wherein r is a monovalent organic radical containing from about 6 to about 30 preferably from about 8 to about 18 carbon atoms r 2 is a divalent hydrocarbon radical containing from about 2 to about 4 carbon atoms o is an oxygen atom y is a number which has an average value from about 0 to about 1 and is preferably 0 g is a moiety derived from a reducing saccharide containing 5 or 6 carbon atoms and x is a number having an average value from about 1 to 5 preferably from 1 1 to 2 z is o 2 m 1 o 2 cr 3 o ch 2 p co 2 m 1 oso 3 m 1 or o ch 2 p so 3 m 1 r 3 is ch 2 p co 2 m 1 or ch u2550 chco 2 m 1 with the proviso that z can be o 2 m 1 only if z is in place of a primary hydroxyl group in which the primary hydroxyl bearing carbon atom u2014 ch 2 oh is oxidized to form a u2014 co 2 m 1 group b is a number from 0 to 3x 1 preferably an average of from 0 5 to 2 per glucosal group p is 1 to 10 m 1 is h or.