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公开(公告)号：AT501178T
公开(公告)日：2011-03-15
申请号：AT07820798
申请日：2007-10-02
Applicant: BASF SE
Inventor： LOESCH DENNIS , WEISMANTEL MATTHIAS , KRUEGER MARCO , ZIEMER ANTJE
Abstract: A process for preparing water-absorbing polymer beads by polymerizing droplets comprising at least one monomer in a gas phase surrounding the droplets, the droplets being obtained by enveloping a first monomer solution with a second monomer solution and polymerizing the second monomer solution and polymerizing to give a more highly crosslinked polymer than the first monomer solution.
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公开(公告)号：DE102008043519A1
公开(公告)日：2010-05-12
申请号：DE102008043519
申请日：2008-11-06
Applicant: BASF SE
Inventor： LOESCH DENNIS , WIDMAIER RALF , ABBOUD MOHAMMED
IPC: C08F26/10
Abstract: Preparation of crystalline polyvinylpyrrolidone (I) by radical initiated polymerization in the presence of an initiator, is claimed, where the polymerization is a drop polymerization, provided that the weight ratio of monomer to initiator is selected in such a way that the portion of initiator is 2-40 wt.%, based on the sum of radical initiators and monomers.
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公开(公告)号：ZA200901112B
公开(公告)日：2010-04-28
申请号：ZA200901112
申请日：2009-02-17
Applicant: BASF SE
Inventor： STUEVEN UWE , WEISMANTEL MATTHIAS , HEIDE WILFRIED , KRUEGER MARCO , SEIDL VOLKER , BLEI STEFAN , LOESCH DENNIS , FUNK RUEDIGER , HILLEBRECHT ANNEMARIE
IPC: C08F20100101
Abstract: A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution, comprising monomers bearing acid groups, in a gas phase surrounding the droplets, wherein the monomer solution comprises polyvalent cations and the polymer beads have a mean diameter of at least 150 μm.
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公开(公告)号：DE502004010170D1
公开(公告)日：2009-11-12
申请号：DE502004010170
申请日：2004-07-15
Applicant: BASF SE
Inventor： SCHMID MARKUS , SEIDL VOLKER , DISTLER DIETER , HAEHNLE HANS-JOACHIM , LOESCH DENNIS , MORITZ HANS-ULRICH , KRUEGER MARCO
Abstract: Monomer solutions with a water content of at least 55 wt% are used in a method for the spray polymerisation of monomer solutions containing radically-polymerisable monomers in an inert atmosphere. An independent claim is also included for water-swellable polymers obtained by this method.
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公开(公告)号：AU2021245007A1
公开(公告)日：2022-12-01
申请号：AU2021245007
申请日：2021-03-18
Applicant: BASF SE
Inventor： EL-TOUFAILI FAISSAL-ALI , BARRERA-MEDRANO DANIEL , LOESCH DENNIS , SCHMIDT ANNA-CORINA , GILL KRISTIAN ALEXANDER , ZIMMERMANN TOBIAS JOACHIM
IPC: C08F2/01 , C08F20/56 , C08F220/06 , C08F220/56 , C09K8/588
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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Patent Agency Ranking
公开(公告)号：CO2022013534A2
公开(公告)日：2022-11-29
申请号：CO2022013534
申请日：2022-09-21
Applicant: BASF SE
Inventor： EL-TOUFAILI FAISSAL-ALI , LOESCH DENNIS , ZIMMERMANN TOBIAS JOACHIM , SCHMIDT ANNA-CORINA , BARRERA-MEDRANO DANIEL , GILL KRISTIAN ALEXANDER
IPC: C08F2/01 , C08F20/56 , C08F220/06 , C08F220/56 , C09K8/588
Abstract: Proceso y planta para elaborar poliacrilamidas mediante la polimerización de una solución acuosa que comprende al menos acrilamida y ácido acrílico o sales de estos en presencia de iniciadores para la polimerización por radicales en condiciones adiabáticas, en donde la acrilamida y el ácido acrílico se almacenan en el sitio de la planta como soluciones acuosas diluidas en tanques resistentes a la presión, y también el recipiente de mezcla de monómeros y el recipiente de polimerización son resistentes a la presión. La combinación de usar soluciones diluidas de monómeros y tanques resistentes a la presión asegura que incluso en caso de una polimerización involuntaria e incontrolada, tales recipientes no exploten y no haya derrames fuera de la planta en el medioambiente.
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公开(公告)号：AU2017258560B9
公开(公告)日：2022-05-26
申请号：AU2017258560
申请日：2017-04-20
Applicant: BASF SE
Inventor： JECK SANDRA , SOETJE OLIVER , BRINGMANN TOBIAS , FONSECA ZEPEDA GABRIELA EUGENIA , MECKELNBURG DIRK , LOESCH DENNIS , LANGLOTZ BJOERN , BARRATT JOHN , EL-TOUFAILI FAISSAL-ALI , SCHUBE BERND , OSTERMAYR MARKUS , SPRAFKE HAZEL
IPC: B01F23/50
Abstract: Process and apparatus for producing an aqueous polymer solution comprising the steps of • (a) providing a hydrated polymer that has been prepared by aqueous solution polymerisation of ethylenically unsaturated monomers, which hydrated polymer comprises at least 10% by weight active polymer; • (b) cutting the hydrated polymer by subjecting the hydrated polymerto at least one cutting stage comprising at least one stream of aqueous liquid at a pressure of at least 150 bar to reduce the size of the hydrated polymer, • (c) dissolving the hydrated polymer in an aqueous liquid so as to obtain an aqueous polymer solution.
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公开(公告)号：CO2021004908A2
公开(公告)日：2021-04-30
申请号：CO2021004908
申请日：2021-04-16
Applicant: BASF SE
Inventor： EL-TOUFAILI FAISSAL-ALI , LOESCH DENNIS , OSTERMAYR MARKUS , ZIMMERMANN TOBIAS JOACHIM , SCHMIDT ANNA-CORINA , BUSBY BRENT , TINSLEY JACK
Abstract: RESUMEN Un proceso de fracturamiento de formaciones subterráneas, petrolíferas y/o gasíferas mediante la inyección de un fluido de fractura acuoso en un pozo a una velocidad y presión suficientes para penetrar en la formación, y para iniciar o extender fracturas en la formación, en donde el fluido de fractura acuoso se obtiene mediante la mezcla de al menos un fluido de base acuosa y un concentrado acuoso de poliacrilamida que tiene una concentración de 3,1 a 14,9 % en peso de poliacrilamidas, con respecto al total de todos los componentes del concentrado acuoso de poliacrilamida, y en donde al menos una parte del fluido de fractura acuoso inyectado además comprende un apuntalante.
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公开(公告)号：AU2018354771A2
公开(公告)日：2020-05-28
申请号：AU2018354771
申请日：2018-10-18
Applicant: BASF SE
Inventor： LOESCH DENNIS , ZIMMERMANN TOBIAS JOACHIM , SPRAFKE HAZEL , MECKELNBURG DIRK , OSTERMAYR MARKUS , EL-TOUFAILI FAISSAL-ALI
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：AU2018354767A1
公开(公告)日：2020-04-23
申请号：AU2018354767
申请日：2018-10-18
Applicant: BASF SE
Inventor： SPRAFKE HAZEL , OSTERMAYR MARKUS , ZIMMERMANN TOBIAS JOACHIM , MECKELNBURG DIRK , LOESCH DENNIS , EL-TOUFAILI FAISSAL-ALI
IPC: C08F20/56 , C08F2/01 , C08F220/56 , C12P13/02 , E21B7/00
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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