Modified poly ethylene phosphine acids and salts thereof

摘要

The present invention relates to polymers phosphinic acids and their salts of the general formula (i), in theX is hydrogen or a 1 / m metal of the value m is, or a protonated nitrogen base means,R₁, R₂ the same or different and are hydrogen, for a carboxyl group, for a carboxylic acid derivative, for a - optionally substituted - alkyl group having 1 to 10 c - atoms, phenyl, benzyl or for alkyl-substituted aromatic compounds are,R₃, R₄ can be identical or different and for a - optionally substituted - alkyl group having 2 to 20 c - atoms or for ox with the meaning given above for x and the average number of monomer units means.The present invention also relates to a process for the preparation of the abovementioned compounds and their use.