| abstract |
Polymers are described comprising a) one or more of the recurring structural units of the formula (1) n nwhere R 1 is hydrogen, methyl or ethyl and A is C 1 -C 8 alkylene, and Q + is H + , NH 4 + , Li + , Na + , K + , ½ Ca ++ , ½ Mg ++ , ½ Zn ++ or ⅓ Al +++ , and the neutralization degree of the structural units of formula (1) is 50 to 100 mol-%, and b) one or more of the recurring structural units of the formula (2)n n nwhere R 1 and A are R 1 and A from formula (1) and X + is [HNR 5 R 6 R 7 ] + , where R 5 , R 6 and R 7 can independently from each other be hydrogen, a linear or branched alkyl group with 1 to 22 carbon atoms, a linear or branched, simple or polyunsaturated alkenylene group with 2 to 22 carbon atoms, a C 6 -C 22 -alkylamidopropyl group, a linear monohydroxyalkyl group with 2 to 10 carbon atoms or a linear or branched dihydroxyalkyl group with 3 to 10 carbon atoms, and wherein at least one of the groups R 5 , R 6 and R 7 is not hydrogen. |