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公开(公告)号：DE10313497A1
公开(公告)日：2004-10-14
申请号：DE10313497
申请日：2003-03-25
Applicant: BASF AG
Inventor： STERZEL HANS-JOSEF , STROEFER ECKHARD , WEBER MARKUS , FRIEDRICH HOLGER
IPC: C01B7/19 , C01B21/083 , C01C1/16
Abstract: Method for preparing trifluoramine (I) by reacting ammonia and fluorine in presence of ammonium hydrogendifluoride (X), where (X) is present in a fluidized bed, in solid form.
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公开(公告)号：DE10309288A1
公开(公告)日：2004-09-16
申请号：DE10309288
申请日：2003-03-04
Applicant: BASF AG
Inventor： STROEFER ECKHARD , LANG NEVEN , STEINBRENNER ULRICH , HASSE HANS , OTT MICHAEL , GRUETZNER THOMAS
IPC: C07C45/00 , C07C45/82 , C07C47/058 , C02F1/08
Abstract: Process for preparing high-concentration gaseous formaldehyde having a molar CH 2 O:H 2 O ratio of >=0.6 from an aqueous formaldehyde solution by evaporation of at least part of the solution, in which the aqueous formaldehyde solution is heated to a vaporization temperature T and the gas phase formed is taken off, wherein the evaporation temperature T obeys the relationship: T[° C.]>=T' min [° C.] where T' min (c)=A+Bx(c/100)+Cx(c/100) 2 +Dx(c/100) 3 and A=+68.759, B=+124.77, C=-12.851, D=-10.095, where c is the instantaneous CH 2 O content of the aqueous formaldehyde solution during the evaporation in percent by weight and is from 20 to 99% by weight.
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公开(公告)号：CA2517564A1
公开(公告)日：2004-09-16
申请号：CA2517564
申请日：2004-03-04
Applicant: BASF AG
Inventor： HASSE HANS , GRUETZNER THOMAS , STROEFER ECKHARD
IPC: C07C45/78 , C07C45/82 , C07C47/058
Abstract: A method for stabilization of highly concentrated formaldehyde solutions containing >70 wt. % CH2O with respect to solid precipitation, wherein th e highly concentrated formaldehyde solution is heated directly after productio n at a heating rate of at least 5~ C/min to a temperature of at least 80 ~C to 200 ~C maximum and is stored at a temperature within said range.
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公开(公告)号：DE10260082A1
公开(公告)日：2004-07-01
申请号：DE10260082
申请日：2002-12-19
Applicant: BASF AG
Inventor： SOHN MARTIN , STROEFER ECKHARD , NEVEJANS FILIP , PENZEL ULRICH , PALLASCH HANS-JUERGEN , LEUTHOLD RENE , BRODHAGEN ANDREAS , WOELFERT ANDREAS , MACKENROTH WOLFGANG , MAURER MARKUS
IPC: C07C263/10 , C07C265/14
Abstract: The invention relates to a process for preparing polyisocyanates by reacting organic amines with phosgene, wherein the reaction is carried out in at least three stages, with the first stage being carried out in a mixing apparatus, the second stage in at least one residence apparatus and the third stage in at least one separation apparatus and the pressure in each successive stage being lower than that in the previous stage.
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公开(公告)号：DE10238995A1
公开(公告)日：2004-02-26
申请号：DE10238995
申请日：2002-08-20
Applicant: BASF AG
Inventor： WOELFERT ANDREAS , MUELLER CHRISTIAN , STROEFER ECKHARD , WEBER MARKUS , PFEFFINGER JOACHIM , KNOESCHE CARSTEN
IPC: C07B43/10 , C07C263/10 , C07C265/12 , C07C265/14 , C08G73/00
Abstract: A method for the production of aromatic di-isocyanates (I) by gas-phase reaction of phosgene with diamines involves carrying out the reaction in a reaction zone under a pressure of more than 3 bar and less than 20 bar. An Independent claim is also included for a production unit for this process, in which the ratio of production capacity to phosgene hold-up is more than 3200 tonnes di-isocyanate per annum/kg phosgene.
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Patent Agency Ranking
公开(公告)号：AU2003282140A1
公开(公告)日：2004-02-25
申请号：AU2003282140
申请日：2003-07-30
Applicant: BASF AG
Inventor： STROEFER ECKHARD , HARTH KLAUS , JACOBS JAN D , DEBERDT FILIP , WALSDORFF CHRISTIAN , FIENE MARTIN
IPC: B01J23/46 , C01B7/04 , C07C263/10 , C07C263/20 , C25B1/26
Abstract: Process for preparing organic isocyanates, which comprises the steps (a) making available a first partial amount of chlorine, with the chlorine of this first partial amount having a content of free and bound bromine and iodine of
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公开(公告)号：DE10235476A1
公开(公告)日：2004-02-12
申请号：DE10235476
申请日：2002-08-02
Applicant: BASF AG
Inventor： WALSDORFF CHRISTIAN , FIENE MARTIN , STROEFER ECKHARD , HARTH KLAUS , JACOBS JAN D , DEBERDT FILIP
Abstract: Process for preparing organic isocyanates, which comprises the steps (a) making available a first partial amount of chlorine, with the chlorine of this first partial amount having a content of free and bound bromine and iodine of
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公开(公告)号：NO20025379A
公开(公告)日：2003-05-12
申请号：NO20025379
申请日：2002-11-08
Applicant: BASF AG
Inventor： STROEFER ECKHARD , WOSTBROCK KARL-HEINZ , WEBER MARKUS
CPC classification number: C07C51/10 , A23K20/105 , B01D3/141 , C07C51/44 , C07C53/06
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公开(公告)号：DE10134389A1
公开(公告)日：2003-01-16
申请号：DE10134389
申请日：2001-07-04
Applicant: BASF AG
Inventor： WOSTBROCK KARL-HEINZ , STROEFER ECKHARD , WEBER MARKUS , KERTH STEFFEN
IPC: C01B21/14
Abstract: The invention relates to a method for producing an aqueous hydroxylamine solution that is devoid of salt by reacting an aqueous solution of a hydroxylammonium salt with a base to obtain a mixture and by separating an aqueous hydroxylamine solution devoid of salt by distillation from said mixture. The method is characterised in that an aqueous solution of a mixture of NaOH and KOH with a molar ratio of Na+: K+ in the region of between 70: 30 and 95: 5 and a total concentration of Na+ and K+ in the region of between 0.1 and 10 m/m % (in relation to the total quantity of the mixture) is used as the base.
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公开(公告)号：CA2451869A1
公开(公告)日：2003-01-16
申请号：CA2451869
申请日：2002-07-02
Applicant: BASF AG
Inventor： WOSTBROCK KARL-HEINZ , KERTH STEFFEN , KRUEGER HEINZ , THIEL JOACHIM , STROEFER ECKHARD , SACHWEH BERND , RUMPF BERND , GERBER BERND , WEBER MARKUS
Abstract: The invention relates to a method for producing a highly pure, aqueous hydroxylamine solution by distilling an aqueous solution, devoid of salt, of a hydroxyl ammonium salt in a plate column comprising at least two mechanical plates. Said method is characterised in that packing bodies are arranged between at least two plates of the plate column over the cross-section of sa id column.
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