{HEAD ~ A multireactive polymerizable mesogenic compound} 1, wherein {TAIL ~ R2} is a group of one of the following formulae 
wherein
{ HEAD ~ A multireactive polymerizable mesogenic compound } 1 , wherein { TAIL ~ R2 } is a group of one of the following formulae
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH