{TAIL ~ All parts}, {HEAD ~ percentages} and ratios used herein are expressed by weight unless otherwise specified 
{ TAIL ~ All parts } , { HEAD ~ percentages } and ratios used herein are expressed by weight unless otherwise specified
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH