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    Preparation of aziridine(s), e.g. ethylene imine
    1.
    发明专利
    Preparation of aziridine(s), e.g. ethylene imine 未知

    公开(公告)号：DE19548337A1

    公开(公告)日：1997-06-26

    申请号：DE19548337

    申请日：1995-12-22

    Applicant: BASF AG

    Inventor： STEUERLE ULRICH DR ,  REUTHER WOLFGANG DR ,  SCHUH GEORG

    IPC: C07D203/02

    Abstract: A method for the preparation of aziridines by catalytic dehydration of alkanolamines in the gas phase - comprises carrying out the dehydration reaction in at least two reactors located one after the other in a cascade so that the conversion rate of alkanolamine in each reactor is 20 - 80 % and the aziridines are removed with byproducts from the reaction mixture downstream of each reactor.

    2.
    发明专利
    未知

    公开(公告)号：DE19540645A1

    公开(公告)日：1997-05-07

    申请号：DE19540645

    申请日：1995-10-31

    Applicant: BASF AG

    Inventor： EHLE BEATE DR ,  SCHUH GEORG ,  KAHMEN MARTIN AUS DEM DR ,  HERTEL DIETER

    IPC: B01J19/00 ,  B01J19/24 ,  C07C231/02 ,  C07C233/47 ,  C07C233/49 ,  C07C309/15 ,  C07C233/45

    Abstract: The invention concerns a process and device for the continuous preparation of N-acylaminocarboxylic acids and N-acylaminosulphonic acids and their alkali metal salts from the alkali metal salts of aminocarboxylic acids and aminosulphonic acids and carboxylic acid halides in a reactor taking the form of a closed circuit. According to the invention the reactants are fed into the closed circuit for immediate reaction and part of the product solution corresponding to the amount fed in is continuously channelled out of the closed circuit. The reactants are circulated by a circulating pump. The temperature in the reactor is controlled and the heat generated during the reaction is expelled.

    6.
    发明专利
    未知

    公开(公告)号：DE4433977A1

    公开(公告)日：1996-03-28

    申请号：DE4433977

    申请日：1994-09-23

    Applicant: BASF AG

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

    IPC: C07B61/00 ,  C07C231/02 ,  C07C233/47 ,  C07C303/22 ,  C07C303/32 ,  C07C309/15 ,  C07C231/12 ,  C07C309/21

    Abstract: In order to produce N-acylamino carboxylic and N-acylaminosulphonic acids and their alkaline metal salts from industrial alkaline metal salts of aminocarboxylic or aminosulphonic acids with an active content from 50 to 95 % by weight, in relation to the solid content of the industrial alkaline metal salts, and from carboxylic acid alkyl esters, (a) a suspension of solid water-free industrial alkaline metal salts of aminocarboxylic or aminosulphonic acids in carboxylic acid alkyl esters is prepared; (b) the suspension is made to react by admixture of more than 30 and up to 150 % by moles of strong bases into the alkaline metal salts of N-acylaminocarboxylic or N-acylaminosulphonic acids; and (c) if desired free N-acylaminocarboxylic or N-acylaminosulphonic acids are produced therefrom in the usual manner by admixture of acids.

    8.
    发明专利
    未知

    公开(公告)号：ES2145341T3

    公开(公告)日：2000-07-01

    申请号：ES96108081

    申请日：1996-05-21

    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.

    9.
    发明专利
    未知

    公开(公告)号：DE59604862D1

    公开(公告)日：2000-05-11

    申请号：DE59604862

    申请日：1996-05-21

    Applicant: BASF AG

    Inventor： GREINDL DR ,  OFTRING DR ,  BRAUN DR ,  WILD DR ,  POTTHOFF-KARL 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.

    10.
    发明专利
    未知

    公开(公告)号：DE59304432D1

    公开(公告)日：1996-12-12

    申请号：DE59304432

    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: 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.

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