al Company), and wherein aryl has at least 6 carbon atoms, for example from 6 to about 24 carbon atoms, such as preferably phenyl, and wherein the number of carbon atoms is such that the material is water soluble, (6) hydroxy alkyl celluloses, wherein alkyl has at least one carbon atom and wherein the number of carbon atoms is such that the material is water soluble, preferably from 1 to about 20