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    METHOD FOR PROCESSING PARTICULATE RAW POLYOXYMETHYLENE
    2.
    发明申请
    METHOD FOR PROCESSING PARTICULATE RAW POLYOXYMETHYLENE 审中-公开
    一种用于处理颗粒ROHPOLYOXYMETHYLEN

    公开(公告)号：WO2013020830A3

    公开(公告)日：2013-05-30

    申请号：PCT/EP2012064767

    申请日：2012-07-27

    Applicant: BASF SE ,  DEININGER JUERGEN ,  DEMETER JUERGEN ,  HAEFFNER RUEDIGER ,  SCHULZ RALF ,  STAMMER ACHIM

    Inventor： DEININGER JUERGEN ,  DEMETER JUERGEN ,  HAEFFNER RUEDIGER ,  SCHULZ RALF ,  STAMMER ACHIM

    IPC: C08G2/18 ,  C08G2/00 ,  C08G2/38 ,  C08L59/00

    CPC classification number: C08G2/00 ,  C08G2/18 ,  C08G2/38 ,  C08L59/00

    Abstract: The invention relates to a method for processing particulate raw polyoxymethylene, comprising the following steps: (a) adding the particulate raw polyoxymethylene to an extraction column (13), wherein the extraction column (13) is operated at a pressure in the range from 1 to 6 bar; (b) adding a polar extracting agent to the extraction column (13) at a temperature in the range from 95 to 140 °C and a pressure in the range from 1 to 6 bar, wherein 10 to 1000 ppm, in relation to the added quantity of polar extracting agent, of a buffer substance that buffers in the pH range from 7.5 to 11.5 is added to the extraction column.

    Abstract translation: 本发明涉及一种用于颗粒状Rohpolyoxymethylen的处理的方法，包括以下步骤：（a）将颗粒状Rohpolyoxymehtylens在萃取塔（13），其中，所述萃取柱（13）以在1的范围内的压力下操作至6巴，（ b）加入一种极性萃取剂（以在95至140℃的温度下萃取柱13）和在该范围内的压力为1〜6巴，其中（在萃取塔13）10至1000ppm，基于提供给 极性萃取剂的量，其缓冲在pH范围为7.5至11.5的缓冲剂，加入。

    DEVICE FOR SYNTHESIZING A POLYMER WITH REDUCED FORMATION OF DEPOSITS IN THE REACTION CHAMBER
    5.
    发明专利
    DEVICE FOR SYNTHESIZING A POLYMER WITH REDUCED FORMATION OF DEPOSITS IN THE REACTION CHAMBER 未知

    公开(公告)号：CA2913521C

    公开(公告)日：2021-10-05

    申请号：CA2913521

    申请日：2014-06-11

    Applicant: BASF SE

    Inventor： ZHU NING ,  STAMMER ACHIM ,  CLAUSS JOACHIM ,  WITT UWE ,  KORY GAD ,  BIEDASEK SILKE

    IPC: B01J19/00 ,  B01J4/00 ,  B01J19/18 ,  B01J19/20 ,  C08G69/00

    Abstract: The invention relates to a process for synthesizing a polymer with separation of a gaseous substance in an apparatus comprising: a reactor chamber having a substantially circular cylindrical upper section which is delimited by two circular surfaces and a circumferential surface and has a longitudinal cylinder axis, and a lower section; an inlet opening; a first outlet opening; a second outlet opening; and a removal device movable along the longitudinal cylinder axis at least between the second circular surface and the inlet opening, and contacts the circumferential surface. The invention further relates to a method comprising: feeding an oligomer melt into the circular cylindrical first section of the reaction chamber; polymerizing the oligomer melt to form a polymer melt; removing the polymer melt from the reaction chamber; and removing a gaseous substance from the reaction chamber. Deposits in the reaction chamber are removed by a removal device.

    DEVICE AND METHOD FOR SYNTHESIS OF A POLYMER UNDER SEPARATION OF A GASEOUS SUBSTANCE
    6.
    发明专利
    DEVICE AND METHOD FOR SYNTHESIS OF A POLYMER UNDER SEPARATION OF A GASEOUS SUBSTANCE 未知

    公开(公告)号：CA2913501C

    公开(公告)日：2021-09-14

    申请号：CA2913501

    申请日：2014-06-11

    Applicant: BASF SE

    Inventor： ZHU NING ,  STAMMER ACHIM ,  CLAUSS JOACHIM ,  KORY GAD

    IPC: B01J19/00 ,  B01J19/18 ,  C08G69/00

    Abstract: The invention relates to a device for synthesis of a polymer under separation of a gaseous substance. Said device comprises a reaction chamber (1), which has a top section (11), a middle section (12) and a bottom section (13), an inlet opening (2) which is arranged in the middle section (12), a first outlet opening (3) which is arranged in the bottom section (13), a second outlet opening (4) which is arranged in the top section (11), a first return opening (51), which is arranged in the bottom section (13), a second outlet opening (52), which is arranged under the top section (11), a distribution device (6), which is arranged between the top section (11) and the middle section (12), and a removal device (7) which is arranged to be movable along the top section (11). The invention further relates to a method for synthesis of a polymer which can be carried out in said device.

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