| abstract |
The present invention relates to optical elements comprising fluorochemical surface treatments having the general structure Rf-[G] m (CH 2 ) n —X wherein Rf is a fluorinated alkyl group, G is a divalent linking group selected from oxygen (—O—) and sulfonamido (—SO 2 R—), m is an integer ranging from 0 to 1, n is an integer ranging from 1 to 24, and X is polar group or polar group containing radical. The invention further relates to materials such as retroreflective sheetings, pavement markings and beaded projection screens comprising a binder and the surface treated optical elements. |