PROCESS FOR PRODUCING ETHYLENE GLYCOL CATALYZED BY IONIC LIQUID
申请人:Zhang Suojiang
公开号:US20130072727A1
公开(公告)日:2013-03-21
Disclosed is a process for producing ethylene glycol catalyzed by an ionic liquid, characterized in that the process includes the following three steps: (a) a carbonylation step of ethylene oxide and CO
2
catalyzed by an ionic liquid composite catalyst comprising a hydroxyl functionalized ionic liquid and an alkali metal salt under an aqueous condition to produce ethylene carbonate and ethylene glycol; (b) a hydrolysis step of reacting the reaction solution containing ethylene carbonate and the ionic liquid composite catalyst obtained in step (a) with water to produce ethylene glycol; (c) a purification step of dehydrating and refining ethylene glycol from the aqueous solution containing ethylene glycol and the catalyst produced in step (b). The present process has the following advantages: the catalyst has high activity, high suitability, and good stability, the reaction condition is wild, the conversion of ethylene oxide is high, the selectivity of ethylene glycol is high, and the process is simple.
[EN] ZWITTERIONIC NON-LINEAR OPTOPHORES AND DEVICES INCORPORATING SAME<br/>[FR] OPTOPHORES ZWITTERIONIQUES NON LINEAIRES ET DISPOSITIFS EQUIPES DE CES OPTOPHORES
申请人:IND RES LTD
公开号:WO2004111043A1
公开(公告)日:2004-12-23
The invention relates to zwitterionic second order non-linear optophores comprising a compound of general Formula I: wherein D is selected from: and L and R1-R5 are as herein defined. Also, provided are polymeric compositions incorporating these compounds. These optophores display a large and efficient non-linear optical response and therefore can be used in the production of optoelectronic devices.
Zwitterionic Non-Linear Optophores And Devices Incorporating Same
申请人:Kay John Andrew
公开号:US20070208182A1
公开(公告)日:2007-09-06
The invention relates to zwitterionic second order non-linear optophores comprising a compound of general Formula I: wherein D is selected from: and L and R1-R5 are as herein defined. Also, provided are polymeric compositions incorporating these compounds. These optophores display a large and efficient non-linear optical response and therefore can be used in the production of optoelectronic devices.