A compound of formula or its enantiomers or diastereoisomers thereof: wherein: A,; X, W, R1, Y; R3; and R4 are as defined herein. The disclosed processes include both in-situ polymerizations in the presence of at least partially exfoliated unmodified clays as well as admixtures of polymer dispersions with at least partially exfoliated unmodified clay dispersions. The identifier is then shared with at least one processing layer along a path of the storage traffic stream between the generating entity and the storage device which stores the file to which the traffic stream relates. The system may use this information to direct the mobile device user to a dynamically created web page. The system includes means for determining bright corrected pixel values for dark portions of an image corresponding to a first subframe and means for determining dark corrected pixel values for dark image portions of an image corresponding to a second sub frame of the image frame.