Title:
有機カーボネートの製造方法
Document Type and Number:
Japanese Patent JP4653093
Kind Code:
B2
Abstract:
The invention relates to a method for the production of monomer organic carbonates from a mixture of organic carbonates and carbamates which are obtained by reacting urea, substituted urea, a salt or ester of carbamide acid or one of the N-substituted derivatives thereof with a polyalkylene glycol, polyester-polyol or a polyether-polyol of general formula (I), wherein R represents a linear or branched alkylene group having 2-12 carbon atoms and n represents a number between 2 and 20, or with a completely or partially hydrolysed polyvinyl alcohol of general formula (II), wherein R' represents an alkyl group, an aryl group or an acyl group having 1-12 carbon atoms, p and q represent a number between 120, or with mixtures of said compounds in the presence of a catalyst facilitating the separation of ammonia and the ammonia becomes free or the amine is removed from the reaction mixture by means of a strip gas, whereby said mixture is reacted with an alcohol or a phenol whereby monomer carbonates are formed and polymer polyalcohols of formulae (I) or (II) are reformed.
Inventors:
Buholt Henning
Aberhard Jürgen
Wagner Ulrich
Werk Hans-Jurgen
Aberhard Jürgen
Wagner Ulrich
Werk Hans-Jurgen
Application Number:
JP2006525644A
Publication Date:
March 16, 2011
Filing Date:
July 16, 2004
Export Citation:
Assignee:
Lulugi Gamebha
International Classes:
C07C68/00; C07C68/06; C07C69/96; C07B61/00
Domestic Patent References:
| JP2007505052A | ||||
| JP7330686A | ||||
| JP7053470A |
Attorney, Agent or Firm:
Mitsufumi Esaki
Blacksmith
Katsunori Uenishi
Ichiro Torayama
Blacksmith
Katsunori Uenishi
Ichiro Torayama