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    RAPID MIXING POLYMERIZATION PROCESS
    1.
    发明公开
    RAPID MIXING POLYMERIZATION PROCESS 审中-公开

    公开(公告)号：EP4424413A1

    公开(公告)日：2024-09-04

    申请号：EP23158992.0

    申请日：2023-02-28

    申请人： Borealis AG

    发明人： BERGSTRA, Michiel ,  SLEIJSTER, Henry ,  WURNITSCH, Christof

    IPC分类号： B01J19/00 ,  B01J19/18 ,  C08F222/08 ,  B01J19/20

    CPC分类号： B01J19/0066 ,  B01J19/1843 ,  B01J2204/00220130101 ,  B01J19/1875 ,  C08F222/08 ,  B01J2219/0016820130101 ,  B01J19/20 ,  B01F27/861 ,  B01F27/92 ,  B01F27/1921

    摘要： The present invention relates to a process for polymerization of at least one olefin monomer in a polymerization reactor assembly, the polymerization reactor assembly comprising a reactor (1) having a housing (2) defining an inner space (3), the reactor (1) comprising a) at least one inlet (4); b) at least one outlet (5); c) a draft tube (6) having a substantially cylindrical shape and an inner space (7), wherein the draft tube (6) is located within the inner space (3) of the reactor (1) so that an upper opening (10) and a lower opening (11) of the draft tube (6) are fluidly connected with the inner space (3) of the reactor (1), and d) a stirrer (12) located within the inner space (3) of the reactor (1) and comprising a stirrer blade (14) having a helical shape, wherein the axis (8) of the draft tube and the axis (15) of the stirrer blade (14) are coinciding, the stirrer blade (14) extending concentrically with respect to the draft tube (6) and the housing (2) of the reactor (1), and e) secondary mixing means (23) for mixing the fluid inside the reactor (1) by rotating motion, wherein the inner space (3) of the reactor (1) comprises sections A, B, C, and D, wherein section A is the space defined by the upper end of the housing (2) of the reactor (1) and a first plane (10a) oriented transversally to the axis (8) of the draft tube and arranged at the upper end of the stirrer (12), section B is the space defined by the housing (2) of the reactor (1), the outer surface of the draft tube (6), the first plane (10a) and a second plane (11a) oriented transversally to the axis (8) of the draft tube and arranged at the lower opening (11) of the draft tube (6), section C is the space defined by the lower end of the housing (2) of the reactor (1) and the second plane (11a), and section D is the inner space (7) of the draft tube (6), wherein the stirrer (12) is rotatable inside the housing (2) of the reactor (1) to provide a mixing motion to fluids if present inside the reactor (1), the process comprising the steps of I. introducing the at least one olefin monomer, at least one polymerization catalyst, and at least one solvent via the at least one inlet (4) into section C to form a reaction mixture, II. rotating the stirrer (12) to force at least a part of the reaction mixture from section C via section B to section A and from section A via section D to section C, III. thereby polymerizing the at least one olefin monomer forming a polymer in said reaction mixture, IV. withdrawing at least a part of the reaction mixture via the at least one outlet (5) from section A to obtain an olefin polymer as a product.

    PVA CURING MACHINE
    3.
    发明公开
    PVA CURING MACHINE 审中-实审

    公开(公告)号：EP4349472A1

    公开(公告)日：2024-04-10

    申请号：EP22937279.2

    申请日：2022-12-15

    申请人： Tianhua Institute Of Chemical Machinery & Automation Co., Ltd ,  Tianhua Institute (Nanjing) Intelligent Manufacturing Co., Ltd

    发明人： DOU, Yan ,  ZHAO, Xu ,  LI, Peng ,  MA, Yaohong ,  YANG, Shaohua ,  HAN, Dongzhao ,  LEI, Menglong ,  XIE, Xiaoling ,  LUO, Jian

    IPC分类号： B01F35/45 ,  B01J19/20 ,  B01J4/00 ,  B01J19/00 ,  B01F27/1145

    摘要： The present disclosure relates to the field of curing equipment, and discloses a polyvinyl alcohol (PVA) curing machine, including a thermally conductive housing provided with material inlets configured to add additives, where a material outlet is provided in one end of the thermally conductive housing; and a heat tracing mechanism arranged on the thermally conductive housing and configured to heat the thermally conductive housing and heat materials through the thermally conductive housing. By arranging the heat tracing mechanism, the curing machine provided by the present disclosure can effectively control a temperature of an alcoholysis reaction; by providing the plurality of material inlets, different additives can be added according to actual market requirements, such that a molar ratio of alkali added in alcoholysis, a concentration of a vinyl acetate methanol solution, and water content are adjustable; and thus, preparation of polyvinyl alcohol products with different specifications can be implemented by reprocessing a polyvinyl alcohol product prepared by an existing alcoholysis apparatus with the PVA curing machine provided by the present disclosure. Therefore, preparation of polyvinyl alcohol products with various specifications can be implemented by arranging the PVA curing machine provided by the present disclosure.

    REAKTIVEXTRUSION VON TPU UNTER ZUFÜHRUNG VON WASSER
    10.
    发明公开
    REAKTIVEXTRUSION VON TPU UNTER ZUFÜHRUNG VON WASSER 审中-公开

    公开(公告)号：EP3838396A1

    公开(公告)日：2021-06-23

    申请号：EP19216814.4

    申请日：2019-12-17

    申请人： Covestro Deutschland AG

    发明人： Die Erfindernennung liegt noch nicht vor

    IPC分类号： B01J19/20 ,  B29B7/84 ,  B29C48/29 ,  B29C48/76 ,  B29C48/92 ,  B29C67/24 ,  C08G18/08 ,  C08G18/10

    摘要： Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines thermoplastischen Polyurethans aus einem OH-funktionellen Prepolymer und einem Isocyanat mittels Reaktivextrusion.
    Des Weiteren betrifft die Erfindung eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens. Ferner betrifft die Erfindung ein thermoplastisches Polyurethan erhältlich oder erhalten durch das erfindungsgemäße Verfahren sowie die Verwendung des thermoplastischen Polyurethans in einem Formgebungsverfahren unter Aufschmelzen des thermoplastischen Polyurethans, insbesondere zur Herstellung von Innenraumbauteilen von Fahrzeugen.