中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

20 records (took 0.021 seconds)

    1.
    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.

    5.
    发明专利
    未知

    公开(公告)号：BR0014844A

    公开(公告)日：2002-06-11

    申请号：BR0014844

    申请日：2000-10-10

    Applicant: BASF AG

    Inventor： BORZYK OLIVER ,  WILD JOCHEN ,  HERTEL DIETER ,  EHLE MICHAEL ,  BOECKH DIETER

    IPC: C07C303/06 ,  B01J10/02 ,  C07C305/06 ,  C08G65/26 ,  C08G65/334 ,  C11D3/37

    Abstract: A process for the production of zwitterionic polyamines by sulfation of alkoxylated and quaternized amines and subsequent neutralization which comprises continuously sulfating an alkoxylated and quaternized polyamine having at least two tertiary or quaternary amino nitrogen atoms in the molecule and containing at least one quaternized nitrogen atom, in the form of a film having a thickness of from 100 mu m to 4 mm in the absence of a solvent with a sulfur trioxide-containing inert gas at a temperature of up to 90 DEG C.

    7.
    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.

    9.
    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.

Patent Agency Ranking