公开(公告)号：US11198669B2

公开(公告)日：2021-12-14

申请号：US16772628

申请日：2017-12-21

Applicant: RHODIA OPERATIONS ,  BASF FRANCE SAS

Inventor： Mengjia Wu ,  Stéphane Streiff ,  Sergio Mastroianni

IPC: C07C209/68 ,  C07C211/12 ,  C25B3/29

Abstract: The present invention relates to a method for preparing primary diamines from amino acid compounds. Specifically, this invention is related to the preparation of a primary diamine from an amino acid and/or its salt by Kolbe electrolysis coupling reaction.

公开(公告)号：US11897779B2

公开(公告)日：2024-02-13

申请号：US17269795

申请日：2019-08-06

Applicant: RHODIA OPERATIONS ,  EAST CHINA NORMAL UNIVERSITY

Inventor： Fangzheng Su ,  Stéphane Streiff ,  Laurent Garel ,  Peng Wu ,  Jianyong Yin ,  Xinqing Lu

IPC: C01B39/02 ,  C01B39/06 ,  B01J29/70

CPC classification number: C01B39/023 ,  B01J29/70 ,  C01B39/065 ,  C01P2006/14 ,  C01P2006/16

Abstract: It relates to a microporous aluminotitanosilicate crystalline zeolite, method of preparation and applications thereof. It extends to a catalytic hydroxylation, by reaction of a compound of formula (I) with H2O2 in the presence of a catalyst comprising the zeolite.

公开(公告)号：US11753362B2

公开(公告)日：2023-09-12

申请号：US17612088

申请日：2019-06-04

Applicant: RHODIA OPERATIONS

Inventor： Zhen Yan ,  Bright Kusema ,  Sergio Mastroianni ,  Stéphane Streiff ,  Philippe Marion

IPC: C07C51/27

CPC classification number: C07C51/27 ,  C07C51/27 ,  C07C59/06 ,  C07C51/27 ,  C07C59/153

Abstract: The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepares organic acid, notably glycolic acid and/or glyoxylic acid in a high yield based on bio-based feedstocks.

公开(公告)号：US11441105B2

公开(公告)日：2022-09-13

申请号：US16771520

申请日：2017-12-15

Applicant: RHODIA OPERATIONS

Inventor： Bing Hong ,  Alexander Lerch ,  Stéphane Streiff ,  Peng Fei Ji ,  Armin T. Liebens

IPC: C11D1/00 ,  C11D3/20 ,  C11D3/28 ,  C11D3/39 ,  C11D3/395 ,  C11D11/00 ,  C11D17/04 ,  C11D3/34

Abstract: Provided is the use of a lanthanide metal complex as a bleaching catalyst. In particular, the lanthanide metal complex comprises a ligand which is an aromatic compound having at least one electron withdrawing substituent and at least one nucleophilic group. Provided is also a composition containing the lanthanide metal complex.