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    51.
    发明专利
    未知

    公开(公告)号：ES2200582T3

    公开(公告)日：2004-03-01

    申请号：ES99962150

    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.

    52.
    发明专利
    未知

    公开(公告)号：AT240938T

    公开(公告)日：2003-06-15

    申请号：AT99962150

    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.

    55.
    发明专利
    未知

    公开(公告)号：DE19854428A1

    公开(公告)日：2000-05-31

    申请号：DE19854428

    申请日：1998-11-25

    Applicant: BASF AG

    Inventor： EIERMANN MATTHIAS ,  TRAGUT CHRISTIAN ,  EBEL KLAUS

    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 atoms 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). Steps (a) and (b) are carried out in separate reaction spaces.

    METHOD FOR PRODUCING LACTAMS USING OLIGOPHOSPHATE CATALYSTS
    56.
    发明专利
    METHOD FOR PRODUCING LACTAMS USING OLIGOPHOSPHATE CATALYSTS 未知

    公开(公告)号：CA2323616A1

    公开(公告)日：1999-09-23

    申请号：CA2323616

    申请日：1999-03-08

    Applicant: BASF AG

    Inventor： ANSMANN ANDREAS ,  FLICK KLEMENS ,  EIERMANN MATTHIAS

    IPC: C07D201/08 ,  B01J27/18 ,  C07D213/61 ,  C07D277/32

    Abstract: The invention relates to a method for producing lactams by cyclization hydrolysis of aminonitriles in the has phase in the presence of a metal phosphate catalyst. One or more oligophosphates of general formula (I) M(POa)b, wherein M represents a metal group from 3 or 4 of the periodic table including the lanthanides, a2.5 and 4.0 and b is chosen to neutralise the charges, or a mixture of one or more oligophosphates of general formula (I) with one or more other salts of a metal from group 3 or 4 of the periodic table including the lanthanides and an inorganic acid is/are used as the catalyst. The invention also relates to the production of these catalysts.

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