A polymer selected from a group of polymers shown to be effective in such an environment is added to {HEAD ~ the product mixture} which greatly improves {TAIL ~ the rate} of separation between the methyl ester and the glycerin and reduces the number of required steps to accomplish the separation 
greatly improves
A polymer selected from a group of polymers shown to be effective in such an environment is added to { HEAD ~ the product mixture } which greatly improves { TAIL ~ the rate } of separation between the methyl ester and the glycerin and reduces the number of required steps to accomplish the separation
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 HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH