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