Alkenylaminomethylenephosphonic acids and copolymers thereof with unsaturated carboxylic acids

US5126418A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Christoph Porz · Bonn, DE
• Gerd Reinhardt · Kelkheim, DE
• Hermann Hoffmann · Echterdingen, DE

Key dates

• Filing date: Jan 17, 1991
• Grant date: Jun 30, 1992
• Expiry date: Jan 17, 2011

Classification

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

Abstract

Alkenylaminomethylenephosphonic acids of the formula ##STR1## in which R.sub.1 is hydrogen, C.sub.4 -C.sub.10 -alkyl, phenyl, naphthyl, methylphenyl, hydroxyphenyl, methoxyphenyl, methylnaphthyl, hydroxynaphthyl or methoxynaphthyl, PA1 R.sub.2 is hydrogen, PA1 R.sub.3, R.sub.4, R.sub.5 are hydrogen or methyl, PA1 R.sub.5 is hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl, and PA1 M is hydrogen or a cation, and copolymers comprising 0.1-99.9% by weight, preferably 1-50% by weight, of one or more monomers of the formula I, in which R.sub.2 is hydrogen or a group of the formula--CH.sub.2 PO.sub.3 M.sub.2, and 99.9-0.1% by weight, preferably 99-50% by weight, of one or more monomers of the formula II EQU R.sub.1 'R.sub.2 'C.dbd.CR.sub.3 'X (II) in which PA1 R.sub.1 ' is hydrogen or a group of the formula --COOM, PA1 R.sub.2 ' is hydrogen, phenyl or a group of the formula --COOM, PA1 R.sub.3 ' is hydrogen, methyl or a group of the formula --COOM or --CH.sub.2 COOM, PA1 X is a group of the formula --COOM or PA1 R.sub.2 ' and R.sub.3 ' together are a C.sub.4 -alkylene or PA1 R.sub.1 ' X together are a group of the formula ##STR2## or R.sub.3 ' and X together are a group of the formula ##STR3#…