R5 is hydroxyl, an alkyl group containing one or more hydroxyl groups, or (CH2(CR9R10)yO)x)???R11 wherein y is 1 to 5, preferably 1 to 3, x is an integer of 1 to 100, preferably 2 to 90 and more preferably 10 to 25; R9-R11 are independently selected from H, alkyl having up to 10 carbon atoms and alkyls having up to 10 carbon atoms substituted with at least one polar functional group;