摘要 |
<p>A process for the continuous production of an &epsiv;-caprolactone polymer which comprises heating an &epsiv;-caprolactone polymer under vacuum or in an inert gas stream to volatilize the unreacted &epsiv;-caprolactone from the polymer and cooling the vapor phase containing the matter which has been volatilized to thereby recover the unreacted &epsiv;-caprolactone, characterized in that the amount of the &epsiv;-caprolactone to be recovered is regulated to larger than 5 times by weight the amount of caprolactone dimer.</p> |