Invention Grant
- Patent Title: Method for the distillative separation of a mixture containing vinyl ether and alchol
- Patent Title (中): 含有乙烯基醚和醇的混合物的蒸馏分离方法
-
Application No.: US10560135Application Date: 2004-06-08
-
Publication No.: US07670464B2Publication Date: 2010-03-02
- Inventor: Katrin Klass , Heike Becker , Regina Vogelsang , Alexander Hauk , Markus Siegert , Jochem Henkelmann
- Applicant: Katrin Klass , Heike Becker , Regina Vogelsang , Alexander Hauk , Markus Siegert , Jochem Henkelmann
- Applicant Address: DE Ludwigshafen
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE10326403 20030612
- International Application: PCT/EP2004/006160 WO 20040608
- International Announcement: WO2004/110970 WO 20041223
- Main IPC: B01D3/36
- IPC: B01D3/36 ; C07C29/82 ; C07C41/42 ; C07C43/16 ; C07C41/08

Abstract:
Process for distillatively separating a mixture containing a vinyl ether of the general formula (I) R1—O—CH═CH2 (I) and alcohol of the general formula (II) R2—OH (II) in which R1 and R2 are each independently a saturated or unsaturated, aliphatic or cycloaliphatic radical having from 2 to 10 carbon atoms, and in which the alcohol (II) has a boiling point which is at least 1° C. higher, measured at or extrapolated to 0.1 MPa abs, than the vinyl ether (I), by a) passing the mixture into a first distillation column and withdrawing, as a top product, an azeotrope containing vinyl ether (I) and alcohol (II) and, as a bottom product, a stream enriched with the alcohol (II); b) passing the azeotrope containing vinyl ether (I) and alcohol (II) from the first distillation column into a second distillation column which is operated at a pressure which is from 0.01 to 3 MPa higher compared to the first distillation column, and withdrawing, as a bottom product or gaseous sidestream in the stripping section, the vinyl ether (I) and, as a top product, an azeotrope containing vinyl ether (I) and alcohol (II); and c) recycling the azeotrope containing vinyl ether (I) and alcohol (II) from the second distillation column into the first distillation column.
Public/Granted literature
- US20060151310A1 Method for the distillative separation of a mixture containing vinyl ether and alchol Public/Granted day:2006-07-13
Information query