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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：US20230128528A1
公开(公告)日：2023-04-27
申请号：US17913449
申请日：2021-03-18
Applicant: BASF SE
Inventor： Faissal-Ali EL-TOUFAILI , Daniel BARRERA-MEDRANO , Dennis LOESCH , Anna-Corina SCHMIDT , Kristian Alexander GILL , Tobias Joachim ZIMMERMANN
IPC: C08F220/56 , C08F220/06 , B01J13/00
Abstract: Process and a plant for making polyacrylamides by polymerizing an aqueous solution comprising at least acrylamide and acrylic acid or salts thereof in the presence of initiators for radical polymerization under adiabatic conditions, wherein acrylamide and acrylic acid are stored at the site of the plant as dilute aqueous solutions in pressure-resistant tanks and also the monomer mixing vessel and the polymerization vessel are pressure-resistant. The combination of using diluted monomer solutions and pressure-resistant tanks ensures that even in case of an unintended and uncontrolled polymerization, said vessels don't burst and there is no spill out of the plant to the environment.
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公开(公告)号：US20200283675A1
公开(公告)日：2020-09-10
申请号：US16759158
申请日：2018-10-18
Applicant: BASF SE
Inventor： Hazel SPRAFKE , Tobias Joachim ZIMMERMANN , Dirk MECKELNBURG , Dennis LOESCH , Markus OSTERMAYR , Faissal-Ali EL-TOUFAILI
IPC: C09K8/588 , C08F220/56 , C08F220/06 , C08J3/075 , C08J3/07 , C08K5/00
Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide gel hold in a transportable polymerization unit from a location A to a location B. The transportable polymerization unit comprises a cylindrical upper part, a conical part at its lower end, feeds for the aqueous monomer solution, a closable bottom opening, and means allowing to deploy the polymerization unit in a vertical manner.
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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：US20210179758A1
公开(公告)日：2021-06-17
申请号：US16759179
申请日：2018-10-18
Applicant: BASF SE
Inventor： Hazel SPRAFKE , Markus OSTERMAYR , Tobias Joachim ZIMMERMANN , Dirk MECKELNBURG , Dennis LOESCH , Faissal-Ali EL-TOUFAILI
IPC: C08F220/56 , C08F220/06 , C08F228/02 , C08F230/02 , C08F2/01 , C08F2/10 , C09K8/88 , C08F6/00
Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the process is carried out in a modular, relocatable plant. The plant preferably is deployed at a location at which aqueous polyacrylamide solutions are used, for example on an oilfield or in a mining area.
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Patent Agency Ranking
公开(公告)号：US20210070904A1
公开(公告)日：2021-03-11
申请号：US16759223
申请日：2018-10-18
Applicant: BASF SE
Inventor： Dennis LOESCH , Tobias Joachim ZIMMERMANN , Hazel SPRAFKE , Dirk MECKELNBURG , Markus OSTERMAYR , Faissal-Ali EL-TOUFAILI
IPC: C08F220/56
Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide gel hold in a transportable polymerization unit from a location A to a location B. Modular, relocatable plant for manufacturing aqueous polyacrylamide solutions wherein the units of the plant are located at two different locations A and B.
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公开(公告)号：US20230174685A1
公开(公告)日：2023-06-08
申请号：US17922793
申请日：2021-04-26
Applicant: BASF SE
Inventor： Dennis LOESCH , Esther Matyka LARYEA , Anna-Corina SCHMIDT , Faissal-Ali EL-TOUFAILI , Daniel BARRERA-MEDRANO , Markus OSTERMAYR
IPC: C08F6/00 , C08F220/56
CPC classification number: C08F6/008 , C08F220/56
Abstract: Process for producing aqueous compositions of water-soluble polymers from aqueous polymer gels by comminuting and mixing the aqueous polymer gel with an aqueous liquid by means of a comminution unit comprising a flow-chamber, a sheet-like molding tool and rotating cutting means, wherein a stream of an aqueous liquid flows through the flow chamber, aqueous polymer gel is pressed through the sheet-like molding tool, cutting the thus formed gel strands into slices, dispersing them in the aqueous liquid and homogenizing the thus obtained mixture.
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公开(公告)号：US20210347977A1
公开(公告)日：2021-11-11
申请号：US17286477
申请日：2019-10-17
Applicant: BASF SE
Inventor： Faissal-Ali EL-TOUFAILI , Dennis LOESCH , Anna-Corina SCHMIDT , Tobias Joachim ZIMMERMANN , Markus OSTERMAYR , Jack F. TINSLEY , Brent BUSBY , Daniel BARRERA-MEDRANO
Abstract: Process of providing polyacrylamides to a site-of-use comprising at least the steps of mixing a polyacrylamide powder at a manufacturing site with an aqueous liquid, thereby obtaining a homogeneous aqueous polyacrylamide concentrate, transporting said concentrate in a transport unit from the manufacturing site to the site-of-use, and removing the homogeneous aqueous concentrate from the transport unit at the site-of-use. Process of treating subterranean, oil and/or gas bearing formations by injecting an aqueous treatment fluid into at least one wellbore, wherein the aqueous treatment fluid is manufactured by mixing at least an aqueous base fluid with said homogeneous aqueous polyacrylamide concentrate at the site-of-use.
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公开(公告)号：US20200308314A1
公开(公告)日：2020-10-01
申请号：US16759206
申请日：2018-10-18
Applicant: BASF SE
Inventor： Hazel SPRAFKE , Dirk MECKELNBURG , Dennis LOESCH , Markus OSTERMAYR , Tobias Joachim ZIMMERMANN , Faissal-Ali EL-TOUFAILI
Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous monomer premix from a location A to a location B. Modular, relocatable plant for manufacturing aqueous polyacrylamide solutions wherein the units of the plant are located at two different locations A and B.
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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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