| 摘要 |
Alkenylaminomethylenephosphonic acids of the formula <IMAGE> (I) in which R1 is hydrogen, C4-C10-alkyl, phenyl, naphthyl, methylphenyl, hydroxyphenyl, methoxyphenyl, methylnaphthyl, hydroxynaphthyl or methoxynaphthyl, R2 is hydrogen, R3, R4, R5 are hydrogen or methyl, R5 is hydrogen, C1-C4-alkyl or phenyl, and 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 R2 is hydrogen or a group of the formula-CH2PO3M2, and 99.9-0.1% by weight, preferably 99-50% by weight, of one or more monomers of the formula II R1'R2'C=CR3'X (II) in which R1' is hydrogen or a group of the formula -COOM, R2' is hydrogen, phenyl or a group of the formula -COOM, R3' is hydrogen, methyl or a group of the formula -COOM or -CH2COOM, X is a group of the formula -COOM or R2' and R3' together are a C4-alkylene or R1' X together are a group of the formula <IMAGE> or R3' and X together are a group of the formula <IMAGE> These copolymers are suitable as complexing agents, in particular detergents as builder and co-builder, peroxide stabilizers and as granulating aids for bleaching activators and in crude oil recovery as scale inhibitors having anti-corrosive action.
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