Invention Grant
- Patent Title: Breaking a methanol/methyl methacrylate azeotrope using pressure swing distillation
-
Application No.: US15521798Application Date: 2015-10-02
-
Publication No.: US10144698B2Publication Date: 2018-12-04
- Inventor: John G. Pendergast , William G. Worley , Stacy W. Hoy, IV , Jacob M. Crosthwaite
- Applicant: DOW GLOBAL TECHNOLOGIES LLC , ROHM AND HAAS COMPANY
- Applicant Address: US MI Midland US PA Collegeville
- Assignee: Dow Global Technologies LLC,Rohm and Haas Company
- Current Assignee: Dow Global Technologies LLC,Rohm and Haas Company
- Current Assignee Address: US MI Midland US PA Collegeville
- Agency: Husch Blackwell LLP
- International Application: PCT/US2015/053663 WO 20151002
- International Announcement: WO2016/069198 WO 20160506
- Main IPC: C07C67/54
- IPC: C07C67/54 ; C07C29/82 ; B01D3/00 ; B01D3/14 ; B01D3/36

Abstract:
A methanol/MMA azeotrope is broken or avoided by a method comprising the steps of (1) raising the pressure within a first vessel, e.g., a distillation column, that contains a methanol/MMA azeotrope, (2) collecting the azeotrope as a liquid, and then in a second, separate vessel, e.g., another distillation column, (3) raising the pressure sufficiently to allow for the breaking of or avoidance of the azeotrope and the recovery of the methanol.
Public/Granted literature
- US20170247313A1 Breaking a Methanol/Methyl Methacrylate Azeotrope Using Pressure Swing Distillation Public/Granted day:2017-08-31
Information query