Patent · US Active

Process for the manufacture of alkylamino alkylene phosphonic acids

US8802891B2 · kind B2 · utility

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3References

8Claims

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Assignee

ITALMATCH CHEMICALS S.P.A. · IT

Inventors

Patrick Notte · Wavre, BE
Jan H. J. Van Bree · Ottenburg, BE
Albert Devaux · Mont-Saint-Guibert, BE

Key dates

Filing date	Dec 11, 2007
Grant date	Aug 12, 2014
Priority date	—
Expiry date	Sep 12, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2103/10
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A process for the manufacture of alkylamino alkylene phosphonic acids is disclosed. In detail, a specific phosphonate is reacted with an agent selected to yield an alkylamino moiety substituted by a radical selected from OH, OR′, NH2, NHR′, N(R′)2, NH, N, S, S—S and SH in aqueous alkaline medium having a pH of 8 or higher at a temperature of 0° C. or higher.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.