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| Number | Title | Issue Date |
| 7210689 | Tool organizer A tool organizer is disclosed. According to one embodiment, the tool organizer comprises a frame and a plurality of wheels attached to the frame. The tool organizer also includes a tool storage structure supported by the frame. The tool storage structure comprising ... | 05/01/2007 |
| 7005553 | Method for the nitration of phenolic compounds A method for the regioselective ortho-directed nitration of phenolic compounds useful for the preparation of ortho-nitro-phenols according to formula (I) is described. ... | 02/28/2006 |
| 6861527 | Nitration in a static micromixer The present invention relates to a novel process for the nitration of organic compounds, preferably of aromatic and heteroaromatic compounds, using nitrating reagents which are known from the literature and new types of nitrating reagents. ... | 03/01/2005 |
| 6392097 | Process for the preparation of derivatives of octafluoro-[2,2] paracylophane Processes for the preparation of parylene dimers, and more particularly to processes for the preparation of derivatives of octafluoro-[2,2]paracylophane, otherwise known as AF4.... | 05/21/2002 |
| 6278022 | Process for the preparation of insecticidal phenylhydrazine derivatives Disclosed herein is an improvement in a method for making compounds having the structural formulae (I) or (II): ##STR1## wherein: X is a) phenyl; lower phenylalkoxy; phenoxy; or benzyl; or b) one substituent from group a) and one or more substituents sele... | 08/21/2001 |
| 6160179 | Method of producing 4-nitro-m-phenylenediamine sulfate A method of manufacture of 4-nitro-m-phenylenediamine sulfate is taught. The resultant compound is useful in the dyeing of keratinic fibers, particularly, human hair. It exhibits reduced toxicity and potential for damage to such fibers, and is easier to r... | 12/12/2000 |
| 5981795 | Method for the N-denitration of N-nitro-dinitroaniline in a homogeneous phase A method of purifying dinitroaniline of the general formula: ##STR1## in which: R is linear or branched C1 -C6 alkyl, C4 -C6 cycloalkyl, C1 -C4 monohaloalkyl or C1 -C4... | 11/09/1999 |
| 5922913 | Process for nitrating aromatic amines Disclosed is a process of nitrating or dinitrating an aromatic amine compound that involves reacting the aromatic amine and nitric acid in the presence of acetic acid such that the molar ratio of the aromatic amine compound to acetic acid is from about 1:... | 07/13/1999 |
| 5907062 | Continuous process for the dinitration of aromatic substrates A continuous process for the dinitration of alkyl-substituted derivatives of phenol and aniline, using nitric acid substantially free of sulphuric acid, characterized in which the dinitration is conducted in a single step in a tubular reactor in the prese... | 05/25/1999 |
| 5136041 | Synthesis of 7-amino-4,6-dinitrobenzofuroxan The compound 7-amino-4,6-dinitrobenzofuroxan is prepared by reacting 2,3,4,6-tetranitroaniline in a solvent with aqueous sodium azide under controlled exotherm conditions.... | 08/04/1992 |
| 5081303 | Co-production of an aromatic monoamine and an aromatic diamine directly from benzene or a benzene derivative through controlled nitration and reduction A two-stage process for the co-production of aniline and m-phenylenediamine where, in the first stage, benzene, nitric acid, and sulfuric acid are reacted in a liquid phase to produce in greater amounts nitrobenzene (approximately 70%) and m-dinitrobenzen... | 01/14/1992 |
| 4723040 | Process for making N-mono-substituted p-phenylenediamines A process for preparing an N-mono-substituted-p-phenylenediamine by reacting the corresponding p-nitroso-N-mono-substituted aniline compound with a primary or secondary alcohol in the presence of a base.... | 02/02/1988 |
| 4675445 | Process for elimination N-nitrosamines from N-nitrosamine-containing compositions A process for eliminating N-nitrosamines, particularly N,N-dialkyl-N-nitrosamines and N-alkyl-N-aryl-N-nitrosamines from N-nitrosamine containing compositions through the addition of organic carboxylic acid halides. The process eliminates N-nitroso compou... | 06/23/1987 |
| 4638090 | Processes for the preparation of nitrosamine-free N,N-disubstituted nitroaromatic amines and for the stabilization of these compounds against the formation of nitrosamines Processes for the preparation of nitrosamine-free N,N-disubstituted nitroaromatic amines by degradation of their nitrosamine components formed during their preparation, and by stabilization of the products against renewed formation of nitrosamines, by tre... | 01/20/1987 |
| 4621157 | Nitration processes The present invention relates to improvements in processes of preparing dinitrated aromatic compounds, particularly dinitrated aniline and dinitrated substituted aniline compounds, employing relatively dilute and then more concentrated nitric acid as the ... | 11/04/1986 |
| 4618714 | Process for preparation of 3,3'- or 3,4'-diaminobenzophenones Preparation of 3,3'- or 3,4'-diaminobenzophenone by nitrating a chloronitrobenzophenone mixture obtained by the Friedel-Crafts reaction between 3- or 4-nitrobenzoyl chloride and chlorobenzene, and catalytically reducing and dechlorinating the resulting ch... | 10/21/1986 |
| 4600797 | Process for the preparation of nitroaminobenzenes Process for the preparation of a nitroaminobenzene by nitrating an aminobenzene which is protected at the nitrogen wherein the nitration is carried out by the simultaneous combination of nitric acid and the aminobenzene to be nitrated, in the presence of ... | 07/15/1986 |
| 4556738 | Process for preparation of 3,3'- or 3,4'-diamino benzophenone 3,3'- or 3,4'-diamino benzophenone is prepared by catalytically reducing and dehalogenating, in the presence of a reduction catalyst and a dehydrohalogenation agent, a benzophenone compound or benzophenone compounds of the general formula ##STR1## ... | 12/03/1985 |
| 4552981 | Process for the production of 5-nitro-acet-2,4-xylidine The present invention is directed to a process for preparing 5-nitro-acet-2,4-xylidine comprising: (a) dissolving acet-2,4-xylidine in an aqueous sulfuric acid solution, said aqueous solution containing from 86 to 92% by weight of sulfuric acid, the weigh... | 11/12/1985 |
| 4532353 | Substituted benzotrifluoride compounds as chemical intermediates and a process for their preparation This invention pertains to two substituted benzotrifluoride compounds useful as chemical intermediates for a new class of 2-haloacetanilide herbicides and a process for making these intermediates. The process generally involves nitration and reduction of ... | 07/30/1985 |
| 4531013 | Preparation of a diaminotetranitronaphthalene A new compound 2,6-diamino-1,4,5,8-tetranitronaphthalene is disclosed and a method of preparation thereof. The new compound is useful as a high energy, high density explosive.... | 07/23/1985 |
| 4370502 | Process for producing p-nitroaniline A process for producing p-nitroaniline, which comprises nitrating an -methylbenzalaniline of the formula ##STR1## wherein R represents an alkyl group having 1 to 5 carbon atoms, and n is 0 or 1, with nitric acid in the presence of a halogenate... | 01/25/1983 |
| 4234470 | Catalytic nitration of aromatic compounds A process for the continuous catalytic vapor-phase mononitration of aromatic compounds, especially benzene, using as the catalyst an -fluorosulfonic acid polymer admixed with a complement inert to the nitration reaction and dimensionally stable und... | 11/18/1980 |
| 4174400 | Anthelmintic benzimidazoles Benzimidazole compounds are disclosed which are substituted at the 2-position with a loweralkoxy carbonylamino group and at the 5-position with a halogenated loweralkenyl group or a halogenated loweralkoxy, loweralkylthio, loweralkylsulfinyl or loweralkyl... | 11/13/1979 |
| 4136117 | Preparation of 2,6-dinitroanilines This invention relates to a novel process for the preparation of N-alkylated and N,N-dialkylated 2,6-dinitroaniline herbicidal agents.... | 01/23/1979 |
| 4134917 | Method for the denitrosation of organic nitrosamines The invention relates to a method for the denitrosation of organic nitrosamines with aliphatic and cycloaliphatic ketones or aliphatic aldehyes in the presence of a strong acid, and optionally an inert organic solvent.... | 01/16/1979 |
| 4124639 | N-alkoxyalkyl-2,6-dinitroaniline herbicides The invention is substituted 2,6-dinitroaniline compounds and preemergence herbicidal methods and compositions employing the substituted 2,6-dinitroaniline compounds.... | 11/07/1978 |
| 4112005 | Process for the preparation of mononitro-aromatic compounds The present invention relates to an improved continuous process for the preparation of mononitro-aromatic compounds which comprises (1) nitrating a reactive aromatic compound in the absence of sulphuric acid until mono-nitration is essentially complete, s... | 09/05/1978 |
| 4020052 | Treatment of aromatic amines with gas mixtures derived from the oxidation of ammonia to effect diazotization/coupling 1,3-Diaryl triazenes, e.g., 1,3-diphenyltriazene, intermediates in the synthesis of aromatic diamines, e.g., p-phenylenediamine, are prepared by catalytically oxidizing ammonia, and subsequently the resulting nitric oxide, with a gas comprising diluted mo... | 04/26/1977 |
