The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2014
Filed:
Nov. 19, 2009
Se-won Baek, Daejeon, KR;
Hyun-kyu Kim, Daejeon, KR;
Jun-seok Ko, Daejeon, KR;
Kyoung-su Ha, Anyang-si, KR;
Sung-koo Park, Daejeon, KR;
Dong-hyun Woo, Daejeon, KR;
Se-Won Baek, Daejeon, KR;
Hyun-Kyu Kim, Daejeon, KR;
Jun-Seok Ko, Daejeon, KR;
Kyoung-Su Ha, Anyang-si, KR;
Sung-Koo Park, Daejeon, KR;
Dong-Hyun Woo, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
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.