| abstract |
A method of producing ethylene glycol ethyl ethers by reacting ethylene oxide withnmonoethylene glycol diethyl ether or its mixture with higher diethyl ethersnglycols or ethanol, with a molar ratio of ethers to ethylene oxide of 3: 1 -1: 1,nin the presence of 0.3-0.8% by weight of triethylamine or other alkaline catalyst, wntemperature increased to about 100 ° C and under increased pressure to 0.5 MPa, anunreacted diethyl ether separated from the reaction mixture by distillationnThe monoethylene glycol and water are recycled to the ethoxylation process characterizednwater is fed directly to the ethoxylation reactor or from a streamn% of the raw material in an amount of 3-10% by weight of the raw material to be ethoxylated. |