发明名称 |
REVERSE-PHASE POLYMERISATION PROCESS |
摘要 |
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. |
申请公布号 |
WO2015014824(A1) |
申请公布日期 |
2015.02.05 |
申请号 |
WO2014EP66251 |
申请日期 |
2014.07.29 |
申请人 |
BASF SE |
发明人 |
BARRATT, JOHN, SCOTT;JELICIC, ALEKSANDRA;HESSE, PASCAL;SOETJE, OLIVER;HASCHICK, ROBERT;FONSECA ZEPEDA, GABRIELA, EUGENIA;KEELAPANDAL RAMAMOORTHY, SHANKARA, NARAYANAN;JECK, SANDRA;KUHN, JELAN |
分类号 |
C08F2/32;B01D29/00;C08F20/56;C08J11/02 |
主分类号 |
C08F2/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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