a functional alkoxy silane as {HEAD ~ an adhesion promoter}, {TAIL ~ which functional alkoxy silane} has the formula: 
a functional alkoxy silane as { HEAD ~ an adhesion promoter } , { TAIL ~ which functional alkoxy silane } has the formula :
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH