Process for continuously producing ε-caprolactone polymer

Details Process for continuously producing ε-caprolactone polymer Process for continuously producing ε-caprolactone polymer

2006-10-10

2006-10-10

Hightower, P. Hampton (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

C528S486000, C528S499000, C528S50200C, C528S354000, C528S359000, C528S310000

Reexamination Certificate

active

07119163

ABSTRACT:
A process for the continuous production of an ε-caprolactone polymer characterized by including heating an ε-caprolactone under reduced pressure or in an inert gas stream to volatilize the unreacted ε-caprolactone from the polymer and cooling the vapor phase part containing the matter volatilized to thereby recover the unreacted ε-caprolactone, wherein the amount of the ε-caprolactone to be recovered is regulated to larger than 5 times by weight the amount of caprolactone dimer.

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