Invention Grant
- Patent Title: Method for producing alkyl (meth)acrylates
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Application No.: US15329910Application Date: 2015-06-22
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Publication No.: US09975842B2Publication Date: 2018-05-22
- Inventor: Anne Moreliere , Gilles Frimour , Jean-Michel Paul , Stephane Denis
- Applicant: Arkema France
- Applicant Address: FR Colombes
- Assignee: ARKEMA FRANCE
- Current Assignee: ARKEMA FRANCE
- Current Assignee Address: FR Colombes
- Agency: RatnerPrestia
- Priority: FR1457262 20140728
- International Application: PCT/FR2015/051648 WO 20150622
- International Announcement: WO2016/016528 WO 20160204
- Main IPC: C07C67/48
- IPC: C07C67/48 ; C07C67/08 ; C07C67/54

Abstract:
The present invention relates to a method for producing a C4-C10 alkyl (meth)acrylate, by direct esterification of (meth)acrylic acid by the corresponding alcohol, the reaction water being removed in the form of an azeotrope with the esterification alcohol from a distillation column mounted over the esterification reactor comprising a cationic resin as a catalyst. Said method is characterized in that the molar ratio of alcohol to acid at the inlet of the reactor is between 1.4 and 3, and in that the crude reaction mixture circulates in a recirculation loop joining the reactor and the water removal column, at a recirculation rate of between 6 and 25, expressed by the mass ratio between the flow fed into the loop and the flow sent to a purification treatment.
Public/Granted literature
- US20170267624A1 IMPROVED METHOD FOR PRODUCING ALKYL (METH)ACRYLATES Public/Granted day:2017-09-21
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