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:
Dec. 03, 2019
Filed:
Sep. 14, 2018
Japan Atomic Energy Agency, Ibaraki, JP;
Kojiro Shimojo, Ibaraki, JP;
Hirochika Naganawa, Ibaraki, JP;
JAPAN ATOMIC ENERGY AGENCY, Ibaraki, JP;
Abstract
In synthesis of a compound represented by the General Formula (1) or a salt thereof, nitrilotriacetic acid as its raw material is reacted with a dehydrating agent to allow dehydration, and the resulting nitrilotriacetic acid anhydride is reacted with a dialkylamine to obtain a reaction intermediate product. The reaction intermediate product is then similarly reacted with a dehydrating agent to allow dehydration, and the resulting reaction intermediate anhydride is reacted with a dialkylamine to synthesize a tetraalkylnitriloacetic acid diacetamide compound. In Formula (1), R, R, Rand Rindependently represent the same or different hydrocarbon group, with the proviso that the total number of carbon atoms in the hydrocarbon groups R, R, R, and Ris 8 to 64.