CATALYSTS FOR THE SYNTHESIS OF OXAZOLIDINONE COMPOUNDS

摘要

The present invention relates to a method for the production of oxazolidinone compounds with low colour intensity, comprising the step of reacting an isocyanate compound with an epoxide compound in the presence of a catalyst which is free of halide anions. The invention further relates to a method for the production of oligooxazolidinone and/or polyoxazolidinone compounds, comprising the step of reacting a polyisocyanate compound with a polyepoxide compound in the presence of said catalyst. The invention further relates to oligooxazolidinone and/or polyoxazolidinone compounds with low colour intensity, obtainable by a method according to the invention.

主权项

1. A method for the production of oxazolidinone compounds, comprising reacting an epoxide compound and an isocyanate compound in the presence of a catalyst,
wherein the catalyst is free of halide anions, and comprises a conjugated trigonal-planar anionic moiety having a central atom which is selected from the elements C or N, and three further substituent atoms, which are selected independently of one another from the elements C, N, O, S and/or P, and wherein the overall charge state of the conjugated trigonal-planar anionic moiety is −1 or −2.