d) charging an initial charge amount of said acrylic acid to a vessel, with said initial charge amount being a portion of {HEAD ~ an entire amount} of raw acrylic acid to be supplied to said batch reaction, with said portion of raw acrylic acid and a residual amount of {TAIL ~ raw acryiic acid} being equal to said entire amount of raw acrylic acid to be supplied to the batch reaction; then 
d ) charging an initial charge amount of said acrylic acid to a vessel , with said initial charge amount being a portion of { HEAD ~ an entire amount } of raw acrylic acid to be supplied to said batch reaction , with said portion of raw acrylic acid and a residual amount of { TAIL ~ raw acryiic acid } being equal to said entire amount of raw acrylic acid to be supplied to the batch reaction ; then
OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL 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