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    11.
    发明专利
    未知

    公开(公告)号：DE19502165A1

    公开(公告)日：1996-08-01

    申请号：DE19502165

    申请日：1995-01-25

    Applicant: BASF AG

    Inventor： STEUERLE ULRICH DR ,  SCHUH GEORG ,  SCHWEINZER JUERGEN DR ,  DINGERDISSEN UWE DR

    IPC: C07D203/02 ,  C07D303/04 ,  C07D303/14 ,  C07D303/36

    Abstract: A process for producing aziridines of the formula (I) in which R , R , R , R and R are mutually independently H, C1-C8 alkyl or aryl and R is in addition benzyl, C1-C8 hydroxyalkyl or C1-C8 aminoalkyl, by the intramolecular catalytic dehydration of alkanol amines of the formula (II) in which the constituents R , R , R , R and R have the meanings given in formula (I), in the gas phase at temperatures of at least 250 DEG C on solid catalysts in a fluidised bed at a pressure of 1 to 500 mbar, in which, while maintaining the fluidised bed, a part of the solid catalyst is removed from the reactor, regenerated and fed back into the generator and the aziridines are isolated from the reaction mixture.

    14.
    发明专利
    未知

    公开(公告)号：ES2093963T3

    公开(公告)日：1997-01-01

    申请号：ES93908869

    申请日：1993-04-01

    Applicant: BASF AG

    Inventor： WOLF GERHARD ,  OFTRING ALFRED ,  SCHUH GEORG ,  WOLF HELMUT ,  ALT RUDOLF ,  BECHTOLSHEIMER HANS-HEINRICH

    IPC: C07H15/04

    Abstract: PCT No. PCT/EP93/00791 Sec. 371 Date Sep. 15, 1994 Sec. 102(e) Date Sep. 15, 1994 PCT Filed Apr. 1, 1993 PCT Pub. No. WO93/21196 PCT Pub. Date Oct. 28, 1993The preparation of alkyl glycosides by reaction of aqueous glycoses having a water content of 10-80% by weight with aliphatic primary alcohols having from 5 to 30 C atoms is described, in which (a) the alcohols and the glycoses are employed in a molar ratio of 2:1 to 10:1, (b) 0.1-5% by weight, based on the amount of the glycoses employed, of the acidic form of an anionic surfactant is used as the acidic catalyst having emulsifying properties, (c) 1-30% by weight, based on the amount of the glycoses employed, of alkyl glycosides is used as a further emulsifier, (d) the aqueous glycose is preheated to 50 DEG -90 DEG C. and the preheated aqueous solution of the glycose is metered with effective mixing into the reaction mixture of alcohol, acidic catalyst and emulsifier in such a manner that an emulsion is formed, (e) the reaction is carried out at from 100 DEG to 150 DEG C. and from 10 to 100 mbar, the water introduced into the reaction mixture and the water formed by the reaction being continuously removed by distillation, (f) after the reaction has ended, the acidic catalyst is neutralized by addition of a base such that the resulting mixture has a pH of 8-10, then (g) the excess alcohol is removed by distillation at from 0.01 to 10 mbar down to a residual content of less than 5% by weight, based on the amount of alkyl glycoside present, and (h) the reaction mixture is bleached at pH 8-10 after conversion into an aqueous paste having a content of from 30 to 70% by weight of alkyl glycoside using a compound eliminating active oxygen.

    15.
    发明专利
    未知

    公开(公告)号：DE19518987A1

    公开(公告)日：1996-12-05

    申请号：DE19518987

    申请日：1995-05-29

    Applicant: BASF AG

    Inventor： GREINDL THOMAS DR ,  OFTRING ALFRED DR ,  BRAUN GEROLD DR ,  WILD JOCHEN DR ,  POTTHOFF-KARL BIRGIT DR ,  SCHUH GEORG

    IPC: C07C227/18 ,  C07C227/14 ,  C07C227/16 ,  C07C227/24 ,  C07C227/26 ,  C07C229/16

    Abstract: Prepn. of glycine-N,N-diacetic acid derivs. of formula (I), where R = 1-30C alkyl or 2-30C alkenyl, which can also contain, as substits., up to 5 hydroxyl gps., formyl gps., 1-4C alkoxy gps., phenoxy gps. of 1-4C alkoxycarbonyl gps., and which can be interrupted by up to 5 non-adjacent O atoms, alkoxylate groupings of formula -(CH2)k-O-(A O)m-(A O)n-Y, phenyl alkyl gps. with 1-20C atoms in the alkyl, phenyl, a 5- or 6-membered (un)satd. heterocyclic ring with up to 3 heteroatoms from N, O and S which can also be benzo-condensed, whereby all phenyl cores and heterocyclic rings given for R can also contain as substits. up to 3 1-4C alkyl gps., hydroxyl, gps., carboxyl gps., sulpho gps. or 1-4C alkoxy carbonyl gps., or a gp. of formula (II); A = 1-12C alkylene bridge or a chemical bond; A , A = 2-4C 1,2-alkylene gps.; Y = H, 1-12 C alkyl, phenyl or 1-4 C alkoxycarbonyl; k = 1, 2 or 3; m, n = 0-50; m+n = at least 4; and M = H, alkali metal, alkaline earth metal, ammonium or substd. ammonium in the corresp. stoichiometric quantities, comprises reacting corresp. 2-substd. glycines or 2-substd. glycine nitriles or double glycines of formula (III) or double glycine nitriles of formula (IV) or precursors of the glycine derivs. given as starting materials with formaldehyde and alkali metal cyanide in aq. alkaline medium at a pH of 8-14. The novelty is that 0.5-30 % of the quantity of alkali metal cyanide required for reaction is added to the glycine derivs. or their precursors and then the remaining amt. of alkali metal cyanide and the formaldehyde is added simultaneously over 0.5-12 hrs.

    PROCESS FOR PRODUCING ALKYL GLYCOSIDES
    16.
    发明专利
    PROCESS FOR PRODUCING ALKYL GLYCOSIDES 未知

    公开(公告)号：CA2124071A1

    公开(公告)日：1993-10-28

    申请号：CA2124071

    申请日：1993-04-01

    Applicant: BASF AG

    Inventor： WOLF GERHARD ,  OFTRING ALFRED ,  SCHUH GEORG ,  WOLF HELMUT ,  ALT RUDOLF ,  BECHTOLSHEIMER HANS-HEINRICH ,  HERTEL DIETER

    IPC: C07H15/04

    Abstract: The preparation of alkyl glycosides by reaction of aqueous glycoses having a water content of 10 - 80% by weight with aliphatic primary alcohols having from 5 to 30 C atoms is described, in which (a) the alcohols and the glycoses are employed in a molar ratio of 2:1 to 10:1, (b) 0.1 - 5% by weight, based on the amount of the glycoses employed, of the acidic form of an anionic surfactant is used as the acidic catalyst having emulsifying properties, (c) 1 - 30% by weight, based on the amount of the glycoses employed, of alkyl glycosides is used as a further emulsifier, (d) the aqueous glycose is preheated to 50 - 90.degree.C and the preheated aqueous solution of the glycose is metered with effective mixing into the reaction mixture of alcohol, acidic catalyst and emulsifier in such a manner that an emulsion is formed, (e) the reaction is carried out at from 100 to 150.degree.C and from 10 to 100 mbar, the water introduced into the reaction mixture and the water formed by the reaction being continuously removed by distillation, (f) after the reaction has ended, the acidic catalyst is neutralized by addition of a base such that the resulting mixture has a pH of 8 - 10, then (g) the excess alcohol is removed by distillation at from 0.01 to 10 mbar down to a residual content of less than 5% by weight, based on the amount of alkyl glycoside present, and (h) the reaction mixture is bleached at pH 8 - 10 after conversion into an aqueous paste having a content of from 30 to 70% by weight of alkyl glycoside using a compound eliminating active oxygen.

    19.
    发明专利
    未知

    公开(公告)号：DE59506116D1

    公开(公告)日：1999-07-08

    申请号：DE59506116

    申请日：1995-09-12

    Applicant: BASF AG

    Inventor： STRECKER BEATE ,  OFTRING ALFRED ,  HERTEL DIETER ,  SCHUH GEORG

    IPC: C07B61/00 ,  C07C231/02 ,  C07C233/47 ,  C07C303/22 ,  C07C303/32 ,  C07C309/15

    Abstract: PCT No. PCT/EP95/03584 Sec. 371 Date Mar. 24, 1997 Sec. 102(e) Date Mar. 24, 1997 PCT Filed Sep. 12, 1995 PCT Pub. No. WO96/09278 PCT Pub. Date Mar. 28, 1996N-acylamino carboxylic acids and N-acylamino sulfonic acids and their alkali metal salts from the technical alkali metal salts of amino carboxylic acids and amino sulfonic acids, respectively, with an active content of 50-95% by weight, based on the solids content of the technical alkali metal salts, and from alkyl carboxylates, are prepared by (a) preparing a suspension of the solid anhydrous technical alkali metal salts of the amino carboxylic acids or amino sulfonic acids in the alkyl carboxylates, (b) reacting this suspension by adding more than 30 to 150 mol % of strong bases to give the alkali metal salts of the N-acylamino carboxylic acids or N-acylamino sulfonic acids, and (c) if required preparing therefrom the free N-acylamino carboxylic acids or N-acylamino sulfonic acids in a conventional way by adding acids.

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