公开(公告)号：AU2015326907A1

公开(公告)日：2017-04-06

申请号：AU2015326907

申请日：2015-09-30

Applicant: BASF SE

Inventor： BRAUN MICHAEL ,  DAEUWEL JUERGEN ,  LANG HANS-JUERGEN ,  OEDMAN PETER ,  BALDENIUS KAI-UWE ,  KLEINER MATTHIAS ,  KIEFER MICHAEL ,  FREYER STEPHAN ,  BUDDE MICHAEL

IPC: C12P13/02

Abstract: The present invention relates to methods for preparing an aqueous acrylamide solution having a low acrylic acid concentration. In addition, the present invention relates to methods for reducing the acrylic acid concentration of an aqueous acrylamide solution. The methods involve a bioconversion of acrylonitrile to acrylamide in the presence of a biocatalyst, wherein during the bioconversion the content of acrylonitrile is maintained at 0.3 w/w % or more referred to the total weight of the composition in the reactor. Also provided is an aqueous acrylamide solution which is obtained by the methods of the present invention. Furthermore, the present invention is related to an acrylamide homopolymer or copolymer obtained by polymerizing the acrylamide of the aqueous solution.

公开(公告)号：CA2962510A1

公开(公告)日：2016-04-07

申请号：CA2962510

申请日：2015-09-30

Applicant: BASF SE

Inventor： BRAUN MICHAEL ,  DAEUWEL JUERGEN ,  LANG HANS-JUERGEN ,  OEDMAN PETER ,  BALDENIUS KAI-UWE ,  KLEINER MATTHIAS ,  KIEFER MICHAEL ,  FREYER STEPHAN ,  BUDDE MICHAEL

IPC: C12P13/02 ,  C12N9/88

Abstract: The present invention relates to methods for preparing an aqueous acrylamide solution having a low acrylic acid concentration. In addition, the present invention relates to methods for reducing the acrylic acid concentration of an aqueous acrylamide solution. The methods involve a bioconversion of acrylonitrile to acrylamide in the presence of a biocatalyst, wherein during the bioconversion the content of acrylonitrile is maintained at 0.3 w/w % or more referred to the total weight of the composition in the reactor. Also provided is an aqueous acrylamide solution which is obtained by the methods of the present invention. Furthermore, the present invention is related to an acrylamide homopolymer or copolymer obtained by polymerizing the acrylamide of the aqueous solution.

公开(公告)号：CO2017004030A2

公开(公告)日：2017-09-20

申请号：CO2017004030

申请日：2017-04-26

Applicant: BASF SE

Inventor： BRAUN MICHAEL ,  DAEUWEL JUERGEN ,  LANG HANS-JUERGEN ,  OEDMAN PETER ,  BALDENIUS KAI-UWE ,  KLEINER MATTHIAS ,  KIEFER MICHAEL ,  FREYER STEPHAN ,  BUDDE MICHAEL

IPC: C12P13/02

Abstract: La presente invención se refiere a métodos para preparar una solución acuosa de acrilamida que tiene una baja concentración de ácido acrílico. Asimismo, la presente invención se refiere a métodos para reducir la concentración de ácido acrílico de una solución acuosa de acrilamida. Los métodos incluyen una bioconversión de acrilonitrilo en acrilamida en presencia de un biocatalizador, en donde, durante la bioconversión, el contenido de acrilonitrilo se mantiene a 0,3 % p/p o más con respecto al peso total de la composición en el reactor. También se proporciona una solución acuosa de acrilamida que se obtiene mediante los métodos de la presente invención. Además, la presente invención se refiere a un homopolímero o copolímero de acrilamida que se obtiene mediante polimerización de la acrilamida de la solución acuosa.

公开(公告)号：AU2015326907B2

公开(公告)日：2019-07-04

申请号：AU2015326907

申请日：2015-09-30

Applicant: BASF SE

Inventor： LANG HANS-JUERGEN ,  OEDMAN PETER ,  BALDENIUS KAI-UWE ,  KLEINER MATTHIAS ,  KIEFER MICHAEL ,  FREYER STEPHAN ,  BUDDE MICHAEL ,  BRAUN MICHAEL ,  DAEUWEL JUERGEN

IPC: C12P13/02

Abstract: The present invention relates to methods for preparing an aqueous acrylamide solution having a low acrylic acid concentration. In addition, the present invention relates to methods for reducing the acrylic acid concentration of an aqueous acrylamide solution. The methods involve a bioconversion of acrylonitrile to acrylamide in the presence of a biocatalyst, wherein during the bioconversion the content of acrylonitrile is maintained at 0.3 w/w % or more referred to the total weight of the composition in the reactor. Also provided is an aqueous acrylamide solution which is obtained by the methods of the present invention. Furthermore, the present invention is related to an acrylamide homopolymer or copolymer obtained by polymerizing the acrylamide of the aqueous solution.