| http://www.w3.org/ns/prov#value | - reaction was determined to be 6,200 by GPC. The temperature was maintained at 60??? C., 450 g. of 1,2-diethoxypropane were added, and then 90 kg of butadiene were added at such a rate as to allow the temperature to remain about 60??? C. A sample collected at the end of the butadiene polymerization had a styrene content of 22% wt and a vinyl content of 81% basis 1H NMR and an overall molecular weig
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