| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 570190000 | Processes of preparing, purifying, or recovering benzene ring containing compound | 24 |
| 20090247795 | Method of Synthesizing 9-Aryl-10-Iodoanthracene Derivative and Light-Emitting Material - A method of efficiently synthesizing 9-aryl-10-iodoanthracene from 9-arylanthracene by a simple procedure is provided. By mixing an iodinating agent that is a substance having a structure of an amide group in which nitrogen of the amide group and iodine are directly bonded to each other, an acid, and 9-arylanthracene, iodine is introduced into the 10-position of 9-arylanthracene, whereby 9-aryl-10-iodoanthracene can be synthesized. | 10-01-2009 |
| 20110224467 | Bromination of Telomer Mixtures Derived From Toluene and Styrene - This invention relates to novel and useful toluene and styrene derived telomer distributions, such distributions being desirable substrates for the preparation of brominated flame retardants. | 09-15-2011 |
| 20130281745 | PERFLUOROALKYLATED LIGNIN AS A CATALYST SUPPORT WITH VARYING PHASE BEHAVIOR - Multi-phase biopolymer catalyst support systems, methods of synthesizing a biopolymer material for use in a multi-phase biopolymer catalyst support system, and methods for catalyzing reactions with a multi-phase biopolymer catalyst support system are described. | 10-24-2013 |
| 20160152533 | METHOD FOR THE PREPARATION OF TRICHLOROMETHYL-GROUP-SUBSTITUTED BENZENE | 06-02-2016 |
| 570191000 | Preparing acyclic haloalkyl group containing compound | 2 |
| 20090023964 | PROCESS FOR THE PREPARATION OF INTERMEDIATES - The present invention provides a process for the production of intermediate compounds of formula (I), wherein the substituents are as defined herein. The process comprises reacting a substituted aniline with aqueous HX, followed by removal of water by azeotropic distillation and diazotization and pyrolysis with an organic nitrite at elevated temperatures in the absence of a copper catalyst. Alternatively, gaseous HX can be used to substitute aqueous HX in the process. Consequently, a step of water removal by azeotropic distillation can be eliminated. The intermediate compounds of formula I are suitable as intermediates in the preparation of herbicidally active 3-hydroxy-4-aryl-5-oxopyrazoline derivatives. | 01-22-2009 |
| 570196000 | Halogenation of acyclic carbon | 1 |
| 20100168484 | Method for Producing Chlorinated Aromatic Compound - [PROBLEMS] To provide a simpler method for producing a high-quality chlorinated aromatic hydrocarbon (e.g., cumylchloride), which can be used as a cationic polymerization initiator. | 07-01-2010 |
| 570201000 | Oxygen containing organic compound reactant | 2 |
| 20100268003 | PROCESS FOR INCREASING PURITY OF SOLID BROMINATED FLAME RETARDANTS DURING PREPARATION - Processes for preparing brominated aromatic flame retardant having a reduced content of occluded free bromine are described. The processes comprise subdividing, during bromination of an aromatic compound, solid particles that form in a bromination reaction mixture in which an excess of liquid bromine and a Lewis acid bromination catalyst are present, said subdividing taking place within the confines of said reaction mixture. Subdivision is effected by grinding, milling, or sonication. | 10-21-2010 |
| 20140364659 | PROCESS FOR THE CONVERSION OF ISOMERIC MIXTURE OF DICHLORODIPHENYL SULFONES TO CHLOROBENZENE - The invention relates to a process for the single step conversion of isomeric mixture of dichlorodipheriyi sulfones to chlorobenzene. The invention further relates a process of using dilute sulfuric acid and re-circulating the dilute sulfuric acid. | 12-11-2014 |
| 570204000 | Dehalogenation or dehydrohalogenation | 3 |
| 20100094067 | METHOD OF PREPARING MONO-IODO BENZENE THROUGH TRANSIODINATION - The present invention relates to a method of preparing mono-iodo benzene with a transiodination reaction, and more preferably a method of preparing mono-iodo benzene including a step of performing transiodination of a reactant including benzene and at least a multi-iodo benzene selected from the group consisting of di-iodo benzene and tri-iodo benzene with an HY or HBeta type of zeolite having a Si/Al molar ratio of 10 to 100 as a catalyst. The method of the present invention has an advantage that iodine is recovered from by-products including m-di-iodo benzene, o-di-iodo benzene, and tri-iodo benzene obtained in the process of preparing p-di-iodo benzene, thereby resulting in minimizing the loss of iodine. | 04-15-2010 |
| 20100137659 | PROCESS FOR THE SYNTHESIS OF 2,2',6-TRIBROMOBIPHENYL - A process for the synthesis of 2,2′,6-tribromobiphenyl. | 06-03-2010 |
| 20130116484 | CATION-EXCHANGED ZEOLITE CATALYST AND PROCESS FOR PRODUCING MONO-IODO BENZENE THROUGH TRANSIODINATION BY USING IT - The present invention relates to a cation-exchanged zeolite catalyst for an transiodination and a process for producing mono-iodo benzene by using it. Particularly, the cation-exchanged zeolite catalyst has a molar ratio of Si/Al from 5 to 100 and is ion-exchanged with an alkali metal or an alkaline earth metal in range of 2% to 50% of ion exchange capacity. | 05-09-2013 |
| 570206000 | Bonding halogen directly to benzene ring | 11 |
| 20090043139 | Process for the Synthesis of Arylfluorenes and Analogues thereof - A process is provided for the synthesis of a compound of formula (I): | 02-12-2009 |
| 20100185031 | MANUFACTURING PROCESS FOR IODINATED AROMATIC COMPOUNDS - Disclosed is a method for preparing an iodinated aromatic compound. More specifically, disclosed is a method of preparing an iodinated aromatic compound by iodinating an aromatic compound in the presence of oxygen over a zeolite catalyst, in which the aromatic compound and its monoiodo compound, as raw materials, are allowed to react with iodine. In comparison with a method in which only the aromatic compound is used as a raw material without adding the monoiodo compound, the disclosed method can increase the productivity of diiodo compounds and the selectivity to a p-diiodo compound and, at the same time, suppress side reactions, thus lengthening the life span of the catalyst. | 07-22-2010 |
| 20100222617 | METHOD OF PREPARING IODINATED AROMATIC COMPOUNDS - The present invention relates to a method of preparing iodinated aromatic compounds, and more preferably a method of preparing iodinated aromatic compounds comprising a step of iodinating a reactant including an aromatic compound, a di-iodo aromatic compound or water, and iodine (I2) in the presence of a zeolite catalyst and oxygen. The method of the present invention has an advantage that by iodination of a reactant including the aromatic compound, and the di-iodo aromatic compound or water in the presence of the zeolite catalyst and oxygen, the temperature of the iodinating reactor can be controlled reliably and constantly, thereby resulting in improved productivity per unit weight of catalyst and inhibition of a side reaction in accordance with suppression of producing impurities. In addition, the productivity of the iodinated aromatic compound, preferably the di-iodo aromatic compound, more preferably a p-di-iodo aromatic compound can be improved, and thus can be widely used in the preparation of a di-iodo aromatic compound such as a p-di-iodo aromatic compound. | 09-02-2010 |
| 20110245550 | PROCESS FOR PREPARING IODINATED AROMATIC COMPOUNDS - The present invention relates to a process for preparing iodinated aromatic compounds. Particularly, the present invention comprises the step of performing the iodination of a non-halogenated aromatic compound, a monoiodo aromatic compound, a diiodo aromatic compound, and iodine in the presence of a zeolite catalyst under oxygen atmosphere. | 10-06-2011 |
| 20120059203 | MANUFACTURING PROCESS FOR IODINATED AROMATIC COMPOUNDS - Disclosed is a method for preparing an iodinated aromatic compound. More specifically, disclosed is a method of preparing an iodinated aromatic compound by iodinating an aromatic compound in the presence of oxygen over a zeolite catalyst, in which the aromatic compound and a monoiodo analog of the aromatic compound, or a monoiodo aromatic compound, as raw materials, are allowed to react with iodine. In comparison with a method in which only the aromatic compound is used as a raw material without adding the monoiodo compound, the disclosed method can increase the productivity of diiodo compounds and the selectivity to a p-diiodo compound and, at the same time, suppress side reactions, thus lengthening the life span of the catalyst. | 03-08-2012 |
| 20120065438 | Process for Syntheis of 10,10-Dibromo-9,9-dianthracene - This invention, which belongs to the field of organic electroluminesent materials synthetic technology, involves synthetic method of 10,10′-Dibromo-9,9′-bianthryl. The synthetic method is to use 9,9′-bianthryl as raw material, chlorinated hydrocarbon as solvent, bromide as bromine agent and react. This method not only produces no environmental pollution, but also enjoys high yield, therefore, it is suitable for industrial production. | 03-15-2012 |
| 20120116132 | Preparation of High Assay Decabromodiphenylalkane Product With Low Occluded Free Bromine Content - A high assay decabromodiphenylalkane product in which the alkylene group contains in the range of about 1-10 carbon atoms and has an occluded free bromine content of <500 ppm is prepared. The process comprises brominating, in a liquid phase reaction mixture, at least one α,ω-diphenylalkane having an alkylene group of 1-10 carbon atoms, with a limited excess of bromine, in the presence of an aluminum, aluminum halide or a ferric halide catalyst in which the original halogen atoms of such halides are chlorine atoms, bromine atoms, or both. The limited excess of bromine is such that the maximum excess amount of bromine used in conducting the reaction is about 20 mole % relative to the stoichiometric amount required to convert the amount of α,ω-diphenylalkane used to decabromodiphenylalkane. Crude high assay decabromodiphenylalkane product is prepared without use of heat treatment, oven ageing, or grinding or other forms of pulverization. | 05-10-2012 |
| 20120172640 | CATION-EXCHANGED ZEOLITE CATALYST AND PROCESS FOR PRODUCING MONO-IODO BENZENE THROUGH TRANSIODINATION BY USING IT - The present invention relates to a cation-exchanged zeolite catalyst for an transiodination and a process for producing mono-iodo benzene by using it. Particularly, the cation-exchanged zeolite catalyst has a molar ratio of Si/Al from 5 to 100 and is ion-exchanged with an alkali metal or an alkaline earth metal in range of 2% to 50% of ion exchange capacity. | 07-05-2012 |
| 570207000 | Chlorination | 3 |
| 20100234652 | Process for Preparing Chloro-and Bromoaromatics - The present invention relates to a novel process for preparing chloro- or bromoaromatics of the formula (II) by diazotizing the formula (I) by means of sodium nitrite or potassium nitrite in the presence of aqueous hydrochloric or hydrobromic acids and then reacting with an iron(II) or iron(III) compound, optionally in the presence of additional amounts of hydrogen chloride or hydrogen bromide or alkali metal or alkaline earth metal chlorides or bromides. | 09-16-2010 |
| 570208000 | Catalyst utilized | 2 |
| 20090005619 | HIGH SHEAR PROCESS FOR THE PRODUCTION OF CHLOROBENZENE - Use of a high shear mechanical device incorporated into a process for the production of chlorobenzene is capable of decreasing mass transfer limitations, thereby enhancing the chlorobenzene production process. A system for the production of chlorobenzene from benzene and chlorine, the system comprising a reactor and an external high shear device, the outlet of which is fluidly connected to the inlet of the reactor; the high shear device capable of providing a emulsion of chlorine gas bubbles within liquid benzene | 01-01-2009 |
| 570210000 | Metal halide containing catalyst | 1 |
| 20110207976 | PROCESS FOR PRODUCING P-DICHLOROBENZENE - To provide a novel process for producing p-dichlorobenzene satisfying both of high selectivity of p-dichlorobenzene and high conversion of chlorine at the same time. | 08-25-2011 |
| 570211000 | Purification or recovery | 2 |
| 20120059204 | METHOD FOR PURIFYING ORGANIC SOLVENT - The present invention relates to a method for purifying a compound selected from a compound represented by the following general formula [1] or [2], a saturated aliphatic hydrocarbon having no substituent, or kerosene: | 03-08-2012 |
| 20130116485 | PROCESS FOR SEPARATION BY SELECTIVE ADSORPTION ON A SOLID CONTAINING A ZEOLITE WITH A CRYSTALLINE STRUCTURE ANALOGOUS TO IM-12 - A process for adsorption separation uses a solid IM-12 type adsorbent to separate a molecular species from any feed. | 05-09-2013 |
