METHOD FOR REMOVING OR COLLECTING 2-ALKOXYETHANOL, AND METHOD FOR PRODUCING (2-ALKOXYETHYL) VINYL ETHER
申请人:MARUZEN PETROCHEMICAL CO., LTD.
公开号:US20190210949A1
公开(公告)日:2019-07-11
To provide a method capable of easily and efficiently removing a 2-alkoxyethanol from a mixture containing the 2-alkoxyethanol and a (2-alkoxyethyl) vinyl ether while suppressing a decrease in the yield of (2-alkoxyethyl) vinyl ether.
A method for removing a 2-alkoxyethanol, including the step of adding one or more azeotropic solvents selected from the group consisting of alkanes having 7 to 8 carbon atoms and cycloalkanes having 7 to 8 carbon atoms to a mixture containing the 2-alkoxyethanol represented by the following formula (1)
R—O—CH
2
CH
2
OH (1)
where R represents an alkyl group having 1 to 4 carbon atoms, and a (2-alkoxyethyl) vinyl ether represented by the following formula (2)
R—O—CH
2
CH
2
O—CH═CH
2
(2)
where R has the same meaning as R in the formula (1),
and subjecting the resulting mixture to azeotropic distillation.
Me 1 hod for removing or collecting 2-alkoxyethanol, and method for producing (2-alkoxyethyl) vinyl ether
申请人:MARUZEN PETROCHEMICAL CO., LTD.
公开号:US11247961B2
公开(公告)日:2022-02-15
To provide a method capable of easily and efficiently removing a 2-alkoxyethanol from a mixture containing the 2-alkoxyethanol and a (2-alkoxyethyl) vinyl ether while suppressing a decrease in the yield of (2-alkoxyethyl) vinyl ether.
A method for removing a 2-alkoxyethanol, including the step of adding one or more azeotropic solvents selected from the group consisting of alkanes having 7 to 8 carbon atoms and cycloalkanes having 7 to 8 carbon atoms to a mixture containing the 2-alkoxyethanol represented by the following formula (1)
R—O—CH2CH2OH (1)
where R represents an alkyl group having 1 to 4 carbon atoms, and a (2-alkoxyethyl) vinyl ether represented by the following formula (2)
R—O—CH2CH2O—CH═CH2 (2)
where R has the same meaning as R in the formula (1),
and subjecting the resulting mixture to azeotropic distillation.