N-(Sulfoalkane) amino alkane phosphonic acids and their water-soluble salts

US4250107A · kind A · utility

Assignee

• Benckiser-Knapsack GmbH · DE

Inventors

• Klaus Sommer · Heidelberg, DE
• Gottfried Schoebel · Ludwigshafen, DE

Key dates

• Filing date: Nov 6, 1978
• Grant date: Feb 10, 1981
• Expiry date: Nov 6, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/3808
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

N-(sulfo alkane) amino alkane phosphonic acids or their water-soluble salts are obtained by reacting an alkali metal salt of an amino alkane phosphonic acid with at least one hydrogen atom in the amino group which can be replaced by a sulfo alkane group, in an alkaline medium with an alkane sultone while heating.