Process for continuous production of polyesters

Process for continuous production of polyesters

  • CN 105,646,863 A
  • Filed: 07/29/2009
  • Published: 06/08/2016
  • Est. Priority Date: 07/31/2008
  • Status: Active Application
First Claim
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1. , at the temperature of 100-240 DEG C, ring-opening polymerisation cyclic ester monomers forms the continuation method of aliphatic polyester, and the method comprises the steps:

  • A) provide cyclic ester monomers and polymerization catalyst continuously in continuous mixing reactor, the operation when being effectively polymerized formation prepolymerization reaction mixture of this reactor,B) from continuous print mixing reactor, it is continuously withdrawn the reactant mixture of pre-polymerization, and provide the reactant mixture of pre-polymerization continuously in plug flow reactor, wherein operate plug flow reactor under polymerization conditions, wherein this reactant mixture is aggregated to the extent of polymerization of at least 90%, form polymerC) from plug flow reactor, polymer it is continuously withdrawn.

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