Patent ID: 11898031
Assignee: ECOVANCE CO. LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 8:
9. The biodegradable polyester resin composition according to claim 1, wherein a biodegradability of the biodegradable polyester resin composition after one week is 45% to 65%,
a biodegradability of the biodegradable polyester resin composition after nine weeks is 85% or more,
wherein the biodegradability after one week and the biodegradability after nine weeks are measured by a measurement method below:
wherein in the measurement method
the biodegradability after one week is a molecular weight reduction rate, compared to an initial molecular weight of the biodegradable polyester resin composition, of the biodegradable polyester resin composition placed at 60° C. and a relative humidity of 90% for one week under composting conditions, and
the biodegradability after nine weeks is a molecular weight reduction rate, compared to an initial molecular weight of the biodegradable polyester resin composition, of the biodegradable polyester resin composition placed at 60° C. and a relative humidity of 90% for nine weeks under composting conditions.