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公开(公告)号：PH12016500129A1
公开(公告)日：2016-04-25
申请号：PH12016500129
申请日：2016-01-20
Applicant: BASF SE
Inventor： SCOTT BARRATT JOHN , ALEKSANDRA JELICIC , PASCAL HESSE , OLIVER SOETJE , ROBERT HASCHICK , EUGENIA FONSECA ZEPEDA GABRIELA , NARAYANAN KEELAPANDAL RAMAMOORTHY SHANKARA , SANDRA JECK , JELAN KUHN
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.
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公开(公告)号：PH12016500108A1
公开(公告)日：2016-04-18
申请号：PH12016500108
申请日：2016-01-18
Applicant: BASF SE
Inventor： ROBERT HASCHICK , ALEKSANDRA JELICIC , SCOTT BARRATT JOHN , PASCAL HESSE , OLIVER SOETJE , EUGENIA FONSECA ZEPEDA GABRIELA , NARAYANAN KEELAPANDAL RAMAMOORTHY SHANKARA , BJORN LANGLOTZ
Abstract: A reverse-phase suspension polymerisation 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 polymerising 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 subjecting the aqueous monomer beads to polymerisation conditions to initiate polymerisation to form polymerising beads, wherein the polymerising beads have formed 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. 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.
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公开(公告)号：PH12015500393A1
公开(公告)日：2015-04-27
申请号：PH12015500393
申请日：2015-02-23
Applicant: BASF SE
Inventor： NARAYANAN KEELAPANDAL RAMAMOORTHY SHANKARA , OLIVER SOETJE , SCOTT BARRATT JOHN , EUGENIA FONSECA ZEPEDA GABRIELA
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 pcnt 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.
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