{HEAD ~ Useful catalytic inks} have low viscosity, {TAIL ~ e.g. about 20 600 centipoises} , preferably 50 500 cp 
have
{ HEAD ~ Useful catalytic inks } have low viscosity , { TAIL ~ e.g. about 20 600 centipoises } , preferably 50 500 cp
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH