Hydroxamic acids and hydroxamic acid ethers, and the use thereof as complexing agents

US5733342A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas Greindl · Bad Dürkheim, DE
• Alexander Kud · Eppelsheim, DE
• Volker Schwendemann · Neustadt, DE
• Michael Kneip · Ludwigshafen, DE
• Elisabeth Kappes · Schifferstadt, DE
• Richard Baur · Mutterstadt, DE
• Juergen Schneider · Freinsheim, DE
• Birgit Potthoff-Karl · Weinheim, DE
• Alfred Oftring · Bad Dürkheim, DE

Key dates

• Filing date: Oct 19, 1995
• Grant date: Mar 31, 1998
• Expiry date: Oct 19, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/394
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Hydroxamic acids and hydroxamic acid ethers I and II ##STR1## where Z.sup.1 and Z.sup.2 are --NH --OY, --NR.sup.1 --OY or --OX, where in the case of (I) at least one of Z.sup.1 or Z.sup.2, and in the case of (II) Z.sup.1 is --NH --OY or --NR.sup.1 --OY, and PA1 R.sup.1 is C.sub.1 -C.sub.18 -alkyl, PA1 X is hydrogen, alkali metal, ammonium or substituted ammonium, and PA1 Y is hydrogen, alkali metal, ammonium, substituted ammonium or C.sub.1 -C.sub.18 -alkyl, and PA1 L is a C.sub.1 -C.sub.100 linker which can also carry oxygen and nitrogen functional groups, with the exception of N,N-bis(carboxymethyl)-2-aminoacetohydroxamic acid.