Patent ID: 6232419
Filing Date: 2001-05-15
Classification: C02F,D21C

Abstract:
Polymers comprising:(A) 1,2-dihydroxy-3-butene monomer units and(B) at least one monomer unit is selected from the groups consisting of maleic acid, acrylic acid, acrylamide, methacrylic acid, itaconic acid, vinyl sulfonic acid, styrene sulfonic acid, N-tertbutylacrylamide, butoxymethylacrylamide, N,N-dimethylacrylamide, sodium acrylamidomethyl propane sulfonic acid, and salts thereof, with the proviso that said polymers do not contain the monomer unit --(CH.sub.2 --CH.dbd.CH--CH.sub.2 --O)--.