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.

公开(公告)号：US20200347155A1

公开(公告)日：2020-11-05

申请号：US16759141

申请日：2018-10-18

Applicant: BASF SE

Inventor： Tobias Joachim ZIMMERMANN ,  Michael SINZINGER ,  Mirjam SCHWARZ ,  Veronika ERL ,  Alexander KRONAST

IPC: C08F2/10 ,  C08F220/58 ,  C08F220/56 ,  C08F216/14 ,  C09K8/68 ,  C09K8/88 ,  C09K8/588

Abstract: Process for producing hydrophobically associating polyacrylamides Summary Process of manufacturing hydrophobically associating polyacrylamides comprising at least acrylamide or derivatives thereof and an associative monomer by adiabatic gel polymerization of an aqueous monomer solution, wherein the concentration of the monomers in the aqueous solution is from 1 mole/kg to 3.3 mole/kg, relating to the total of all components of the aqueous monomer solution. The process yields hydrophobically associating polyacrylamides having an improved viscosity efficiency. Hydrophobically associating polyacrylamides obtainable by the process of the present invention and use of such hydrophobically associating polyacrylamides for oilfield applications, in particular for enhanced oil recovery, conformance control and hydraulic fracturing.

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.

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.

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.

公开(公告)号：US20200369811A1

公开(公告)日：2020-11-26

申请号：US16759244

申请日：2018-10-18

Applicant: BASF SE

Inventor： Tobias Joachim ZIMMERMANN ,  Faissal-Ali EL-TOUFAILI ,  Hazel SPRAFKE

IPC: C08F220/56 ,  C08J3/07 ,  C08K5/47 ,  C08K5/3435 ,  C09K8/588 ,  C09K8/68 ,  C12P13/02 ,  E21B43/20 ,  E21B43/267

Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide obtained by hydrolyzing acrylonitrile in water in the presence of a biocatalyst capable of converting acrylonitrile to 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 aqueous polyacrylamide gel furthermore comprises at least one stabilizer for prevention of polymer degradation.

公开(公告)号：US20220403426A1

公开(公告)日：2022-12-22

申请号：US17774463

申请日：2020-11-04

Applicant: BASF SE

Inventor： Diego GHISLIERI ,  Peter OEDMAN ,  Tobias Joachim ZIMMERMANN

IPC: C12P13/02 ,  C12N9/88 ,  C12N1/20 ,  C12N1/04

Abstract: The present invention relates to a method of storing a biocatalyst, which biocatalyst is capable of converting acrylonitrile to acrylamide, comprising the steps: (a) providing an aqueous suspension comprising the biocatalyst, which is capable of converting acrylonitrile to acrylamide, which aqueous suspension is an aqueous fermentation broth; (b) sequentially in either order or simultaneously (b) concentrating the aqueous suspension comprising the biocatalyst to a concentration of at least 3% (w/w); and (b2) reducing the temperature of the aqueous suspension comprising the biocatalyst to a temperature of below 8° C., thereby forming a concentrated aqueous suspension; and (c) maintaining the concentrated aqueous suspension of step (b) at a temperature of below 8° C. The invention also relates to a biocatalyst composition obtainable by this method and also the use of the biocatalyst composition in a process of preparing (meth-) acrylamide aqueous solution from (meth-) acrylonitrile. The invention further relates to a method for producing an aqueous (meth-) acrylamide solution comprising the aforementioned storage method and also to a method for producing polyacrylamide comprising the aforementioned storage method.

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

IPC: C08L33/26 ,  C09K8/588 ,  E21B43/16

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.

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

IPC: C08F2/01 ,  C08F20/44 ,  C08F20/56 ,  C08F2/16 ,  C08F6/24

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.