| abstract |
Novel crosslinked polymeric ammonium salts are described, wherein in the polymeric salt: about 25% or more of the segments that bind to the ammonium nitrogen atoms are group Y, where Y is an n-alkylene group or the alkyl-substituted n-alkylene group, wherein the n-alkylene group has about 7 to 20 carbon atoms; zero to about 75% of the segments that bind to ammonium nitrogen atoms are group Z, where Z is a hydrocarbylene radical containing 2 or more carbon atoms, the hydrocarbylene radical optionally contains one or more hydroxyl groups, ether, amino, thioether, keto or silyl, or heterocyclic rings; and about 25% or more of the ammonium atoms are secondary ammonium atoms. |