公开(公告)号：US20240182626A1

公开(公告)日：2024-06-06

申请号：US18555434

申请日：2022-04-14

Applicant: BASF SE

Inventor： Frederic Lucas ,  Tobias Gienau ,  Stephan Dohmen ,  Lennart Karl Bernhard Garve ,  Frank Schaefer

IPC: C08G18/09 ,  C08G18/18 ,  C08G18/48

CPC classification number: C08G18/095 ,  C08G18/1875 ,  C08G18/4833

Abstract: A process can be used for the preparation of a carbodiimide and/or a polycarbodiimide, where the process is particularly essentially free of an alkali metal. The carbodiimide and/or polycarbodiimide obtained and/or obtainable by the process and uses thereof are also provided.

公开(公告)号：US20250115703A1

公开(公告)日：2025-04-10

申请号：US18727374

申请日：2023-01-10

Applicant: BASF SE

Inventor： Frederic Lucas ,  Tobias Gienau ,  Stephan Dohmen ,  Lennart Karl Bernhard Garve ,  Frank Schaefer

IPC: C08G18/22 ,  C08G18/28 ,  C08G18/75 ,  C08G18/76

Abstract: A process for preparing a carbodiimide includes (i) providing a mixture including one or more isocyanates and a catalytic compound, and (ii) subjecting the mixture obtained in (i) to reaction conditions in a gas atmosphere. The catalytic compound includes a metal and oxygen, wherein the metal is one or more of Mo and W. and at least a portion of the metal in the catalytic compound is bound to oxygen via one or more single bonds, via one or more double bonds, or via one or more single and double bonds. The reaction conditions in the gas atmosphere take place at a temperature in a range of from 45 to 220° C.