Method for separating organozinc catalyst from polyalkylene carbonate polymerization solution
AssigneeLG Chem, Ltd.
InventorsKyung Min Min, Seung Young Park, Sung Kyoung Kim, Sang Cheol Shin, Won Seok Kim, Won Hee Woo
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Abstract
The present disclosure relates to a method for separating an organozinc catalyst from a polyalkylene carbonate polymerization solution, and the method of the present disclosure includes: stirring and aging a polymerization solution including a polyalkylene carbonate resin, an organozinc catalyst, an alkylene oxide and a polymerization solvent; and filtering the polymerization solution after completing the aging.
Claims11
A method for separating an organozinc catalyst from a polyalkylene carbonate polymerization solution, the method comprising:
- stirring and aging a polymerization solution comprising a polyalkylene carbonate resin, an organozinc catalyst, an alkylene oxide and a polymerization solvent;
- and
- filtering the polymerization solution after completing the aging.
A method for separating an organozinc catalyst from a polyalkylene carbonate polymerization solution, the method comprising:
- stirring and aging a polymerization solution comprising a polyalkylene carbonate resin, an organozinc catalyst, an alkylene oxide and a polymerization solvent until the polymerization solution is phase separated into an upper layer part comprising the polyalkylene carbonate resin and the solvent and a lower layer part comprising a polyalkylene glycol and the organozinc catalyst.
Dependencies are inferred from the claim text.