Patents by Inventor Zoltan Kolonics
Zoltan Kolonics has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5639905Abstract: Process for the preparation of N-phenyl-N-methoxyacetyl-DL-alanine methyl ester derivatives of the formula (I). ##STR1## wherein R is a C.sub.1-4 alkyl residue; and n is a cardinal number between from 1 to 3,which comprises reacting an N-methoxyacetyl derivative of the formula (II). ##STR2## wherein R and n are as defined above, with a stoichiometric amount of an alkaline metal alkoxide, at a temperature between 80.degree. C. and 150.degree. C., until completion of the removal of the alkanol present in the system, then reacting the thus obtained alkaline metal salt of the compound of formula (II) directly or after isolation with a methyl DL-x-halopropionate.Type: GrantFiled: September 13, 1994Date of Patent: June 17, 1997Assignee: Nitrokemia IpartelepekInventors: Lajos Nagy, Jeno Pelyva, Pal Agocs, Csaba Soptei, Judit Benczik nee Pasztor, Zoltan Kolonics, Sandor Balint, Dezso Sebok, Jolan Cseke, Tibor Kranitz, Laszlo Legradi
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Patent number: 5055125Abstract: Herbicidal compositions comprising a substituted thiolcarbamate derivative corresponding to the formula (I) wherein R.sub.1, R.sub.2 and R.sub.3 are selected independently from alkyl groups having 1 to 4 carbon atoms and/or a chloroacetanilide derivative corresponding to the formula (II) wherein R.sub.4 and R.sub.5 are hydrogen or alkyl group having 1 to 4 carbon atoms, identical or different, R.sub.6 is an alkoxyalkyl group corresponding to the formula --R.sub.7 --O--R.sub.8 in which R.sub.7 and R.sub.8 are selected from alkyl groups having 1 to 4 carbon atoms and, as an antidote, a thiocarbamic acid derivative corresponding to the formula (III) wherein R.sub.9 and R.sub.10 independently from each other are alkyl or alkenyl group having 1 to 4 carbon atoms, or R.sub.9 and R.sub.Type: GrantFiled: April 10, 1990Date of Patent: October 8, 1991Assignee: Nitrokemia IpartelepekInventors: Gyorgy Matolcsy, Antal Gimesi, Antalne Tombor, Barna Bordas, Janosne Benczik, Zoltan Kolonics, Csaba Soptei, Sandor Boros, Agota Kener, Denzso Sebok, Geza Szabo, Imre Varga
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Patent number: 4983764Abstract: The invention relates to an improvement of a process for preparing N-phosphonomethyl-glycine by oxydation of N-phosphonomethyl-imino-diacetic acid in an aqueous sulphuric acidic medium with hydrogen peroxide.A characteristic feature is using a waste acid liquor as reaction medium formed as aqueous sulphuric acid and obtained after the separation of N-phosphonomethyl-glycine when carrying out oxydation. This solution is optionally diluted with water until a concentration of 12-18 weight % of sulphuric acid and 3-5 weight % of N-phosphonomethyl-glycine.Type: GrantFiled: October 24, 1989Date of Patent: January 8, 1991Assignee: Nitrokemia IpartelepekInventors: Jeno Pelyva, Laszlo Lendvai, Sandor Balint, Zoltan Kolonics, Csaba Soptei, Sandor Laszlo, Bela Karacsonyi, Janosne Benczik, Csaba Kayos, Sandor Silye
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Patent number: 4968840Abstract: A process for preparing methoxyacetic acid by reacting monochloroacetic acid with sodium methylate, in a methanolic solvent at increased temperature. Methanol is distilled off and methoxyacetic acid methylester is added to the residue. The stirrable mixture is contacted with dry hydrochloric acid gas. The methoxyacetic acid methylester is distilled off after removing the precipitated sodium chloride, to recover the desired product.Type: GrantFiled: July 13, 1989Date of Patent: November 6, 1990Assignee: Nitrokemia IpartelepekInventors: Pal Agocs, Lajos Nagy, Jeno Pelyva, Laszlo Legradi, Zoltan Kolonics, Csaba Soptei
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Patent number: 4931585Abstract: The invention relates to the preparation of N-phosphono-methyl-imino-diacetic acid from the calcium salt of imino-diacetic acid in a simplified synthesis. The process comprises in that the imino-diacetic acid calcium salt is heated with concentrated hydrochloric acid in a molar ratio of 2-3:1 at a temperature between 50.degree.-100.degree. C., the obtained imino-diacetic acid hydrogen-chloride is separated then dissolved in water and is reacted with phosphorous acid in a molar ratio of 1.0-1.2:1 calculated for imino-diacetic acid hydrogen chloride and with the aqueous solution of formaldehyde in a molar ratio of 1.0-1.4:1 under stirring, and the obtained product is isolated.Type: GrantFiled: February 2, 1989Date of Patent: June 5, 1990Assignee: Nitrokemia IpartelepekInventors: Jeno Pelyva, Csaba Soptei, Zoltan Kolonics, Bela Karacsonyi, Sandor Balint, Janosne Benczik, Csaba Kayos, Laszlo Lendvai, Sandor Laszlo
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Patent number: 4859772Abstract: The present invention relates to a process for the preparation of 3-isopropyl-benzo-2-thia-1,3-diazinone-(4)-2,2-dioxide which comprises preparing isopropyl sulfamoyl chloride in one step by reacting N,N'-diisopropyl-urea with phosphorus trichloride and chlorine in the presence of oleum and sulfuric acid and condensing the so obtained isopropyl sulfamoyl chloride at room temperature without any solvent in the presence of an excess of N,N-diethyl aniline with anthranylic acid methyl ester and subjecting the thus obtained N-isopropyl-N'-o-carbomethoxy-phenyl-sulfamide to cyclization in the presence of sodium methylate, extracting the obtained crude 3-isopropyl-benzo-2-thia-1,3-diazinone-(4)-2,2-dioxide with a mixture of methanol and water and after adding water to the aqueous-methanolic mixture and sedimenting the contaminations isolating a product of high purity.Type: GrantFiled: July 15, 1987Date of Patent: August 22, 1989Assignee: Nitro Kemia IpartelepekInventors: Jeno Pelyva, K. Istvan Vecsey, Zoltan Kolonics, Laszlo Legradi, Lajos Nagy, Andras Horvath, Ferenc Fodor, deceased, Csaba Soptei, Dezso Sebok, Elemer Tomordi, Laszlo Lendvai, Bela Karacsonyi, Erzsebet Dioszegi
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Patent number: 4445927Abstract: This invention relates to herbicidal compositions containing N-(phosphonomethyl)-glycine or a non-phytotoxic salt thereof, in combination with 2,4-dichlorophenoxyacetic acid or .alpha.-naphthylacetic acid or non-phytotoxic salt of these compounds.By using the compositions according to the invention the herbicidally effective amount of N-(phosphonomethyl)-glycine can considerably be reduced in comparison with the commercially available compositions, which contain N-(phosphonomethyl)-glycine as an only active ingredient.Type: GrantFiled: August 25, 1981Date of Patent: May 1, 1984Assignees: Nitrokemia Ipartelepek, Novenyvedelmi Kutato IntezetInventors: Antal Gimesi, Jozsef Baracskai, Ferenc Fodor, Antal Gaal, Andras Horvath, Zoltan Kolonics
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Patent number: 4399306Abstract: The invention relates to an improved method for the preparation of a 2',6'-dialkyl-N-alkoxymethyl-2-chloro-acetanilide compound of the general formula (I), ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are identical or different and stand for straight-chained or branched C.sub.1-4 alkyl groups.According to the invention a dialkyl aniline of the general formula (II), ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, is treated with aqueous formaldehyde solution in an apolar solvent at a temperature of 30.degree. to 80.degree. C., the solution of the resulting oxymethyl derivative formed with said apolar solvent is separated from the aqueous formaldehyde solution at an elevated temperature and then dehydrated, the resulting azomethine derivative is reacted with chloroacetyl chloride in the same apolar solvent medium, the resulting chloromethyl compound is reacted with an alcohol of the general formula (V),R.sub.3 -OH (V)wherein R.sub.Type: GrantFiled: December 18, 1979Date of Patent: August 16, 1983Assignees: Nitrokemia Ipartelepek, Nehezvegyipari Kutato Intezet, Mta Mezogazdasagi Kutato IntezetInventors: Kornelia Domjan nee Pinter, Gyorgy Huszak, Zoltan Kolonics, Laszlo Lendvai, Jeno Pelyva, Endre Sumegi, Elemer Tomordi, Bela Gyorfi, Laszlo J. Szabo, Andras Haas, Miklos Kovacs, Taszlo Kulcsar, Miklos Nadasy, Balint Nagy, Andras Vass, Ervin Vertesi