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公开(公告)号：CA2350490A1
公开(公告)日：2000-06-02
申请号：CA2350490
申请日：1999-11-22
Applicant: BASF AG
Inventor： EBEL KLAUS , EIERMANN MATTHIAS , TRAGUT CHRISTIAN
IPC: C07C303/16 , C07C309/04
Abstract: The invention relates to a method of producing alkane sulfonic acid, comprising the following steps: (a) oxidizing alkyl mercaptans and/or dialkyldisulfides and/or dialkylpolysulfides having three to nine sulfur ato ms with nitric acid to give alkane sulfonic acids, water, nitrogen oxides and further by-products, (b) regenerating the nitrogen oxides obtained in step ( a) with oxygen to give nitric acid and feeding the nitric acid to step (a). Ste ps (a) and (b) are carried out in separate reaction spaces.
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公开(公告)号：DE19837211A1
公开(公告)日：2000-02-24
申请号：DE19837211
申请日：1998-08-17
Applicant: BASF AG
Inventor： KINDLER ALOIS , BRUNNER MELANIE , TRAGUT CHRISTIAN , HENKELMANN JOCHEM
IPC: C07B61/00 , C07C29/42 , C07C33/044
Abstract: In the production of alkyne-diols by reaction of ketones with acetylenes in presence of potassium prim. and/or sec. alcoholate, the stoichiometric ratio of the reactants is adjusted so that gel-like alkynol/base adducts with a spherical surface are obtained and the reaction mixture remains able to be stirred throughout. A process for the production of alkyne-diols by reaction of ketones with acetylenic hydrocarbons in organic solvent in presence of a base containing potassium prim. and/or sec. alcoholates, resulting in the formation of adducts of alkynemono- and/or alkynedi-ols and base which are precipitated from the reaction mixture. In this process, the stoichiometric ratio of the reactants is such that gel-like adducts with a spherical surface are obtained and the reaction mixture remains able to be stirred throughout.
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公开(公告)号：PL196872B1
公开(公告)日：2008-02-29
申请号：PL34877499
申请日：1999-11-25
Applicant: BASF AG
Inventor： HESSE WERNER , STERZEL HANS-JOSEF , TRAGUT CHRISTIAN
IPC: C07C319/24 , C07B61/00 , C07C303/16 , C07C319/12 , C07C321/14
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公开(公告)号：IN201881B
公开(公告)日：2007-02-23
申请号：IN727CH2001
申请日：2001-05-25
Applicant: BASF AG
Inventor： HESSE WERNER , STERZEL HANS-JOSEF , TRAGUT CHRISTIAN
IPC: C07B61/00 , C07C303/16 , C07C319/12 , C07C319/24 , C07C321/14
Abstract: The invention relates to a process for the preparation of organic disulfides by oxidation of mercaptans with sulfur dissolved in an organic disulfide using an amine as catalyst, where the mercaptans are used as "crude mercaptan stream" from a reaction of alcohols with hydrogen sulfide over a catalyst suitable for mercaptan synthesis. Furthermore, the invention relates to the use of the organic disulfides for the preparation of alkanesulfonic acids.
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公开(公告)号：IN725CH2001A
公开(公告)日：2006-08-25
申请号：IN725CH2001
申请日：2001-05-25
Applicant: BASF AG
Inventor： EIERMANN MATTHIAS , TRAGUT CHRISTIAN , EBEL KLAUS
IPC: C07C303/16 , C07C309/04
Abstract: The invention relates to a process for the prepartaion of alkanesulfonic acids, comprising the following steps:(a) oxidation of alkylmercaptans and/or dialkyl disulfides and/or dialkyl polysulfides having from three to nine sulfur atoms with nitric acid to form alkanesulfonic acids, water, nitrogen oxides and other byproducts,(b) regeneration of the nitrogen oxides obtained from step (a) with oxygen to give nitric acid and recycling of the nitric acid to step (a),where steps (a) and (b) are carried out in reaction chambers separate from one another.
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Patent Agency Ranking
公开(公告)号：ES2214352T3
公开(公告)日：2004-09-16
申请号：ES01102139
申请日：2001-02-01
Applicant: BASF AG
Inventor： WOSTBROCK KARL-HEINZ DR , KAIBEL GERD DR , TRAGUT CHRISTIAN , ANKEN GABRIELE
Abstract: Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa 0.5 .
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公开(公告)号：PL348774A1
公开(公告)日：2002-06-17
申请号：PL34877499
申请日：1999-11-25
Applicant: BASF AG
Inventor： HESSE WERNER , STERZEL HANS-JOSEF , TRAGUT CHRISTIAN
IPC: C07B61/00 , C07C303/16 , C07C319/12 , C07C319/24 , C07C321/14
Abstract: The invention relates to a process for the preparation of organic disulfides by oxidation of mercaptans with sulfur dissolved in an organic disulfide using an amine as catalyst, where the mercaptans are used as "crude mercaptan stream" from a reaction of alcohols with hydrogen sulfide over a catalyst suitable for mercaptan synthesis. Furthermore, the invention relates to the use of the organic disulfides for the preparation of alkanesulfonic acids.
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公开(公告)号：DE10032266A1
公开(公告)日：2002-01-17
申请号：DE10032266
申请日：2000-07-03
Applicant: BASF AG
Inventor： BOHNER GERD , DOMSCHKE THOMAS , FISCHER ROLF HARTMUTH , HAUBNER MARTIN , SIGWART CHRISTOPH , STEINBRENNER ULRICH , TRAGUT CHRISTIAN
Abstract: The invention relates to a method for the single-step production of polytetrahydrofuran and/or tetrahydrofuran copolymers having an average molecular weight of 650 to 5000 daltons by polymerizing tetrahydrofuran on an acidic heterogeneous catalyst in the presence of at least one telogen and/or comonomer of the group of the alpha, omega diols, water, polytetrahydrofuran having a molecular weight of 200 to 700 daltons and/or of the cyclic ethers, characterized by a) removing the suspended and/or dissolved catalyst components and/or secondary products of the catalyst contained in the polymerization product, b) carrying out a separation in at least one distillation step from the resulting catalyst-free polymerization product to give a distillation product that contains the polymerization product and at least one tetrahydrofuran fraction, and returning at least part of the tetrahydrofuran fraction to the polymerization, and c) removing from the distillation residue of processing step b) the low-molecular polytetrahydrofuran and/or tetrahydrofuran copolymers that have an average molecular weight of 200 to 700 daltons, and obtaining a polytetrahydrofuran and/or tetrahydrofuran copolymer that has an average molecular weight of 650 to 5000 daltons.
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公开(公告)号：DE10032265A1
公开(公告)日：2002-01-17
申请号：DE10032265
申请日：2000-07-03
Applicant: BASF AG
Inventor： SIGWART CHRISTOPH , FISCHER ROLF , STEIN FRANK , TRAGUT CHRISTIAN
Abstract: A 1-stage method for the production of tetrahydrofuran (THF) homo- or co-polymers by polymerisation of THF on an acid catalyst in presence of telogens and/or comonomers elected from alpha ,w-diols, poly-THF (mol. wt. 200-700) and/or cyclic ethers, in which the water concentration during polymerisation does not exceed 500 ppm.
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公开(公告)号：SK7152001A3
公开(公告)日：2002-01-07
申请号：SK7152001
申请日：1999-11-22
Applicant: BASF AG
Inventor： EIERMANN MATTHIAS , TRAGUT CHRISTIAN , EBEL KLAUS
IPC: C07C303/16 , C07C309/04
Abstract: The invention relates to a process for the prepartaion of alkanesulfonic acids, comprising the following steps:(a) oxidation of alkylmercaptans and/or dialkyl disulfides and/or dialkyl polysulfides having from three to nine sulfur atoms with nitric acid to form alkanesulfonic acids, water, nitrogen oxides and other byproducts,(b) regeneration of the nitrogen oxides obtained from step (a) with oxygen to give nitric acid and recycling of the nitric acid to step (a),where steps (a) and (b) are carried out in reaction chambers separate from one another.
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