IDiyas

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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.:

US 10266475 B1

PDFFull Text
Date of Patent:
Apr. 23, 2019

Filed:

Jan. 31, 2017

Method for producing acrylic acid

Applicants:

Lg Chem, Ltd., Seoul, KR;

Korea Advanced Institute of Science and Technology, Daejeon, KR;

Inventors:

Won Jae Lee, Daejeon, KR;

Dong Su Song, Daejeon, KR;

Yong Jin Choe, Daejeon, KR;

Hyun Joo Lee, Daejeon, KR;

Min Su Kim, Daejeon, KR;

Assignee:

LG CHEM, LTD., Seoul, KR;

Attorney:

Dentons US LLP

Primary Examiner:

Paul A Zucker

Int. Cl.
CPC ...
C07C 51/25 (2006.01); C07C 51/44 (2006.01); C07C 51/50 (2006.01); C07C 57/04 (2006.01); B01J 23/44 (2006.01); B01J 23/58 (2006.01); B01J 23/60 (2006.01); B01J 23/66 (2006.01); B01J 23/68 (2006.01); B01J 23/74 (2006.01); B01J 23/78 (2006.01); B01J 23/80 (2006.01); B01J 23/89 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 35/08 (2006.01); B01J 37/00 (2006.01); B01J 37/02 (2006.01); B01J 23/46 (2006.01); B01J 23/52 (2006.01); B01J 37/16 (2006.01);
U.S. Cl.
CPC ...
C07C 51/25 (2013.01); B01J 23/44 (2013.01); B01J 23/46 (2013.01); B01J 23/52 (2013.01); B01J 23/58 (2013.01); B01J 23/60 (2013.01); B01J 23/66 (2013.01); B01J 23/682 (2013.01); B01J 23/685 (2013.01); B01J 23/686 (2013.01); B01J 23/688 (2013.01); B01J 23/74 (2013.01); B01J 23/78 (2013.01); B01J 23/80 (2013.01); B01J 23/89 (2013.01); B01J 23/892 (2013.01); B01J 23/8906 (2013.01); B01J 23/8913 (2013.01); B01J 23/8946 (2013.01); B01J 23/8953 (2013.01); B01J 35/006 (2013.01); B01J 35/0013 (2013.01); B01J 35/023 (2013.01); B01J 37/0072 (2013.01); B01J 37/0211 (2013.01); B01J 37/16 (2013.01); C07C 51/44 (2013.01); C07C 51/50 (2013.01); C07C 57/04 (2013.01); B01J 35/08 (2013.01); B01J 37/009 (2013.01); B01J 2523/00 (2013.01);
Abstract

A method for preparing acrylic acid, more specifically, to a method for preparing acrylic acid under a neutral condition at high yield in a short time without using a base, unlike the prior art in which a base is essentially used. The acrylic acid is produced using a supported catalyst having a specific composition when preparing acrylic acid by oxidation of allyl alcohol. Particularly, the preparation method can recover acrylic acid rather than acrylic acid salt as a final product, and thus has an advantage that the overall process cost can be reduced by eliminating essential processes in the prior art, such as ion exchange after the acidification process required for the conversion of acrylic acid salt to acrylic acid.

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