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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 9573869 B1

PDFFull Text
Date of Patent:
Feb. 21, 2017

Filed:

Jul. 11, 2014

Bisphenol a preparation apparatus and preparation method

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Jong Suh Park, Daejeon, KR;

Joon Ho Shin, Daejeon, KR;

Tae Woo Kim, Daejeon, KR;

Jong Ku Lee, Daejeon, KR;

Se Ho Park, Daejeon, KR;

Assignee:

LG CHEM, LTD., Seoul, KR;

Attorney:

Dentons US LLP

Primary Examiner:

Sikarl Witherspoon

Int. Cl.
CPC ...
C07C 37/20 (2006.01); B01J 19/00 (2006.01); C07B 63/00 (2006.01); C07C 37/68 (2006.01); B01J 19/24 (2006.01); C07C 37/76 (2006.01); C07C 37/82 (2006.01); C07C 37/84 (2006.01); C07C 37/74 (2006.01);
U.S. Cl.
CPC ...
C07C 37/685 (2013.01); B01J 19/24 (2013.01); C07B 63/00 (2013.01); C07C 37/20 (2013.01); C07C 37/74 (2013.01); C07C 37/76 (2013.01); C07C 37/82 (2013.01); C07C 37/84 (2013.01); B01J 2219/00103 (2013.01); B01J 2219/24 (2013.01);
Abstract

Provided are an apparatus and a method for preparing bisphenol A. In the present invention, all or some of a mother liquid stream is circulated to a flash rector through a bypass line after crystallization in a process of preparing bisphenol A so as to increase a conversion rate of bisphenol A in a reactor, reduce energy, and use a heating source of phenol to be discharged to an upper side of the flash reactor, and thus the reaction efficiency of the whole process can be increased.

Find Patent Forward Citations

Park, Jong. (2017). Bisphenol a preparation apparatus and preparation method (U.S. Patent No. 9573869). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9573869

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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