发明名称 |
Process for the preparation of N- and O-substituted diurethanes and/or polyurethanes |
摘要 |
Low molecular weight N- and O-substituted diurethanes and/or polyurethanes are prepared by reacting a diamine and/or polyamine containing a primary amino group with an N-aryl-0-alkyl urethane in the presence of at least one high boiling alcohol. This reaction may be carried out at a temperature of from 180 DEG to 350 DEG C. and a pressure of approximately 0.1 to 1,500 mbar. The arylamine corresponding to the N-ary-0-alkyl urethane which forms during this reaction is continuously removed from the reaction mixture.
|
申请公布号 |
US4593117(A) |
申请公布日期 |
1986.06.03 |
申请号 |
US19840678430 |
申请日期 |
1984.12.05 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
KNOEFEL, HARTMUT;PENNINGER, STEFAN;HAMMEN, GUENTHER;HEITKAEMPER, PETER |
分类号 |
C07C269/04;C07C67/00;C07C209/00;C07C209/62;C07C211/44;C07C239/00;C07C271/12;C07C271/24;C07C271/26;C07C271/28;C07C271/44;C08G18/70;(IPC1-7):C07C125/073;C07C125/077 |
主分类号 |
C07C269/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|