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公开(公告)号：US20190292330A1
公开(公告)日：2019-09-26
申请号：US16096515
申请日：2017-04-20
Applicant: BASF SE
Inventor： Sandra JECK , Oliver SOETJE , Tobias BRINGMANN , Gabriela Eugenia FONSECA ZEPEDA , Dirk MECKELNBURG , Dennis LOESCH , Bjoern LANGLOTZ , John BARRATT , Faissal-Ali EL-TOUFAILI , Hazel SPRAFKE , Bernd SCHUBE , Markus OSTERMAYR
IPC: C08J3/05 , C08F220/56 , C08F220/04 , B01F5/04 , B01F5/02 , B01F5/20 , B01F7/00
Abstract: A process for producing an aqueous polymer solution, including: (a) providing a hydrated polymer that has been prepared by aqueous solution polymerisation of ethylenically unsaturated monomers, which hydrated polymer contains at least 10% by weight active polymer; (b) cutting the hydrated polymer by subjecting the hydrated polymer to at least one cutting stage containing at least one stream of aqueous liquid at a pressure of at least 150 bar to reduce the size of the hydrated polymer; and (c) dissolving the hydrated polymer in an aqueous liquid so as to obtain an aqueous polymer solution. An apparatus for producing an aqueous polymer solution.
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公开(公告)号：US20190153300A1
公开(公告)日：2019-05-23
申请号：US16096229
申请日：2017-04-25
Applicant: BASF SE
Inventor： Hazel SPRAFKE , Faissal-Ali EL-TOUFAILI , Bjoern LANGLOTZ , John BARRATT , Tobias BRINGMANN , Gabriela Eugenia FONSECA ZEPEDA , Sandra JECK , Dennis LOESCH , Dirk MECKELNBURG , Markus OSTERMAYR , Bernd SCHUBE , Oliver SOETJE
Abstract: A method for preparing an aqueous polyacrylamide solution, where the method includes: hydrating acrylonitrile in water in presence of a biocatalyst capable of converting acrylonitrile to acrylamide so as to obtain an acrylamide solution; directly polymerizing the acrylamide solution so as to obtain a polyacrylamide gel; and directly dissolving the polyacrylamide gel by addition of water so as to obtain an aqueous polyacrylamide solution, wherein the polyacrylamide gel is dissolved by water jet cutting.
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公开(公告)号：US20190144574A1
公开(公告)日：2019-05-16
申请号：US16096169
申请日：2017-04-25
Applicant: BASF SE
Inventor： Hazel SPRAFKE , Faissal-Ali EL-TOUFAILI , Bjoern LANGLOTZ , John BARRATT , Tobias BRINGMANN , Gabriela Eugenia FONSECA ZEPEDA , Sandra JECK , Dennis LOESCH , Dirk MECKELNBURG , Markus OSTERMAYR , Bernd SCHUBE , Oliver SOETJE
Abstract: A method for preparing an aqueous polyacrylamide solution is disclosed. The method comprises:—hydrating acrylonitrile in water in presence of a biocatalyst capable of converting acrylonitrile to acrylamide so as to obtain an acrylamide solution,—directly polymerizing the acrylamide solution so as to obtain a polyacrylamide gel, and—directly dissolving the polyacrylamide gel by addition of water so as to obtain an aqueous polyacrylamide solution.
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公开(公告)号：US20160159958A1
公开(公告)日：2016-06-09
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 , C08J3/12 , B01J19/24 , C08J11/02
CPC classification number: C08F265/04 , B01D61/027 , B01D61/14 , B01D2311/25 , B01D2315/10 , B01J4/002 , B01J19/123 , B01J19/24 , B01J19/243 , B01J2219/0869 , B01J2219/0877 , B01J2219/185 , B01J2219/1923 , B01J2219/24 , C08F2/32 , C08F220/06 , C08F220/20 , C08F220/56 , C08F226/10 , C08F2220/382 , C08F2220/385 , C08J3/12 , C08J11/02 , C08J2351/00 , C08F220/34
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.
Abstract translation: 一种用于制造聚合物珠粒的反相悬浮聚合方法，包括形成包含水溶性烯键式不饱和单体或单体共混物的水溶液的含水单体珠粒，并将单体或单体共混物聚合以形成聚合物珠粒，同时悬浮于非水性 液体，回收聚合物珠粒，然后清洗非水液体，其中该方法包括在容器（1）中提供非水性液体，从非水性单体或单体共混物形成单体珠粒悬浮液 液体，引发聚合以形成聚合珠，从容器中除去非水液体中的聚合物珠的悬浮液，并从悬浮液中回收水溶性或水可溶胀的聚合物珠，其中非水性液体含有包含颗粒的杂质 ，然后将非水性液体从悬浮液转移到清洁阶段，其中清洗步骤 e提供适用于反相悬浮聚合方法的清洁的非水性液体，该清洗阶段包括在至少一个过滤步骤中从非水性液体中除去颗粒。 本发明还涉及适用于进行反相悬浮聚合的装置和可通过该方法获得的聚合物珠粒，或采用该装置。 本发明还涉及通过该方法可获得的清洁的非水性液体。
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