Method of producing recycled alicyclic structure-containing polymer
AssigneeZeon Corporation
InventorYusuke YAMADA
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Abstract
Provided is a method of producing a recycled alicyclic structure-containing polymer in which a recycled alicyclic structure-containing polymer is obtained by efficiently and effectively removing a crystalline polymer from a shaped product containing the crystalline polymer and an alicyclic structure-containing polymer. The method of producing a recycled alicyclic structure-containing polymer is a method of producing a recycled alicyclic structure-containing polymer from a shaped product containing a crystalline polymer and an alicyclic structure-containing polymer that is amorphous and includes a specific dissolution step, a specific heating step, a specific cooling step, and a specific removal step.
Claims8
A method of producing a recycled alicyclic structure-containing polymer from a shaped product containing a crystalline polymer and an alicyclic structure-containing polymer that is amorphous, comprising:
- dissolving at least the alicyclic structure-containing polymer in a solvent through mixing of the shaped product with the solvent to obtain a polymer solution;
- heating the polymer solution to a temperature of not lower than Tc1—75° C. and not higher than Tc1° C., given that a crystallization temperature of the crystalline polymer is taken to be Tc1° C.;
- cooling the polymer solution after the heating to a temperature that is lower than a heating temperature in the heating and that is not higher than 40° C.;
- and
- removing the crystalline polymer from the polymer solution after the cooling.
Dependencies are inferred from the claim text.