The method 1, wherein acidic or basic auxiliary substances are added in {HEAD ~ a proportion} of from {TAIL ~ 0.01 mol %} to 5 mol % 
of from
The method 1 , wherein acidic or basic auxiliary substances are added in { HEAD ~ a proportion } of from { TAIL ~ 0.01 mol % } to 5 mol %
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH