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    PROCESS FOR PRODUCING POLYAMIDES FROM AMINONITRILES
    1.
    发明申请
    PROCESS FOR PRODUCING POLYAMIDES FROM AMINONITRILES 审中-公开
    一种从氨基腈PRODUCING聚酰胺

    公开(公告)号：WO9808889A2

    公开(公告)日：1998-03-05

    申请号：PCT/EP9704640

    申请日：1997-08-26

    Applicant: BASF AG ,  WEISS ROBERT ,  KRAUSS DIETER ,  KELLER DIETER ,  PIPPER GUNTER ,  HARDER WOLFGANG ,  LUDWIG ALFONS ,  MOHRSCHLADT RALF

    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

    CPC classification number: 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 DEG C and pressure from 0.1 to 35.x 10 Pa, yielding a reaction mixture; (2) the reaction mixture is further reacted at a temperature from 150 to 400 DEG 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 DEG C and pressure from 0.1 to 30 x 10 Pa, yielding a product mixture. Also disclosed are other embodiments of this process and the thus produced polyamides.

    Abstract translation: 一种用于通过至少一个氨基腈与水反应，包括下列步骤制备聚酰胺过程：（1）在100至360摄氏度的温度和0.1〜35×10的压力<至少一个氨基腈与水反应 6> Pa至获得得到的反应混合物，（2）进一步在150〜400℃和压力是比在步骤1中的压力更低的温度下的反应混合物反应，所述温度和压力被选择为使得 该第一气相和第一液体或第一固相或第一固体和第一液相的混合物获得，并从所述第一液体或第一固相或第一液体和第1固相的混合物中的第一气体相分离出 是，（3）将第一液体或第一固相或第一液体和第1固相的与气态或混合物 含有液体相包含水，在150〜360℃的温度和0.1〜30×10 <6> Pa的压力以获得产物混合物中获得，以及这样的方法的其它实施例中，将如此制备的 聚酰胺本身。

    CONTINUOUS POLYAMIDE EXTRACTION PROCESS
    2.
    发明申请
    CONTINUOUS POLYAMIDE EXTRACTION PROCESS 审中-公开
    连续提取聚酰胺的方法

    公开(公告)号：WO9926996A3

    公开(公告)日：1999-09-02

    申请号：PCT/EP9807575

    申请日：1998-11-24

    Applicant: BASF AG ,  ERBES JOERG ,  LUDWIG ALFONS ,  PIPPER GUNTER

    Inventor： ERBES JOERG ,  LUDWIG ALFONS ,  PIPPER GUNTER

    IPC: C08J3/12 ,  B01D11/02 ,  B29B9/16 ,  C08G69/04 ,  C08G69/16 ,  C08G69/46

    CPC classification number: C08G69/46 ,  B01D11/0242 ,  C08G69/04 ,  C08G69/16

    Abstract: A process is disclosed for continuously extracting polyamide particles from a circulating extraction solution in a vertical extraction column subdivided into two zones. The polyamide is treated in the first zone with an aqueous epsilon -caprolactam solution with 40-95 wt. % epsilon -caprolactam as extraction agent at 100 to 140 DEG C, then subsequently treated with water in the second zone. Finally, the caprolactam can be extracted in a manner known per se. The process allows polyamide with a low dimer content to be economically produced.

    Abstract translation: 本发明涉及一种用于聚酰胺粒子的连续萃取的方法与引导在循环萃取溶液在垂直，分成两个区萃取柱，其中，所述聚酰胺的ε-在与含水的ε--Caprolactamlösung与40中的第一区，以95重量％的己内酰胺 作为萃取剂在100至140℃下处理，然后在第二区域中用水进行后处理。 随后，可以以常规方式提取己内酰胺。 该方法可以经济地生产低二聚体含量的聚酰胺。

    METHOD AND DEVICE FOR DRYING AND SUBSEQUENT CONDENSATION OF POLYCONDENSATE IN SOLID FORM
    4.
    发明专利
    METHOD AND DEVICE FOR DRYING AND SUBSEQUENT CONDENSATION OF POLYCONDENSATE IN SOLID FORM 未知

    公开(公告)号：BG64353B1

    公开(公告)日：2004-11-30

    申请号：BG10674402

    申请日：2002-05-28

    Applicant: BASF AG

    Inventor： LUDWIG ALFONS ,  PILLE RAGNHILD ,  PIPPER GUNTER

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

    Abstract: The method and the device are used for drying and subsequent condensation of polycondesate granulate, in particular for polyester or polyamide granulate, preferably of polyamide 6-granulate. By the method, in one of more devices, the polycondensate is dried and heated in the range between the minimum temperature of 105 to 120 degrees C and maximum temperature of 2 degrees C below the temperature of its softening, is treated in a retaining device and is cooled in a cooling device. The installation includes at least one device (1) for drying and thermal treatment of granulate in an inert gas stream. It has a cuboidal base body (2) with an inlet hole (3) for the granulate in the upper part, and an outlet hole (4) in the lower part. The device has an inlet hole (5) on a side surface, and an outlet hole (6) on the opposite side surface of the cuboidal base body (2) for the inert gas. A distribution and back retention device (7, 8) are found in the zone of holes (5 and 6) for the inert gas stream which substantially extend over the total vertical cross-section of base body (2).

    6.
    发明专利
    未知

    公开(公告)号：DE50001889D1

    公开(公告)日：2003-05-28

    申请号：DE50001889

    申请日：2000-06-05

    Applicant: BASF AG

    Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  LUDWIG ALFONS

    IPC: C08G69/04 ,  C08G69/16 ,  C08G69/18 ,  C08G69/20

    Abstract: A process for producing polyamides by reacting at least one lactam and optionally further polyamide-forming monomers with aqueous monomer and oligomer extracts obtained during the extraction with water of the polymer product obtained in the production of polyamides, the water content of the reaction mixture being in the range from 0.5 to 13% by weight comprises conducting the reaction in the presence of metal oxides, beta-zeolites, sheet-silicates or silica gels, which may be doped, as heterogeneous catalysts, the heterogeneous catalysts being used in the form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of the polymerization or after it has ended.

    METHOD FOR PREPARING POLYAMIDES FROM LACTAMS AND POLYAMIDE EXTRACTS
    9.
    发明专利
    METHOD FOR PREPARING POLYAMIDES FROM LACTAMS AND POLYAMIDE EXTRACTS 未知

    公开(公告)号：HU0201520A2

    公开(公告)日：2002-08-28

    申请号：HU0201520

    申请日：2000-06-05

    Applicant: BASF AG

    Inventor： HILDEBRANDT VOLKER ,  LUDWIG ALFONS ,  MOHRSCHLADT RALF

    IPC: C08G69/04 ,  C08G69/16 ,  C08G69/18 ,  C08G69/20

    Abstract: A process for producing polyamides by reacting at least one lactam and optionally further polyamide-forming monomers with aqueous monomer and oligomer extracts obtained during the extraction with water of the polymer product obtained in the production of polyamides, the water content of the reaction mixture being in the range from 0.5 to 13% by weight comprises conducting the reaction in the presence of metal oxides, beta-zeolites, sheet-silicates or silica gels, which may be doped, as heterogeneous catalysts, the heterogeneous catalysts being used in the form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of the polymerization or after it has ended.

    10.
    发明专利
    未知

    公开(公告)号：BR0015986A

    公开(公告)日：2002-08-27

    申请号：BR0015986

    申请日：2000-11-15

    Applicant: BASF AG

    Inventor： DEININGER J RGEN ,  GOTZ WALTER ,  LUDWIG ALFONS ,  PIPPER GUNTER

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

    Abstract: A process for continuous production of copolyamides based on a lactam (I), a diamine (II) and a dicarboxylic acid (III) comprisesreacting a mixture (IV) comprising a diamine (II), a dicarboxylic acid (III) and water in a first reaction zone at a pressure in the range from 1.3*10 to 2.5*10 Pa in the entry zone of the reaction zone and at a temperature above the melting point of polymer (V) to a conversion, based on the molar amounts of diamine (II) and dicarboxylic acid (III), of at least 80% to form a polymer (V),reacting a mixture (VI) comprising lactam (I) and water in a second reaction zone at a pressure in the range from 5*10 to 40*10 Pa and at a temperature above the melting point of polymer (VII) to a conversion, based on the molar amount of lactam (I), of at least 80% to form a polymer (VII),then reacting polymer (V) and polymer (VII) with each other in a third reaction zone at a pressure in the range from 1*10 to 1.5*10 Pa in the entry zone of the reaction zone at temperatures above the melting point of polymer (VIII) to form a polymer (VIII), said polymer (VIII) having a 95° C. water extractables content, based on lactam (I), diamine (II) and dicarboxylic acid (III), of not more than 10% by weight, andthen extracting the polymer (VIII) with water to obtain the copolyamide.

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