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1.发明公开公开(公告)号：US20240043626A1
公开(公告)日：2024-02-08
申请号：US18257549
申请日：2020-12-14
Applicant: RHODIA OPERATIONS , LE CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE , UNIVERSITE DE LILLE , CENTRALE LILLE INSTITUT
Inventor： Dan Wu , Vitaly Ordomsky , Andrei Khodakov , Stephane Streiff , Jianxia Zheng
CPC classification number: C08H6/00 , B01J23/462 , B01J21/18 , B01J27/13 , B01J21/08 , B01J23/44 , C07C37/54 , C07C1/22
Abstract: A method for the selective cleavage of a compound comprising an aromatic ring and a C—O—C linkage in the presence of a heterogeneous catalyst is provided. The heterogenous catalyst may be a supported noble metal catalyst doped with a halogen selected from the group consisting of chlorine and bromine. By using this method, it is possible to increase the selectivity and/or yield (preferably both) of aromatic compounds.
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公开(公告)号：US20240051910A1
公开(公告)日：2024-02-15
申请号：US18259002
申请日：2021-12-22
Applicant: RHODIA OPERATIONS
Inventor： Fangzheng Su , Isabelle Storet , Stephane Streiff
IPC: C07C51/367 , C07C59/06 , B01J23/44 , B01J25/02 , B01J21/18
CPC classification number: C07C51/367 , C07C59/06 , B01J23/44 , B01J25/02 , B01J21/18
Abstract: A method for producing glycolic acid includes selectively hydrogenating glyoxylic acid using a catalyst comprising at least one transition metal element, the glycolic acid produced, which has a bio-based carbon content of above 50%. A method for preparing a composition selected from the group consisting of cosmetics, home care products, personal care products, textiles, food, beverages, drugs, fragrances, inks, or paints includes adding the glycolic acid to the composition.
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公开(公告)号：US20230022284A1
公开(公告)日：2023-01-26
申请号：US17779934
申请日：2019-11-25
Applicant: RHODIA OPERATIONS
Inventor： Renate Schwiedernoch , Stephane Streiff , Pascal Metivier , Dominique Horbez
IPC: C07C45/41
Abstract: The present invention relates to an electrochemical method for preparing vanillin or its derivatives in the presence of a mediator. The mediator can be recycled and reused and therefore no salt is formed by the end of the reaction, which makes the method more environmental-friendly. Furthermore, lower potentials are needed when the mediator is used by comparing to prior arts.
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Patent Agency Ranking
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.
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公开(公告)号：US20220396595A1
公开(公告)日：2022-12-15
申请号：US17770003
申请日：2020-10-15
Applicant: RHODIA OPERATIONS
Inventor： Bing Hong , Galder Cristobal , Stephane Streiff , Katerina Karagianni
Abstract: Provided are new metal complexes having phenolic and macrocyclic amino ligands as well as to their use, in particular use for bleaching catalyst for detergent compositions and oxidative crosslinking catalyst for resins, containing said metal complexes. A formulation comprises at least a detergent, a metal complex, and optionally a source of hydrogen peroxide.
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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.
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公开(公告)号：US20230048219A1
公开(公告)日：2023-02-16
申请号：US17782978
申请日：2019-12-06
Applicant: RHODIA OPERATIONS
Inventor： Willinton Yesid Hernandez Enciso , Stephane Streiff
IPC: C07C211/07 , C07C211/08 , C07C209/50 , B01J21/04 , B01J21/08 , B01J23/22 , B01J23/46
Abstract: The present invention relates to a process for converting an amide into an amine comprising hydrogenation of the amide at a temperature not higher than 130° C. and a hydrogen pressure not higher than 50 bar in the presence of a supported heterogeneous catalyst preparable by a method comprising depositing vanadium on a supported noble metal catalyst by impregnation.
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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.
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