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    Procedimiento para la preparación de éter carboxilatos
    3.
    发明专利
    Procedimiento para la preparación de éter carboxilatos 未知

    公开(公告)号：ES2554672T3

    公开(公告)日：2015-12-22

    申请号：ES11702838

    申请日：2011-02-10

    Applicant: BASF SE

    Inventor： BAUMANN ROBERT ,  BIEL MARKUS CHRISTIAN ,  DECKERS ANDREAS ,  OFTRING ALFRED ,  RITTIG FRANK ,  STAFFEL WOLFGANG

    IPC: C07C51/295 ,  C07C51/235 ,  C07C59/305 ,  C07C227/02

    Abstract: Procedimiento para la preparación de éter carboxilato de fórmula I**Fórmula** en el que el compuesto correspondiente de fórmula II**Fórmula** siendo, respectivamente, independientemente entre sí R1 un alquileno C1 a C50, mono-, di-, tri-,...poliamina, X O, COO, CH2-NH-O para q >= 1 y r >= 0 o N, N(CH2)tO para q >= 2 y r >= 0 a 50 R2 H o alquilo C1 a C10, R3 H o un alquilo C1 a C10, R4 H o un alquilo C1 a C10, M H o un metal, amonio o base orgánica, n un número de 0 a 50, m es un número de 0 a 40 p es un número de 0 a 40, q es un número de 1 a 2, s es 0 o 1, t es 0 a 20, con la condición de que n + m + p es al menos 1 y R es H o un metal, preferentemente alcalino, alcalinotérreo se hace reaccionar con una base usando un catalizador de metal de transición, que se presenta como cobre- Raney, y añadiéndose de forma continua la base a la mezcla de reacción a lo largo de un periodo de tiempo superior a 30 minutos.

    Metal cyanide comprising aqueous solutions for thecyanide process for extracting gold and silver
    5.
    发明专利
    Metal cyanide comprising aqueous solutions for thecyanide process for extracting gold and silver 未知

    公开(公告)号：AP2476A

    公开(公告)日：2012-09-27

    申请号：AP2008004570

    申请日：2007-01-22

    Applicant: BASF SE

    Inventor： DECKERS ANDREAS ,  SCHNEIDER THOMAS

    IPC: C01C3/08 ,  C22B3/44 ,  C22B11/08

    Abstract: The present invention relates to solutions comprising water and at least one metal cyanide, at least a part of the water being obtained from wastewater which occurs as depleted wastewater in a process for extracting noble metals from noble metal-containing ores by the cyanide process, the process for the preparation of solutions according to the invention and to the use of the solutions according to the invention in a process for extracting noble metals from noble metal-containing ores by the cyanide process, to a process for extracting noble metals from noble metal-containing ores by the cyanide process, wherein the solution according to the invention is used, and to the use of depleted wastewater occurring in the extraction of noble metals from noble metal-containing ores by the cyanide process to the preparation of solutions comprising water and at least one metal cyanide.

    Aqueous solutions containing metal cyanide for cyanide leaching for the winning of gold and silver
    8.
    发明专利
    Aqueous solutions containing metal cyanide for cyanide leaching for the winning of gold and silver 未知

    公开(公告)号：AU2007213892B2

    公开(公告)日：2011-03-10

    申请号：AU2007213892

    申请日：2007-01-22

    Applicant: BASF SE

    Inventor： SCHNEIDER THOMAS ,  DECKERS ANDREAS

    IPC: C22B11/08 ,  C01C3/08 ,  C22B3/44

    Abstract: The present invention relates to solutions comprising water and at least one metal cyanide, at least a part of the water being obtained from wastewater which occurs as depleted wastewater in a process for extracting noble metals from noble metal-containing ores by the cyanide process, the process for the preparation of solutions according to the invention and to the use of the solutions according to the invention in a process for extracting noble metals from noble metal-containing ores by the cyanide process, to a process for extracting noble metals from noble metal-containing ores by the cyanide process, wherein the solution according to the invention is used, and to the use of depleted wastewater occurring in the extraction of noble metals from noble metal-containing ores by the cyanide process to the preparation of solutions comprising water and at least one metal cyanide.

    Improved method for the production of hydrocyanic acid by catalytic dehydration of gaseous formamide
    10.
    发明专利
    Improved method for the production of hydrocyanic acid by catalytic dehydration of gaseous formamide 未知

    公开(公告)号：AP2010005262A0

    公开(公告)日：2010-06-30

    申请号：AP2010005262

    申请日：2008-11-12

    Applicant: BASF SE

    Inventor： BOEHLING RALF ,  ACHHAMMER GUNTHER ,  DECKERS ANDREAS

    IPC: B01J19/00 ,  C01C3/02

    Abstract: A process for preparing hydrogen cyanide by catalytically dehydrating gaseous formamide in a tubular reactor formed from at least one reaction channel in which the catalytic dehydration proceeds, said reaction channel having an inner surface which is formed from a material having an iron content of ≧50% by weight, and no additional catalysts and/or internals being present in the reaction channel, and the at least one reaction channel having a mean hydraulic diameter of from 0.5 to 6 mm, and a reactor with the features specified above and the use of the inventive reactor for preparing hydrogen cyanide by catalytically dehydrating gaseous formamide.

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