A process 4, wherein the amount of the metal element selected in the Periodic Table used in the contact treatment is in {HEAD ~ the range} of from {TAIL ~ 0.001 to 0.5 part} by weight per part of platinum or palladium 
of from
A process 4 , wherein the amount of the metal element selected in the Periodic Table used in the contact treatment is in { HEAD ~ the range } of from { TAIL ~ 0.001 to 0.5 part } by weight per part of platinum or palladium
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 TAIL OTH OTH OTH OTH OTH OTH OTH OTH