公开(公告)号：US11866835B2

公开(公告)日：2024-01-09

申请号：US17779945

申请日：2019-11-25

Applicant: RHODIA OPERATIONS

Inventor： Renate Schwiedernoch ,  Fan Jiang ,  Stephane Streiff ,  Pascal Metivier ,  Dominique Horbez

IPC: C25B3/09 ,  C25B3/23 ,  C25B11/042

CPC classification number: C25B3/09 ,  C25B3/23 ,  C25B11/042

Abstract: The present invention relates to an electrochemical method for converting an amino acid and/or its salts to an amine and/or a nitrile. The total yield and selectivity of amine and nitrile obtained by the method according to the present invention is higher than prior art when the reaction medium has a high concentration of amino acid and/or its salts at the beginning of the reaction.

公开(公告)号：US20230040771A1

公开(公告)日：2023-02-09

申请号：US17787919

申请日：2019-12-20

Applicant: RHODIA OPERATIONS

Inventor： David James Wilson ,  Alexander Lerch ,  Fan Jiang ,  Bing Hong ,  Stephane Streiff

IPC: C08J11/16

Abstract: The instant invention concerns a process for fragmenting a polymer chain, comprising an oxidative degradation step wherein the polymer chain is contacted with a reduced form of a metal M and an oxidant such as dioxygen, and wherein the polymer carries covalently bound chemical groups acting as a ligand of said reduced form of the metal M.
The invention also relates to methods making use of this fragmentation process as a first step of a degradation process of the polymer especially useful for avoiding the negative impact of a polymer to the environment. In this connection, the invention relates to the use of polymers carrying chemical groups acting as a ligand for a reduced form of a metal M, as a polymer biodegradable in an environment wherein the reduced form of a metal M is present.

公开(公告)号：US20230002918A1

公开(公告)日：2023-01-05

申请号：US17779945

申请日：2019-11-25

Applicant: RHODIA OPERATIONS

Inventor： Renate Schwiedernoch ,  Fan Jiang ,  Stephane Streiff ,  Pascal Metivier ,  Dominique Horbez

IPC: C25B3/09 ,  C25B3/29 ,  C25B3/23 ,  C25B11/042

Abstract: The present invention relates to an electrochemical method for converting an amino acid and/or its salts to an amine and/or a nitrile. The total yield and selectivity of amine and nitrile obtained by the method according to the present invention is higher than prior art when the reaction medium has a high concentration of amino acid and/or its salts at the beginning of the reaction.