Patent ID: 9371445
Filing Date: 2016-06-21
CPC Classification: C08J,C08K,C08L

Claim Text:
1. A film or a sheet, which is obtained by molding a biodegradable polyester resin composition by a blown film method or a T-die extrusion method, wherein the biodegradable polyester resin composition comprises: polybutylene adipate terephthalate (PBAT) in a proportion of 60 to 400 parts by weight based on 100 parts by weight of aliphatic polyester (P3HA) having a repeating unit represented by wherein R is an alkyl group represented by C n H 2n+1 and n is an integer of 1 or more and 15 or lower; and acetylated monoglyceride in a proportion of 10 to 50 parts by weight based on 100 parts by weight of the aliphatic polyester (P3HA) having a repeating unit represented by the Formula (1); and wherein a maximum major axis of phases containing the aliphatic polyester (P3HA) measured by a transmission electron microscopy analysis-image analysis method (TEM method) is 18 μm or lower and an average value is 8 μm or lower, and wherein a ratio (P3HA/PBAT) of a melt viscosity of the aliphatic polyester (P3HA) to a melt viscosity of the polybutylene adipate terephthalate (PBAT) is 0.5 or more.