反应详情

温度

100 °C

Agitated in a reaction vessel are 210 parts of 4,4'-diaminodicyclohexylmethane with 360 parts of O-octyl carbamate and 150 parts of n-octanol-(1) at a reflux temperature of 185° C.-205° C. for 2 hours while the ammonia is removed by means of distillation. At this point, an additional 650 parts of n-octanol are allowed to flow into the reaction mixture and the reaction is continued at reflux temperature for 10 hours. The reaction mixture, which has been cooled to 100° C., is filtered, and the product is allowed to crystallize by cooling the filtrate. By filtration, washing with octanol and drying, 468 parts of bis(4-octoxycarbonylaminocyclohexyl)methane, C31H58N2O4 (molecular weight 522) are obtained corresponding with 89.6 percent theory relative to 4,4'-bisaminodicyclohexylmethane. The melting point is 129° C.-130° C.

1. customat a reflux temperature of 185° C.-205° C.
2. customfor 2 hours
3. customis removed by means of distillation
4. temperatureat reflux temperature for 10 hours
5. filtrationis filtered
6. customto crystallize
7. temperatureby cooling the filtrate
8. filtrationBy filtration
9. washwashing with octanol
10. customdrying