Patent ID: 6171521
Filing Date: 2001-01-09
Classification: C09K,C11D,C23F

Abstract:
A zwitterionic water-soluble imine of formula: ##STR15##whereinR.sub.1 is selected from heteroaryl, aryl, C.sub.5 -C.sub.6 cycloalkyl and C.sub.6 -C.sub.24 alkyl;R.sub.2 is selected from alkenyl, aminoalkyl, and hydroxyalkyl;R.sub.3 is selected from hydrogen and lower alkyl, or R.sub.1 and R.sub.3 taken together form a C.sub.5 -C.sub.6 cycloalkyl,p is 2, 3, 4 or 5; andZ is CO.sub.2.sup.-, OCO.sub.2.sup.-, SO.sub.3.sup.-, OSO.sub.3.sup.-, PO.sub.3.sup.- or OPO.sub.3.sup.-.