中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

64 records (took 0.022 seconds)

    PROCEDIMIENTO PARA LA PRODUCCION DE DISULFUROS ORGANICOS.
    13.
    发明专利
    PROCEDIMIENTO PARA LA PRODUCCION DE DISULFUROS ORGANICOS. 未知

    公开(公告)号：ES2237958T3

    公开(公告)日：2005-08-01

    申请号：ES99961004

    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: Procedimiento para la producción continua de disulfuros orgánicos, que comprende las siguientes etapas: (a) reacción de alcanoles con sulfuro de hidrógeno en un catalizador adecuado para dar una ¿corriente de mercaptano bruto¿ que contiene mercaptano, agua, sulfuro de hidrógeno, así como pequeñas cantidades de otros productos secundarios, como sulfuro orgánico y éter, (b) reacción de la ¿corriente de mercaptano bruto¿ con azufre disuelto en un disulfuro orgánico, con catálisis con una amina, que es líquida o sólida y presenta un punto de ebullición superior al punto de ebullición del disulfuro utilizado y una solubilidad en agua inferior a 0, 5 g/l, en una columna de reacción, de modo que los compuestos de bajo punto de ebullición producidos se recirculan a la etapa (a), (c) separación de fases de la mezcla obtenida en fase acuosa, que se esclusa hacia fuera y fase orgánica de azufre, (d) purificación mediante destilación de la fase orgánica de azufre, que contiene opcionalmente compuestosde bajo punto de ebullición, el disulfuro orgánico deseado, polisulfuros, amina y cantidades pequeñas de otros productos secundarios, de modo que se extrae el disulfuro orgánico, opcionalmente se recirculan los compuestos de bajo punto de ebullición producidos a la etapa (a) y se recirculan la amina y los polisulfuros producidos a la etapa (b), con adición de azufre y opcionalmente de amina, de modo que la separación de fases y el esclusado hacia afuera de la fase acuosa puede tener lugar en la etapa (c) a continuación de la etapa (a) o la etapa (b).

    Method of producing alkane sulfonic acid
    14.
    发明专利
    Method of producing alkane sulfonic acid 未知

    公开(公告)号：AU765481B2

    公开(公告)日：2003-09-18

    申请号：AU1859300

    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.

    15.
    发明专利
    未知

    公开(公告)号：DK1105362T3

    公开(公告)日：2003-02-24

    申请号：DK99941607

    申请日：1999-08-13

    Applicant: BASF AG

    Inventor： KINDLER ALOIS ,  BRUNNER MELANIE ,  TRAGUT CHRISTIAN ,  HENKELMANN JOCHEM

    IPC: C07B61/00 ,  C07C29/42 ,  C07C33/044

    Abstract: The invention relates to a method for producing alkyne diols by reacting ketones with acetylenic hydrocarbons in an organic solvent in the presence of a base which contains potassium alcoholates of primary and/or secondary alcohols. The alkyne diols are produced while forming adducts which precipitate out of the reaction mixture and which are comprised of alkyne monoalcohols and/or alkyne diols and a base. The stoichiometries of the reaction partners are selected such that gelatinous adducts are formed which comprise a spherical surface, whereby the reaction mixture remains agitable during the entire reaction.

    16.
    发明专利
    未知

    公开(公告)号：AT230388T

    公开(公告)日：2003-01-15

    申请号：AT99941607

    申请日：1999-08-13

    Applicant: BASF AG

    Inventor： KINDLER ALOIS ,  BRUNNER MELANIE ,  TRAGUT CHRISTIAN ,  HENKELMANN JOCHEM

    IPC: C07B61/00 ,  C07C29/42 ,  C07C33/044

    Abstract: The invention relates to a method for producing alkyne diols by reacting ketones with acetylenic hydrocarbons in an organic solvent in the presence of a base which contains potassium alcoholates of primary and/or secondary alcohols. The alkyne diols are produced while forming adducts which precipitate out of the reaction mixture and which are comprised of alkyne monoalcohols and/or alkyne diols and a base. The stoichiometries of the reaction partners are selected such that gelatinous adducts are formed which comprise a spherical surface, whereby the reaction mixture remains agitable during the entire reaction.

    17.
    发明专利
    未知

    公开(公告)号：DE19907532A1

    公开(公告)日：2000-08-31

    申请号：DE19907532

    申请日：1999-02-22

    Applicant: BASF AG

    Inventor： BRUNNER MELANIE ,  HENKELMANN JOCHEM ,  KAIBEL GERD ,  KINDLER ALOIS ,  KNOLL CHRISTIAN ,  RUST HARALD ,  TRAGUT CHRISTIAN

    IPC: C07C29/17 ,  C07C29/42 ,  C07C29/74 ,  C07C31/18 ,  C07C33/044

    Abstract: The invention relates to a method for preparing at least one unsaturated alcohol (B). The method comprises the following steps (I) to (III): (I) reaction of at least one alkali or alkaline earth hydroxide with at least one alcohol (A) in at least one organic solvent (L) so that a mixture (G-I) is obtained which contains at least the alcohol (A), the solvent (L) and an alcoholate (AL); (II) reaction of at least one carbonyl compound of the general structure R-CO-R' with at least one alkine of the general structure R"-CC-H and the mixture (G-I) obtained in step (I) above, so that a mixture (G-II) is obtained which contains at least the alcohol (A), the solvent (L) and an unsaturated alcohol (B); and (III) distillation of the mixture (G-II) obtained in step (II) above so that the at least one alcohol (B) and a mixture (G-III) containing the solvent (L) and the alcohol (A), are obtained. Said method is characterized in that the solvent (L) and the alcohol (A) obtained in step (III) are fed back to step (I) as a mixture.

    Method of producing alkane sulfonic acid
    19.
    发明专利
    Method of producing alkane sulfonic acid 未知

    公开(公告)号：AU1859300A

    公开(公告)日：2000-06-13

    申请号：AU1859300

    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.

Patent Agency Ranking