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:
Sep. 03, 2024
Filed:
Jan. 22, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Sung Ho Lee, Daejeon, KR;
Sang Beom Lee, Daejeon, KR;
Joon Ho Shin, Daejeon, KR;
In Yong Jeong, Daejeon, KR;
Min Suk Kang, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 47/016 (2017.01); B01J 39/04 (2017.01); C07C 37/20 (2006.01); C07C 37/82 (2006.01); C07C 37/84 (2006.01); C07C 39/16 (2006.01);
U.S. Cl.
CPC ...
B01J 47/016 (2017.01); B01J 39/04 (2013.01); C07C 37/20 (2013.01); C07C 37/82 (2013.01); C07C 37/84 (2013.01); C07C 39/16 (2013.01);
Abstract
A method of washing an ion exchange resin, including washing an ion exchange resin with deionized water (DI water) one or more times to prepare a washed ion exchange resin; and storing the washed ion exchange resin in dionized water. A method for producing bisphenol A using the method of washing an ion exchange resin. The resulting bisphenol A has improved purity, thermal stability, color, and the like.