Title (en)

PHOSGENE SYNTHESIS BY CONVERSION OF A GAS MIXTURE CONTAINING CHLORINE AND CARBON MONOXIDE ON AN ORGANIC CATALYST CONTAINING CHLORIDE ANIONS

Title (de)

PHOSGENSYNTHESE DURCH UMSETZUNG EINES CHLOR UND KOHLENSTOFFMONOXID ENTHALTENDEN GASGEMISCHES AN ORGANISCHEM, CHLORANION-HALTIGEN KATALYSATOR

Title (fr)

SYNTHÈSE DE PHOSGÈNE PAR RÉACTION D'UN MÉLANGE GAZEUX CONTENANT DU CHLORE ET DU MONOXYDE DE CARBONE SUR UN CATALYSEUR ORGANIQUE CONTENANT DES ANIONS CHLORE

Publication

EP 4259576 A1 20231018 (DE)

Application

EP 21835749 A 20211213

Priority

• EP 20213938 A 20201214
• EP 2021085547 W 20211213

Abstract (en)

[origin: WO2022128950A1] The invention relates to a method for producing phosgene, comprising at least the steps of: a) bringing a gas mixture containing carbon monoxide and chlorine into contact with a catalyst, the catalyst containing at least one ionic organic compound which contains monochloride anions and, on contact with chlorine, forms an ionic organic compound containing polychloride anions; b) converting the gas mixture into phosgene on the catalyst. With the invention, phosgene can be produced using less activation energy and in high yields without the use of conventional activated carbon catalysts.

IPC 8 full level

C01B 32/80 (2017.01)

CPC (source: EP US)

C01B 32/80 (2017.07 - EP US)

Citation (search report)

See references of WO 2022128950A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4011830 A1 20220615; CN 116547237 A 20230804; EP 4259576 A1 20231018; US 2024025753 A1 20240125; WO 2022128950 A1 20220623

DOCDB simple family (application)

EP 20213938 A 20201214; CN 202180083897 A 20211213; EP 2021085547 W 20211213; EP 21835749 A 20211213; US 202118256475 A 20211213