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:
Oct. 09, 2018
Filed:
Nov. 07, 2017
Applicant:
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Inventors:
Hyung Jae Lee, Seoul, KR;
Ji Hyun Heo, Seoul, KR;
Assignee:
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/68 (2006.01); C08F 4/629 (2006.01);
U.S. Cl.
CPC ...
C08F 4/68 (2013.01); C08F 4/6297 (2013.01);
Abstract
Disclosed is a method of preparing a rare-earth alkyl phosphate solution, the method including step (a) of preparing an alkyl phosphate amine salt solution by reacting an organic amine with an alkyl phosphate in a first solvent; step (b) of preparing a rare-earth metal salt solution by reacting a rare-earth metal oxide with an acid in the second solvent; and step (c) of mixing and reacting the alkyl phosphate amine salt solution with the rare-earth metal salt solution.