More preferably the catalyst comprises 0.125% to 0.25% by {TAIL ~ volume} of {HEAD ~ the catalyst solution} 
More preferably the catalyst comprises 0.125 % to 0.25 % by { TAIL ~ volume } of { HEAD ~ the catalyst solution }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD