Gorman, Joachim Gebhardt, Norbert Götz, Hagen Jaedicke, Guido Mayer, Michael Rack
Abstract: 4-Aminopicolinic acids having alkyl or alkenyl substituents in the 6-position and their amine and acid derivatives are potent herbicides demonstrating a broad spectrum of weed control.
Type:
Grant
Filed:
April 2, 2004
Date of Patent:
October 7, 2008
Assignee:
Dow AgroSciences LLC
Inventors:
Terry William Balko, Ann Marie Buysse, Stephen Craig Fields, Nicholas Martin Irvine, William Chi-Leung Lo, Christian Thomas Lowe, John Sanders Richburg, Paul Richard Schmitzer
Abstract: Methylidene mevalonic acid, a material isolated from a fungal extract, and its primary alcohol and carboxylic acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control. These materials are useful for weed control and for the cultivation of organically grown crops.
Type:
Grant
Filed:
November 18, 2005
Date of Patent:
July 1, 2008
Assignee:
Dow AgroSciences LLC
Inventors:
Ben Clifford Gerwick, III, Paul Richard Graupner, Stephen Craig Fields, Paul Richard Schmitzer, William Kirkland Brewster
Abstract: 2-Chloro-5-trichloromethylpyridine is obtained by chlorinating ?-picoline in the vapor phase using a Mordenite zeolite or a supported palladium catalyst.
Type:
Grant
Filed:
April 26, 2005
Date of Patent:
March 18, 2008
Assignee:
Dow AgroSciences LLC
Inventors:
Kent Douglas Campbell, Dana Alan Livingston, Hawk Suewah Wan, Kenneth Michael Larson, Brian John Schoeman, Steven Roy Lakso
Abstract: This invention relates to a high-strength herbicidal formulation containing high concentrations of glyphosate monomethylamine or dimethylamine salt and one or more surfactants selected to enhance the herbicidal activity of the glyphosate salts. The formulations exhibit significantly lower viscosity at high concentrations.
Abstract: 4-Aminopicolinic acids having tri- and tetra-substituted aryl substituents in the 6-position, and their amine and acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control.
Type:
Grant
Filed:
January 12, 2007
Date of Patent:
January 1, 2008
Assignee:
Dow AgroSciences LLC
Inventors:
Terry W. Balko, Paul R. Schmitzer, John F. Daeuble, Carla N. Yerkes, Thomas L. Siddall
Abstract: 6-Amino-5-halo-4-pyrimidinecarboxylic acids having poly-substituted aryl substituents in the 2-position, and their amine and acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control.
Type:
Grant
Filed:
January 12, 2007
Date of Patent:
November 27, 2007
Assignee:
Dow Agrosciences LLC
Inventors:
Jeffrey B. Epp, James M. Ruiz, Paul R. Schmitzer, Terry W. Balko, Thomas L. Siddall, Carla N. Yerkes
Abstract: 4-Aminopicolinic acids having (1,1-difluoroalkyl) substituents in the 6-position and their amine and acid derivatives are potent herbicides demonstrating a broad spectrum of weed control.
Type:
Grant
Filed:
August 4, 2004
Date of Patent:
November 6, 2007
Assignee:
Dow AgroSciences LLC
Inventors:
Terry William Balko, Stephen Craig Fields, Nicholas Martin Irvine, Christian Thomas Lowe, Paul Richard Schmitzer
Abstract: Oxazoline compounds having a 3,5-disubstituted-4-pyridyl group in the 2-position and a thienyl, thiazolyl or an arylphenyl group in the 4-position are effective in controlling aphids, insects and mites.
Type:
Grant
Filed:
June 22, 2001
Date of Patent:
August 2, 2005
Assignee:
Dow AgroSciences LLC
Inventors:
Francis Eugene Tisdell, Scott Jerome Bis, Vidyadhar Babu Hegde, Timothy Patrick Martin, Denise Marie Perreault, Maurice Chee Hoong Yap, Katherine Anne Guenthenspberger, James Edwin Dripps, James Michael Gifford, Joe Raymond Schoonover, Laura Lee Karr, Leonard Paul Dintenfass, Paul Allen Neese
Abstract: In general the present invention relates to a continuous process for manufacturing (N-phosphonomethyl) glycine, glyphosate, by the catalyzed oxidation of N-phosphonomethyliminodiacetic acid. Glyphosate can be provided in high yield and in a cost efficient process by minimizing the competing side reactions and by-products. The process includes conducting the oxidation reaction and selecting an appropriate catalyst to maximize the rate of the oxidation of N-phosphonomethyliminodiacetic acid while at the same time minimizing the rate of oxidation of glyphosate in the same reaction.