Generally, the amount of hydrolysis and condensation desired is that amount which will result in {HEAD ~ a copolymer} having {TAIL ~ the desired viscosity} and the desired alkoxy content 
having
Generally , the amount of hydrolysis and condensation desired is that amount which will result in { HEAD ~ a copolymer } having { TAIL ~ the desired viscosity } and the desired alkoxy content
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH