公开(公告)号：US20230312462A1

公开(公告)日：2023-10-05

申请号：US18023747

申请日：2021-08-23

Applicant: BASF SE

Inventor： Jan Pablo JOSCH ,  Matthias HINRICHS ,  Jens FERBITZ ,  Kai THIELE ,  Torsten MATTKE ,  Stefan MAIXNER

IPC: C07C263/10

CPC classification number: C07C263/10

Abstract: The invention relates to a process for producing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, comprising: (a) mixing an amine comprising feed stream, a phosgene comprising feed stream and optionally an inert solvent; (b) reacting the amine with phosgene in a first reaction section to obtain an intermediate reaction mixture comprising isocyanate, carbamoyl chlorides, amine hydrochlorides and unreacted phosgene; (c) cleaving the carbamoyl chlorides and remove phosgene from the intermediate reaction mixture in a second reaction section to obtain an isocyanate comprising crude product, (d) optionally working-up the crude product; wherein reacting (b) is carried out such that the intermediate reaction mixture comprises 1.7 to 5 mol-% solid amine hydrochlorides based on the molar amount of amine fed into the process.

公开(公告)号：US20210002210A1

公开(公告)日：2021-01-07

申请号：US16499686

申请日：2018-04-04

Applicant: BASF SE

Inventor： Sven TITLBACH ,  Andreas KUSCHEL ,  Carlos LIZANDARA ,  Stephan A. SCHUNK ,  Joerg ROTHER ,  Juergen BECHTEL ,  Nedko Stefanov DREBOV ,  Stefan MAIXNER ,  Matthias HINRICHS ,  Mohamed HALABI ,  Imke Britta MUELLER ,  Michaela FENYN

IPC: C07C263/14 ,  B01J23/656 ,  B01J37/02 ,  B01J37/08 ,  B01J23/889

Abstract: A process for preparing an aromatic isocyanate by direct carbonylation of a nitro aromatic compound by reacting the nitro aromatic compound with carbon monoxide in the presence of a catalyst, characterized in that the catalyst contains a multi metallic material comprising one or more binary intermetallic phases of the general formula AxBy wherein: A is one or more element selected from Ni, Ru, Rh, Pd, Ir, Pt and Ag, B is one or more element selected from Sn, Sb, Pb, Zn, Ga, In, Ge and As, x is in the range 0.1-10, y in is in the range 0.1-10.

公开(公告)号：US20230131205A1

公开(公告)日：2023-04-27

申请号：US17979955

申请日：2022-11-03

Applicant: BASF SE

Inventor： Sven TITLBACH ,  Andreas KUSCHEL ,  Carlos LIZANDARA ,  Stephan A. SCHUNK ,  Joerg ROTHER ,  Juergen BECHTEL ,  Nedko Stefanov DREBOV ,  Stefan MAIXNER ,  Matthias HINRICHS ,  Mohamed HALABI ,  Imke Britta MUELLER ,  Michaela FENYN

IPC: C07C263/14 ,  B01J23/656 ,  B01J23/889 ,  B01J37/02 ,  B01J37/08

Abstract: A process for preparing an aromatic isocyanate by direct carbonylation of a nitro aromatic compound by reacting the nitro aromatic compound with carbon monoxide in the presence of a catalyst, characterized in that the catalyst contains a multi metallic material comprising one or more binary intermetallic phases of the general formula AxBy wherein: A is one or more element selected from Ni, Ru, Rh, Pd, Ir, Pt and Ag, B is one or more element selected from Sn, Sb, Pb, Zn, Ga, In, Ge and As, x is in the range 0.1-10, y in is in the range 0.1-10.

公开(公告)号：US20180346414A1

公开(公告)日：2018-12-06

申请号：US16057482

申请日：2018-08-07

Applicant: BASF SE

Inventor： Manfred HEILIG ,  Thomas SCHULZ ,  Torsten MATTKE ,  Filip NEVEJANS ,  Kai THIELE ,  Stefan MAIXNER

IPC: C07C263/10 ,  C07C265/12

CPC classification number: C07C263/10 ,  C07C265/12

Abstract: The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.