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    PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYLACTAMS
    51.
    发明专利
    PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYLACTAMS 未知

    公开(公告)号：DE3466545D1

    公开(公告)日：1987-11-05

    申请号：DE3466545

    申请日：1984-02-17

    Applicant: BASF AG

    Inventor： PIPPER GUNTER ,  THEYSOHN RAINER DR ,  ZAHRADNIK FRANZ DR

    IPC: C08G69/00 ,  C08G69/16

    Abstract: Polylactams are prepared continuously by a process in which a lactam containing from 1 to 25% by weight of water is heated in a prepolymerization zone under a pressure of from 1 to 10 bar at from 220 DEG to 280 DEG C. for 1 to 10 minutes, water being vaporized at the same time, with the proviso that the degree of conversion on emergence from the prepolymerization zone is not less than 85%, the prepolymer and the vapor are separated continuously, and the prepolymer is passed into a polymerization zone and is polymerized further under superatmospheric pressure at from 240 DEG to 290 DEG C.

    Kontinuální zpusob sušení a následné kondenzace polykondenzovaného granulátu, systém k provádení zpusobu a použití systému
    53.
    发明专利
    Kontinuální zpusob sušení a následné kondenzace polykondenzovaného granulátu, systém k provádení zpusobu a použití systému 未知

    公开(公告)号：CZ301886B6

    公开(公告)日：2010-07-21

    申请号：CZ20021885

    申请日：2000-11-29

    Applicant: BASF AG

    Inventor： LUDWIG ALFONS ,  PILLE RAGNHILD ,  PIPPER GUNTER

    IPC: B29B13/06 ,  B29B13/02 ,  F26B17/12 ,  F26B21/14

    Abstract: Zarízení (1) pro sušení a tepelné zpracování granulátu proudem netecného plynu obsahuje hranolovitou základní jednotku (2) se vstupem (3) pro privádení granulátu v její horní cásti a výstupem (4) granulátu v její spodní cásti, s prívodem (5) proudu netecného plynu na jedné bocní ploše a s odtahem (6) proudu netecného plynu na protilehlé bocní ploše hranolovité základní jednotky (2). Zarízení (1) dále obsahuje distribucní a zadržovací príslušenství (7, 8), usporádané v uvedeném poradí, v oblasti prívodu (5) proudu netecného plynu a v oblasti odtahu (6) proudu netecného plynu, pricemž se každé z uvedených príslušenství rozkládá pres v podstate celý úcinný prurez hranolovité základní jednotky (2) ve vertikálním smeru. Sušení probíhá pri teplote 105 až 120 .degree.C s následným ochlazováním a je vhodné zejména pro granuláty polyesteru nebo polyamidu.

    METHOD FOR THE CONTINUOUS PRODUCTION OF COPOLYAMIDES BASED ON A LACTAME (I), A DIAMINE (II) AND A DICARBOXYLIC ACID (III)
    54.
    发明专利
    METHOD FOR THE CONTINUOUS PRODUCTION OF COPOLYAMIDES BASED ON A LACTAME (I), A DIAMINE (II) AND A DICARBOXYLIC ACID (III) 未知

    公开(公告)号：CA2392736C

    公开(公告)日：2007-10-09

    申请号：CA2392736

    申请日：2000-11-15

    Applicant: BASF AG

    Inventor： PIPPER GUNTER ,  LUDWIG ALFONS ,  GOTZ WALTER ,  DEININGER JURGEN

    IPC: C08G69/00 ,  C08J5/18 ,  C08G69/02 ,  C08G69/04 ,  C08G69/14 ,  C08G69/16 ,  C08G69/26 ,  C08G69/28 ,  C08G69/36 ,  C08G69/48 ,  C08G81/00 ,  D01F6/80

    Abstract: The invention relates to a method for the continuous production of copolyamides which are based on a lactame (I), a diamine (II) and a dicarboxylic acid (III). The inventive method is characterised in that a mixture (IV) containing a diamine (II), a dicarboxylic acid (III) and water is converted to a polymer in a first reaction area at a pressure of 1,3*10 5 to 2,5*10 5 Pa in the entry part of the reaction area, at a temperature above the melting point of the polymer (V) and with a degree of conversion of at least 80 % in relation to the molar quantities of diamine (II) and dicarboxylic acid (III), in that a mixture (VI) containing lactame (I) and water is converted to a polymer (VII) in a second reaction area at a pressure of 5*10 5 to 40*10 5 Pa, at a temperature above the melting point of the polymer (VII) and with a degree of conversion of at least 80 % in relation to the molar quantity of lactame (I), in that polymer (V) and polymer (VII) are then reacted with each other in a third reaction area at a pressure of 1*10 5 to 1,5*10 5 Pa in the entry part of the reaction area, at temperatures above the melting temperature of the polymer (VIII), to produce the polymer (VIII). Polymer (VIII) contains a maximum of 10 wt. % constituents that are extractable with water at a temperature of 95.degree.C, in relation to lactame (I), diamine (II) and dicarboxylic acid (III). The polymer (VIII) is then extracted with water so as to obtain the copolyamide. The invention also relates to copolyamides obtained using this method and to the ir use in the production of fibres, sheet structures and moulded bodies which are based on these copolyamides.

    PROCESS FOR PRODUCING POLYAMIDES FROM AMINONITRILES
    55.
    发明专利
    PROCESS FOR PRODUCING POLYAMIDES FROM AMINONITRILES 未知

    公开(公告)号：CA2264023C

    公开(公告)日：2007-03-27

    申请号：CA2264023

    申请日：1997-08-26

    Applicant: BASF AG

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

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

    Abstract: A process for producing a polyamide by reacting at least one aminonitrile wi th water has the following steps: (1) at least one aminonitrile is reacted with water at a temperature from 100 to 360 .degree. C and pressure from 0.1 to 35..times. 10 6 Pa, yielding a reaction mixture; (2) the reaction mixture is further reacted at a temperature from 150 to 400 .degree.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 .degree.C and pressure from 0.1 to 30 .times. 10 6 Pa, yielding a product mixture. Also disclosed are other embodiments of this process and the thus produced polyamides.

    60.
    发明专利
    未知

    公开(公告)号：DE59708777D1

    公开(公告)日：2003-01-02

    申请号：DE59708777

    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.

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