LU, JIE,OBERMEIER, BORIS,ARNOLD-STANTON, REGINA,JONES, ADOLPHUS G.
申请号：
CA3073842
公开号：
CA3073842A1
申请日:
2018.08.31
申请国别(地区):
CA
年份:
2019
代理人:
摘要：
The present invention is directed to an improved purification process using additive and activated carbon for purifying resorbable polymers suitable for industrial manufacturing. The metal catalyst concentration in the purified resorbable polymers of this invention is preferably less than 1 ppm. The method can be used to obtain high molecular weight polymers that are substantially metal free.
