中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

64 records (took 0.021 seconds)

    31.
    发明专利
    未知

    公开(公告)号：BR9915651A

    公开(公告)日：2001-08-07

    申请号：BR9915651

    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.

    METHOD FOR PRODUCING ALKYNE DIOLS
    32.
    发明专利
    METHOD FOR PRODUCING ALKYNE DIOLS 未知

    公开(公告)号：CA2340697A1

    公开(公告)日：2000-02-24

    申请号：CA2340697

    申请日：1999-08-13

    Applicant: BASF AG

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

    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 o f 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.

    Method of producing alkane sulfonic acid
    33.
    发明专利
    Method of producing alkane sulfonic acid 未知

    公开(公告)号：IN207425B

    公开(公告)日：2007-06-29

    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.

    34.
    发明专利
    未知

    公开(公告)号：DE59911664D1

    公开(公告)日：2005-03-31

    申请号：DE59911664

    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.

    37.
    发明专利
    未知

    公开(公告)号：ES2190243T3

    公开(公告)日：2003-07-16

    申请号：ES99941607

    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.

Patent Agency Ranking