Phosphonomethylated polyvinylamines and preparation and use thereof
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United States of America Patent
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Jul 24, 2001
Grant Date -
N/A
app pub date -
Jul 12, 1993
filing date -
Aug 7, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Phosphonomethylated poly-vinylamines which contain as characteristic structural elements units of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.6 -alkyl or ##STR2## and X is hydrogen, an alkali metal, ammonium or one equivalent of an alkaline earth metal, are obtainable by phosphonomethylation of polymers which contain N-vinyl-amide or vinylamine groups and are useful as detergent additives and water treatment agents.
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