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公开(公告)号：DE2257924A1
公开(公告)日：1974-06-20
申请号：DE2257924
申请日：1972-11-25
Applicant: BASF AG
Inventor： SCHWEN ROLAND DR , WEBER THEODOR
IPC: G01N9/16
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公开(公告)号：DE502004004109D1
公开(公告)日：2007-07-26
申请号：DE502004004109
申请日：2004-09-24
Applicant: BASF AG
Inventor： REUTEMANN WERNER , WEBER THEODOR , ROSS KARL-HEINZ , JULIUS MANFRED
IPC: C07C209/86 , C07C209/16 , C07C209/90 , C07C211/04
Abstract: The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream ( 10 ) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column ( 1 ), the remaining components of the product stream obtained as bottoms ( 12 ) are fed to a second column ( 2 ). Trimethylamine ( 14 ) is separated off in the second column ( 2 ) by extractive distillation with introduction of water. The further components of the product stream obtained as bottoms ( 15 ) from the second column ( 2 ) are fed to a third column ( 3 ), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column ( 4 ). To avoid corrosion alkali metal hydroxide is added to the second or third column ( 3 ).
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公开(公告)号：BRPI0413792A
公开(公告)日：2006-11-07
申请号：BRPI0413792
申请日：2004-09-24
Applicant: BASF AG
Inventor： REUTEMANN WERNER , WAMBSGANSS ROLF , POPLOW FRANK , WEBER THEODOR , ROSS KARL-HEINZ , JULIUS MANFRED
IPC: C07C209/16 , C07C211/04
Abstract: The invention relates to a process for preparing methylamines by gas-phase reaction of methanol and ammonia as starting materials at a pressure in the range from 15 to 30 bar in the presence of heterogeneous catalyst. The starting materials are vaporized in one or more heat exchangers (1, 2, 3), superheated to produce a feed gas stream and subsequently fed into a reactor (4), with the mixing of the starting materials being able to be carried out in the feed stream to one of the heat exchangers (1, 2, 3) or at any desired position in a heat exchanger (1, 2, 3). A product gas stream comprising monomethylamine, dimethylamine and trimethylamine and also reaction by-products is taken off from the reactor (4). To control the reactor inlet temperature of the starting materials to a temperature in the range from 360° C. to 370° C., all or some of the feed gas stream or the product gas stream is passed through an adjustable valve (5) in order to vary the pressure and thus the condensation temperature.
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公开(公告)号：ES2235972T3
公开(公告)日：2005-07-16
申请号：ES00972657
申请日：2000-08-31
Applicant: BASF AG
Inventor： BUSCH RALPH , KNEUPER HEINZ-JOSEF , WEBER THEODOR , MULLER WINFRIED , STAMM ARMIN , HENKELMANN JOCHEM
Abstract: Procedimiento para la purificación de cloruros de ácido carboxílico que se han fabricado mediante reacción de ácidos carboxílicos con fosgeno o cloruro de tionilo en presencia de un aducto del catalizador y se han separado de la fase que contiene el aducto del catalizador, caracterizado porque los cloruros de ácido carboxílico se tratan con un hidrohalogenuro de amidas del ácido carboxílico de fórmula general (I) en la que R1 representa hidrógeno o alquilo C1 a C3; R2 y R3 significan independientemente entre sí alquilo C1 a C4 o R2 y R3 juntos significan una cadena alquileno C4 o C5, en la que la solubilidad mutua del cloruro de ácido carboxílico y del hidrohalogenuro de la amida del ácido carboxílico (I) es baja y que el cloruro de ácido carboxílico así impurificado se aísla mediante la separación de la fase del hidrohalogenuro de la amida del ácido carboxílico.
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公开(公告)号：DE50009431D1
公开(公告)日：2005-03-10
申请号：DE50009431
申请日：2000-08-31
Applicant: BASF AG
Inventor： BUSCH RALPH , KNEUPER HEINZ-JOSEF , WEBER THEODOR , MUELLER WINFRIED , STAMM ARMIN , HENKELMANN JOCHEM
Abstract: Process for the purification of carbonyl chlorides which have been prepared by reacting carboxylic acids with phosgene or thionyl chloride in the presence of a catalyst adduct, in which the carbonyl chlorides are treated with a hydrohalide of carboxamides of the formula (I)in which R is hydrogen or C1- to C3-alkyl; R and R independently of one another are C1- to C4-alkyl, or R and R together are a C4- or C5-alkylene chain, and the carbonyl chloride purified in this way is isolated by separation off from the carboxamide hydrohalide phase.
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Patent Agency Ranking
公开(公告)号：DE10302408A1
公开(公告)日：2004-07-29
申请号：DE10302408
申请日：2003-01-21
Applicant: BASF AG
Inventor： CIPRIAN JUERGEN , MAURER STEPHAN , MODES GERD , WEBER THEODOR
Abstract: Removing phosgene from a gas stream comprises hydrolysis with water vapor in the presence of active carbon having a water absorption of at least 4 g/100 g at an air humidity of 10 g/m3 and at least 15 g/100 g at an air humidity of 15 g/m3.
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公开(公告)号：ES2205829T3
公开(公告)日：2004-05-01
申请号：ES99925022
申请日：1999-05-21
Applicant: BASF AG
Inventor： WEYER HANS-JURGEN , STAMM ARMIN , WEBER THEODOR , HENKELMANN JOCHEM
Abstract: The present invention relates to a process for preparing alkyl, alkenyl and alkynyl chlorides from alcohols by reaction with a chlorinating agent in the presence of a catalyst, wherein the catalyst is a urea compound.
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公开(公告)号：AU2003249938A1
公开(公告)日：2004-02-02
申请号：AU2003249938
申请日：2003-07-03
Applicant: BASF AG
Inventor： HENKELMANN JOCHEM , WEBER THEODOR , ROHDE THORSTEN , BUSCH RALPH
IPC: C07C273/18 , C07C275/06
Abstract: The invention relates to a process for the preparation of tetrasubstituted ureas by reaction of the corresponding amines with phosgene in the presence of an aqueous inorganic base at a temperature in the range from 0 to 150° C., which comprises: feeding the corresponding amine, the phosgene and the aqueous inorganic base on average continuously to the reaction apparatus, forming a two-phase system in the reaction apparatus through the choice of the tetrasubstituted ureas to be prepared, through the mixing ratios of the substances and substance mixtures to be fed in, through the temperature during the reaction and, where appropriate, through the feed of an organic solvent which is not completely miscible with water, and discharging the reaction mixture on average continuously from the reaction apparatus.
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公开(公告)号：HU0301077A2
公开(公告)日：2003-08-28
申请号：HU0301077
申请日：2001-02-28
Applicant: BASF AG
Inventor： BUSCH RALPH , HENKELMANN JOCHEM , KNEUPER HEINZ-JOSEF , STAMM ARMIN , WEBER THEODOR
Abstract: The invention relates to a method for producing chlorocarboxylic acid chlorides of formula (I), wherein R and R , independently from one another, mean a hydrogen atom, an organic radical containing carbon, a halogen, a nitro or cyano group and Y means an alkylene chain having 1 to 10 carbon atoms in the chain which is unsubstituted or is substituted by organic radicals that contain carbon, by halogen, nitro and/or cyano groups, whereby the alkylene chain can be interrupted by an ether-, thioether-, tertiary amino- or keto group, whereby the organic radicals of Y and/or R and/or R can be connected to one another and thereby form a non-aromatic system, whereby said radicals contain carbon, by converting a lactone of formula (II), wherein R , R and Y have the aforementioned meanings, using a hydrogen chloride and phosgene in the presence of a catalyst. Hydrogen chloride is added before and/or while phosgene is added. The hydrogen chloride is only introduced at a temperature of at least 60 DEG C. A pyridine compound is used as the catalyst.
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公开(公告)号：ES2174527T3
公开(公告)日：2002-11-01
申请号：ES98963492
申请日：1998-11-21
Applicant: BASF AG
Inventor： WEYER HANS-JURGEN , STAMM ARMIN , WEBER THEODOR , HENKELMANN JOCHEM
Abstract: The present invention provides process for the preparation of chlorocarbonyl chlorides of the formula IwhereR1 is for example hydrogen or C1- to C20-alkyl andY is for example a saturated or mono- or polyolefinically unsaturated C2-C8-alkylene chain,by reacting lactones with a chlorinating agent in the presence of a urea compound.
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