The second layer is applied to at least a portion of {HEAD ~ the first layer} and contains {TAIL ~ a second polymer} 
The second layer is applied to at least a portion of { HEAD ~ the first layer } and contains { TAIL ~ a second polymer }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL