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    112.
    发明专利
    未知

    公开(公告)号：DE59905681D1

    公开(公告)日：2003-06-26

    申请号：DE59905681

    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.

    Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids, useful as polymer plasticizers, comprises reaction of a diene-maleic acid anhydride mixture, esterification and hydrogenation.
    113.
    发明专利
    Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids, useful as polymer plasticizers, comprises reaction of a diene-maleic acid anhydride mixture, esterification and hydrogenation. 未知

    公开(公告)号：DE10161010A1

    公开(公告)日：2003-06-26

    申请号：DE10161010

    申请日：2001-12-12

    Applicant: BASF AG

    Inventor： HAESE FRANK ,  BERGNER EIKE JOHANNES ,  EBEL KLAUS ,  BREITSCHEIDEL BORIS

    IPC: B32B17/10 ,  C08K5/12 ,  C07C69/75 ,  C07C55/26

    Abstract: Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids or corresponding derivatives comprises: (A) reaction of a diene-maleic acid anhydride mixture to form an alkyl (un)substituted cyclohexene dicarboxylic acid anhydride in the condensed phase; (B) formation of the esters; and (C) hydrogenation to the corresponding cyclohexane derivative in either order. Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids or corresponding derivatives (I) comprises: (A) reaction of a diene-maleic acid anhydride mixture to form an alkyl (un)substituted cyclohexene dicarboxylic acid anhydride in the condensed phase; (B) formation of an ester of an alkyl substituted or unsubstituted cyclohexene dicarboxylic acid anhydride; and (C) hydrogenation of the ester from step (B) to the corresponding cyclohexane derivative or (B') hydrogenation of the alkyl (un)substituted cyclohexene dicarboxylic acid anhydride from step (A), followed by (C') formation of an ester from the cyclohexane dicarboxylic acid anhydride from step (B'). Independent claims are also included for the following: (1) a mixture (II) of alkyl (un)substituted cyclohexane dicarboxylic acids or derivatives (I); and (2) a process for the separation of butadiene from butadiene containing hydrocarbon streams comprises: (i) reaction of the hydrocarbon stream with maleic acid anhydride; and (ii) separation of the resulting cyclohexene dicarboxylic acid anhydride from the remaining hydrocarbons.

    116.
    发明专利
    未知

    公开(公告)号：DE59905124D1

    公开(公告)日：2003-05-28

    申请号：DE59905124

    申请日：1999-02-11

    Applicant: BASF AG

    Inventor： EIERMANN MATTHIAS ,  EBEL KLAUS ,  BOTZEM JOERG

    IPC: B01J27/182 ,  C07B61/00 ,  C07C45/52 ,  C07C45/65 ,  C07C45/66 ,  C07C45/67 ,  C07C45/82 ,  C07C49/587 ,  C07C49/593 ,  C07C49/597 ,  C07C49/603 ,  C07C49/607 ,  C25B3/23 ,  C25B3/02

    Abstract: Preparation of 2-cycloalkenones (I) comprises subjecting 2-alkoxycycloalkanones (II) and/or 2-hydroxycycloalkanone ketals (III) to a gas-phase elimination reaction in the presence of an acidic heterogeneous catalyst. Preparation of 2-cycloalkenones of formula (I) comprises subjecting 2-alkoxycycloalkanones of formula (II) and/or 2-hydroxycycloalkanone ketals of formula (III) to a gas-phase elimination reaction in the presence of an acidic heterogeneous catalyst: n = 0-20; m = 0-3; R = alkyl, alkylaryl, aryl, arylalkyl, alkenyl or alkynyl, where the aryl groups are optionally substituted by 1-2 of alkyl, OH and alkoxy; R' = alkyl or alkenyl, or R'+R' = 1-5C alkylene or 2-5C alkenylene.

    117.
    发明专利
    未知

    公开(公告)号：ES2182335T3

    公开(公告)日：2003-03-01

    申请号：ES98932116

    申请日：1998-06-04

    Applicant: BASF AG

    Inventor： EBEL KLAUS ,  PINKOS ROLF

    IPC: B01J23/80 ,  C07B61/00 ,  C07C29/149 ,  C07C29/36 ,  C07C31/133 ,  C07C51/353 ,  C07C67/347

    Abstract: 2-Cyclododecyl-propanol [sic], which is in demand as musk scent, is prepared in an advantageous industrial process by reacting cyclododecene with an excess of propionic acid or of a propionic acid derivative in the presence of catalytic amounts of a free-radical initiator, and subsequently catalytically hydrogenating the 2-cyclododecylpropionic acid which is formed or the corresponding 2-cyclododecylpropionic acid derivatives.

    118.
    发明专利
    未知

    公开(公告)号：DE10055181A1

    公开(公告)日：2002-05-29

    申请号：DE10055181

    申请日：2000-11-08

    Applicant: BASF AG

    Inventor： WEIGL HAGEN ,  EBEL KLAUS ,  MAAS STEFFEN ,  SCHULZ GERHARD ,  DERNBACH MATTHIAS

    IPC: C07C51/235 ,  C07C51/285 ,  C07C51/47 ,  C07C59/105 ,  C07C59/01

    Abstract: The invention relates to a method for producing poly- or monomethylol alkanoic acids of general formula (I), R being the same or different and meaning a substituted or unsubstituted aliphatic hydrocarbon with 1 to 22 C-atoms or a methylol group; from the corresponding poly- or monomethylol alkanals of general formula (II), R having the meaning above, by oxidation with hydrogen peroxide. The poly- or monomethylol alkanal of general formula (II) used in the reaction has an overall content of metal ions of groups 3 to 14 of the periodic table of up to 5 ppm. The method is used especially for producing dimethylol allkanoic acids from the corresponding dimethylol alkanals, especially for producing dimethylol butanal or dimethylol propanal.

    119.
    发明专利
    未知

    公开(公告)号：DE19919174A1

    公开(公告)日：2000-11-09

    申请号：DE19919174

    申请日：1999-04-28

    Applicant: BASF AG

    Inventor： SLANY MICHAEL ,  SCHULZ MICHAEL ,  SCHAEFER MARTIN ,  ZELLER EDGAR ,  EBEL KLAUS

    IPC: C07D263/08 ,  C07D233/76 ,  C07D263/44

    Abstract: Preparation of hydantoins or aminoacid cyclic anhydrides (I) involves reacting an aldehyde (II) with carbon monoxide and a u or carbamate compound (III) in presence of a transition metal catalyst. Preparation of hydantoins or aminoacid cyclic anhydrides of formula (I) involves reacting an aldehyde RCHO (II) with carbon monoxide and a urea or carbamate compound of formula R3-NH-C(O)-R2 (III) in presence of a transition metal catalyst. X = O or NH; R = alkyl or aryl (both optionally substituted); R3 = H or as defined for R; R2 = group which reacts with the COOH group formed in the reaction under ring-closure to form (I).

    120.
    发明专利
    未知

    公开(公告)号：ES2145941T3

    公开(公告)日：2000-07-16

    申请号：ES95941718

    申请日：1995-12-16

    Applicant: BASF AG

    Inventor： MELDER JOHANN-PETER ,  SCHNURR WERNER ,  FLICK KLEMENS ,  EBEL KLAUS ,  WITZEL TOM ,  FISCHER ROLF

    IPC: B01J23/76 ,  B01J23/889 ,  B01J23/89 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24

    Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

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