申请人:MINISTERO DELL' UNIVERSITA' E DELLA RICERCA SCIENTIFICA E TECNOLOGICA
公开号:EP0752414A1
公开(公告)日:1997-01-08
A process is described for the preparation of aromatic urethanes in which an organic carbonate in a stoichiometric quantity or in a quantity higher than the stoichiometric value is reacted with an aromatic amine operating in the presence of a carbamation catalyst, wherein this catalyst is selected from zinc and/or copper carbonate hydroxide.
The process gives high yields and selectivity in the useful reaction product.
本发明描述了一种制备芳香族聚氨酯的工艺,在该工艺中,一定量或高于一定量的有机碳酸盐与芳香族胺在碳化催化剂存在下反应,其中碳化催化剂选自锌和/或氢氧化碳酸铜。
该工艺可获得高产率和高选择性的有用反应产物。