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