| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a high molecular weight chain-extended condensation polymer using a short polymerization time.SOLUTION: The method for producing a chain-extended condensation polymer is provided that comprises adding a chain extender during a polymerization process of a condensation polymer to provide the chain-extended condensation polymer, wherein the chain extender comprises a polymerization product of at least one functional (meth)acryl monomer, and at least one styrene monomer, substituted styrene monomer, (meth)acryl monomer or a mixture of two or more of them, and the chain extender is added in amount of 0.1 to 0.32 wt.% based on total weight of the chain extender and a component of the condensation polymer and the condensation polymer is poly(ethylene terephthalate).SELECTED DRAWING: Figure 1 |
