| http://www.w3.org/ns/prov#value | - preferably having 1-12 carbon atoms, substituted or unsubstituted alkylsilyl derivatives; and R??? is a linking group such as alkylene, cycloalkylene or phenylene; wherein n is integer???1; and the polyol moiety is formed from polyethylene glycol, polypropylene glycol, poly tetramethylene glycol, polyester diol, polyalkylene diol or a fluorinated polyether diol; wherein n is an integer???1; and th
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