i) providing a polymer asphalt master batch comprising {TAIL ~ at least one polymer} and {HEAD ~ a first asphalt} 
i ) providing a polymer asphalt master batch comprising { TAIL ~ at least one polymer } and { HEAD ~ a first asphalt }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD