Patent · US Active

Process for preparing aminopolycarboxylates

US8609894B2 · kind B2 · utility

0Cited by

4References

17Claims

0Family size

Assignee

BASF SE

Inventors

Robert Baumann · Mannheim, DE
Markus Christian Biel · Mannheim, DE
Axel Franzke · Goldkronach, DE
Alfred Oftring · Bad Dürkheim, DE
Friedhelm Teich · Karlsruhe, DE
Paul Klingelhoefer · Mannheim, DE
Marie Katrin Schroeter · Ludwigshafen am Rhein, DE

Key dates

Filing date	Apr 2, 2012
Grant date	Dec 17, 2013
Priority date	—
Expiry date	Apr 2, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C227/02
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing aminopolycarboxylates proceeding from the corresponding polyalkanolamines by oxidative dehydrogenation in the presence of a catalyst comprising 1 to 90% by weight of copper, based on the total weight of the catalyst, using a base, which comprises first performing a partial conversion of the polyalkanolamine to a reaction mixture comprising the aminopolycarboxylate at a temperature in the range from 140 to 180° C. until at least 10 to 90 mol% of the polyalkanolamine has been depleted, and then continuing the conversion at elevated temperature.

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