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    41.
    发明专利
    未知

    公开(公告)号：ES2187826T3

    公开(公告)日：2003-06-16

    申请号：ES97944794

    申请日：1997-08-26

    Applicant: BASF AG

    Inventor： WEISS ROBERT ,  KRAUSS DIETER ,  KELLER DIETER ,  PIPPER GUNTER ,  HARDER WOLFGANG ,  LUDWIG ALFONS

    IPC: C08G69/04 ,  C08G69/08 ,  C08G69/00 ,  C08G69/28 ,  C08G69/36

    Abstract: A process for preparing a polyamide by reacting at least one aminonitrile with water comprises:(1) reacting at least one aminonitrile with water at a temperature from 100 to 360° C. and a pressure from 0.1 to 35x106 Pa to obtain a reaction mixture,(2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and the pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or the first solid phase or from the mixture of first liquid and first solid phase, and(3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 360° C. and a pressure from 0.1 to 30x106 Pa to obtain a product mixture.

    42.
    发明专利
    未知

    公开(公告)号：DK1070093T3

    公开(公告)日：2002-07-08

    申请号：DK99916829

    申请日：1999-03-18

    Applicant: BASF AG

    Inventor： BREINER ULRIKE ,  JULIUS MANFRED ,  NEUBERG RAINER ,  WEISS ROBERT ,  WILMS AXEL ,  HU HARRY Y

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/28 ,  C08G69/48 ,  C08K5/3435

    Abstract: A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I)whereR is a functional group R which bears 1-4 identical or different amide-forming groups R ,R is H, C1-C20-alkyl, cycloalkyl, benzyl or OR , where R is H, C1-C20-alkyl, cycloalkyl or benzyl,R , R , R and R are independently C1-C10-alkyl,n is a natural number greater than 1, andthe piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R , R , R , R and R .The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.

    PROCESS FOR PREPARING POLYAMIDES FROM AMINONITRILES AND POLYAMIDE PREPARED IN SUCH A MANNER
    47.
    发明专利
    PROCESS FOR PREPARING POLYAMIDES FROM AMINONITRILES AND POLYAMIDE PREPARED IN SUCH A MANNER 未知

    公开(公告)号：CZ67599A3

    公开(公告)日：1999-06-16

    申请号：CZ67599

    申请日：1997-08-26

    Applicant: BASF AG

    Inventor： WEISS ROBERT ,  KRAUSS DIETER ,  KELLER DIETER ,  PIPPER GUNTER ,  HARDER WOLFGANG ,  LUDWIG ALFONS ,  MOHRSCHLADT RALF

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/28 ,  C08G69/36

    Abstract: A process for preparing a polyamide by reacting at least one aminonitrile with water comprises:(1) reacting at least one aminonitrile with water at a temperature from 100 to 360° C. and a pressure from 0.1 to 35x106 Pa to obtain a reaction mixture,(2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and the pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or the first solid phase or from the mixture of first liquid and first solid phase, and(3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 360° C. and a pressure from 0.1 to 30x106 Pa to obtain a product mixture.

    49.
    发明专利
    未知

    公开(公告)号：TR199900422T2

    公开(公告)日：1999-04-21

    申请号：TR9900422

    申请日：1997-08-26

    Applicant: BASF AG

    Inventor： WEISS ROBERT ,  KRAUSS DIETER ,  KELLER DIETER ,  PIPPER GUNTER ,  HARDER WOLFGANG ,  LUDWIG ALFONS ,  MOHRSCHLADT RALF

    IPC: C08G69/04 ,  C08G69/08 ,  C08G69/00 ,  C08G69/28 ,  C08G69/36

    Abstract: A process for preparing a polyamide by reacting at least one aminonitrile with water comprises:(1) reacting at least one aminonitrile with water at a temperature from 100 to 360° C. and a pressure from 0.1 to 35x106 Pa to obtain a reaction mixture,(2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and the pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or the first solid phase or from the mixture of first liquid and first solid phase, and(3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 360° C. and a pressure from 0.1 to 30x106 Pa to obtain a product mixture.

    PROCESS FOR PRODUCING POLYAMIDES FROM AMINONITRILES
    50.
    发明专利
    PROCESS FOR PRODUCING POLYAMIDES FROM AMINONITRILES 未知

    公开(公告)号：CA2264023A1

    公开(公告)日：1998-03-05

    申请号：CA2264023

    申请日：1997-08-26

    Applicant: BASF AG

    Inventor： MOHRSCHLADT RALF ,  LUDWIG ALFONS ,  KRAUSS DIETER ,  PIPPER GUNTER ,  KELLER DIETER ,  HARDER WOLFGANG ,  WEISS ROBERT

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/28 ,  C08G69/36

    Abstract: A process for producing a polyamide by reacting at least one aminonitrile with water has the following steps: (1) at least one aminonitrile is reacted with water at a temperature from 100 to 360 ~C and pressure from 0.1 to 35.x 106 Pa, yielding a reaction mixture; (2) the reaction mixture is further reacted at a temperature from 150 to 400 ~C and pressure lower than the pressure in step 1. The temperature and pressure are selected to yield a first gaseous phase and a first liquid or solid phase or a mixture of a first solid and a first liquid phase. The first gaseous phase is separated from the first liquid or solid phase or the mixture of a first liquid and a first solid phase is separated; and (3) the first liquid or solid phase or the mixture of a first liquid and first solid phase is mixed with a water-containing gaseous or liquid phase at a temperature from 150 to 360 ~C and pressure from 0.1 to 30 x 106 Pa, yielding a product mixture. Also disclosed are other embodiments of this process and the thus produced polyamides.

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