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    Reverse-phase polymerization process
    1.
    发明授权
    Reverse-phase polymerization process 有权

    公开(公告)号：US10370461B2

    公开(公告)日：2019-08-06

    申请号：US14908872

    申请日：2014-07-29

    Applicant: BASF SE

    Inventor： Pascal Hesse ,  Aleksandra Jelicic ,  Gabriela Eugenia Fonseca Zepeda ,  Robert Haschick ,  Shankara Narayanan Keelapandal Ramamoorthy ,  Gareth Ian Naylor ,  John Scott Barratt ,  Oliver Soetje ,  Marcel Lievre ,  Florian Rainau ,  Mark Lebkuecher

    IPC: C08F2/32 ,  C08F220/56 ,  B01J19/10 ,  C08F2/01 ,  C08F220/06 ,  C08F220/20 ,  C08F226/10 ,  C08F220/38

    Abstract: A reverse-phase suspension polymerization process for the manufacture of polymer beads comprising forming aqueous monomer beads comprising an aqueous solution of water-soluble ethylenically unsaturated monomer or monomer blend and polymerizing the monomer or monomer blend, to form polymer beads while suspended in a non-aqueous liquid, and recovering polymer beads, in which the process comprises providing in a vessel (1) a volume (2) of non-aqueous liquid wherein the volume of non-aqueous liquid extends between at least one polymer bead discharge point (3) and at least one monomer feed point (4), feeding the aqueous monomer or monomer blend through orifices (5) into, or onto, the non-aqueous liquid to form aqueous monomer beads, allowing the aqueous monomer beads to flow towards the polymer bead discharge point initiating polymerization of the aqueous monomer beads to form polymerizing beads, wherein the polymerizing beads form polymer beads when they reach the polymer bead discharge point, removing a suspension of the polymer beads in non-aqueous liquid from the vessel at the polymer bead discharge point and recovering, water soluble or water swellable polymer beads from the suspension, in which the aqueous monomer or monomer blend and/or the orifices is/are vibrated such that the frequency multiplied by the weight average droplet diameter is between 150 and 800 mm/s. The invention also relates to the apparatus suitable for carrying out a reverse-phase suspension polymerization and polymer beads obtainable by the process or employing the apparatus. Furthermore, the invention also relates to polymer beads having a weight mean particle size in the range of 0.05 to 5 mm which are held in a container in an amount of at least 300 kg having a standard deviation of particle size less than 20%. In addition, the invention also provides polymer beads having a weight mean particle size in the range 0.05 to 5 mm having a standard deviation of particle size less than 20% and having an amount of residual acrylamide of less than 500 ppm.

    Reverse-phase polymerisation process
    3.
    发明授权
    Reverse-phase polymerisation process 有权

    公开(公告)号：US10604611B2

    公开(公告)日：2020-03-31

    申请号：US14908823

    申请日：2014-07-29

    Applicant: BASF SE

    Inventor： John Scott Barratt ,  Aleksandra Jelicic ,  Pascal Hesse ,  Oliver Soetje ,  Robert Haschick ,  Gabriela Eugenia Fonseca Zepeda ,  Shankara Narayanan Keelapandal Ramamoorthy ,  Sandra Jeck ,  Jelan Kuhn

    IPC: C08F265/04 ,  C08J11/02 ,  C08F2/32 ,  B01J19/12 ,  B01D61/14 ,  B01J19/24 ,  B01J4/00 ,  B01D61/02 ,  C08J3/12 ,  C08F220/56 ,  C08F220/20 ,  C08F220/06 ,  C08F220/38 ,  C08F226/10

    Abstract: A reverse-phase suspension polymerisation process for the manufacture of polymer beads comprising forming aqueous monomer beads of an aqueous solution comprising water-soluble ethylenically unsaturated monomer or monomer blend and polymerising the monomer or monomer blend to form polymer beads while suspended in a non-aqueous liquid, recovering polymer beads, and then cleaning the non-aqueous liquid in which the process comprises providing the non-aqueous liquid in a vessel (1), forming a suspension of monomer beads from the aqueous monomer or monomer blend in the non-aqueous liquid, initiating polymerisation to form polymerising beads, removing a suspension of the polymer beads in non-aqueous liquid from the vessel and recovering, water soluble or water swellable polymer beads from the suspension, in which the non-aqueous liquid contains impurities which comprise particles, and then transferring the non-aqueous liquid from the suspension to a cleaning stage, in which the cleaning stage provides a cleaned non-aqueous liquid suitable for use in a reverse-phase suspension polymerisation process, which cleaning stage comprises removing particles from the non-aqueous liquid in at least one filtration step. The invention also relates to the apparatus suitable for carrying out a reverse-phase suspension polymerisation and polymer beads obtainable by the process or employing the apparatus. The invention further relates to a cleaned non-aqueous liquid obtainable by the process.

    Process for producing polymers
    6.
    发明授权
    Process for producing polymers 有权
    生产聚合物的方法

    公开(公告)号：US09382364B2

    公开(公告)日：2016-07-05

    申请号：US14425432

    申请日：2013-09-23

    Applicant: BASF SE

    Inventor： Shankara Narayanan Keelapandal Ramamoorthy ,  Oliver Soetje ,  John Scott Barratt ,  Gabriela Eugenia Fonseca Zepeda

    IPC: C08F2/00 ,  C08F20/00 ,  C08F20/06 ,  B01J19/18 ,  C08F222/38 ,  C08F222/02 ,  C08F222/10 ,  B01J19/24

    CPC classification number: C08F222/38 ,  B01J19/245 ,  B01J2219/24 ,  C08F2/001 ,  C08F2/01 ,  C08F220/06 ,  C08F220/34 ,  C08F220/56 ,  C08F222/02 ,  C08F222/10 ,  C08F220/32 ,  C08F220/04

    Abstract: A process for preparation of a polymer product comprising the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers into a first reactor device (2) through at least one inlet; ii) partially polymerising the monomer or monomers and transferring the polymerising monomer or mixture of monomers from the inlet to an outlet (3) of the first reactor device (2) to provide a partially polymerised product; iii) flowing the partially polymerised product out of the outlet (3), in which no more than 60% of the monomer or mixture of monomers has been polymerised in the partially polymerised product as it exits the outlet (3) of first reactor device (2), and transferring it to a further reactor device (5), in which the further reactor device (5) has an inlet and an outlet (6); iv) continuing the polymerisation in the further reactor device (5) and removing the polymer product from the outlet (6) of the further reactor device (5), characterised in that the first reactor device (2) comprises a positive displacement pump.

    Abstract translation: 一种制备聚合物产品的方法，包括以下步骤：i）通过至少一个入口将包含单烯属不饱和单体或单烯属不饱和单体的混合物的含水混合物进料到第一反应器装置（2）中; ii）部分聚合单体或单体并将聚合单体或单体混合物从入口转移到第一反应器装置（2）的出口（3），以提供部分聚合的产物; iii）将部分聚合的产物流出出口（3），其中当部分聚合的产物离开第一反应器装置的出口（3）时，部分聚合的产物中不超过60％的单体或单体混合物聚合 2），并将其转移到另外的反应器装置（5）中，其中所述另外的反应器装置（5）具有入口和出口（6）; iv）继续在另外的反应器装置（5）中进行聚合并从另外的反应器装置（5）的出口（6）除去聚合物产物，其特征在于第一反应器装置（2）包括容积式泵。

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