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