Depolymerization method for polymer containing ester bond in main chain and method for producing polymer containing ester bond in main chain from depolymerization product
AssigneeKeio University
InventorShuichi Matsumura
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Abstract
The invention provides a depolymerization method for a polymer containing an ester bond in a main chain, by causing a solid acid catalyst to act on a polymer containing an ester bond in a main chain to depolymerize the polymer, thereby obtaining a re-polymerizable monomer and/or oligomer as a depolymerization product, and a method for producing a polymer containing an ester bond in a main chain, by polymerizing the re-polymerizable monomer and/or oligomer obtained by the depolymerization method.
Claims18
A depolymerization method for a polymer containing an ester bond in a main chain, the method comprising:
- causing a solid acid catalyst to act on a polymer containing an ester bond in a main chain to depolymerize the polymer without the use of an alkali, thereby obtaining a re-polymerizable monomer and/or oligomer as a depolymerization product,
- wherein
- an amount of the solid acid catalyst is from 300 to 1,000 mass % with respect to a mass of the polymer,
- the solid acid catalyst is selected from the group consisting of sulfated zirconia (VI),vermiculites and heteropolyacids, and
- the solid acid catalyst is insoluble.
A depolymerization method for a polymer containing an ester bond in a main chain, the method comprising:
- causing a solid acid catalyst to act on a polymer containing an ester bond in a main chain to depolymerize the polymer without the use of an alkali, thereby obtaining a re-polymerizable monomer and/or oligomer as a depolymerization product,
- wherein
- an amount of the solid acid catalyst is from 300 to 1,000 mass % with respect to a mass of the polymer,
- the solid acid catalyst is insoluble, and
- the solid acid catalyst is montmorillonite.
Dependencies are inferred from the claim text.