Invention Grant
- Patent Title: Method of recovering (meth) acrylic acid ester
- Patent Title (中): 回收(甲基)丙烯酸酯的方法
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Application No.: US13055425Application Date: 2009-11-19
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Publication No.: US08772534B2Publication Date: 2014-07-08
- Inventor: Se-Won Baek , Hyun-Kyu Kim , Jun-Seok Ko , Kyoung-Su Ha , Sung-Koo Park , Dong-Hyun Woo
- Applicant: Se-Won Baek , Hyun-Kyu Kim , Jun-Seok Ko , Kyoung-Su Ha , Sung-Koo Park , Dong-Hyun Woo
- Applicant Address: KR Seoul
- Assignee: LG Chem, Ltd.
- Current Assignee: LG Chem, Ltd.
- Current Assignee Address: KR Seoul
- Agency: McKenna, Long & Aldridge LLP
- Priority: KR10-2008-0115393 20081119
- International Application: PCT/KR2009/006835 WO 20091119
- International Announcement: WO2010/058983 WO 20100527
- Main IPC: C07C69/54
- IPC: C07C69/54 ; C07C67/48

Abstract:
The present invention provides a method of recovering a (meth)acrylic acid ester, which comprises the steps of: (a) carrying out an esterification reaction between an alcohol and (meth)acrylic acid in the presence of a catalyst to obtain a (meth)acrylic acid ester, wherein a byproduct is generated together with the (meth)acrylic acid ester; and (b) subjecting the byproduct generated in step (a) to a reaction with a catalyst and water in a reactor, wherein the water is fed into the reactor in order that water content exceeds 0 wt % but is 10 wt % or less in the reactor based on the total weight of reactants comprising the byproduct, the catalyst and the water, and thereby separating the (meth)acrylic acid, the alcohol and the (meth)acrylic acid ester contained in the byproduct from the byproduct to obtain the (meth)acrylic acid, the alcohol and the (meth)acrylic acid ester as a recovered product.
Public/Granted literature
- US20110230675A1 METHOD OF RECOVERING (METH) ACRYLIC ACID ESTER Public/Granted day:2011-09-22
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