公开(公告)号：US10808110B2

公开(公告)日：2020-10-20

申请号：US16308925

申请日：2017-06-28

Applicant: KURARAY CO., LTD.

Inventor： Eriko Kometani ,  Makoto Okamoto ,  Mitsunori Asada ,  Yaqi Li

IPC: C08L23/08 ,  C08K5/20 ,  C08L29/04

Abstract: A resin composition superior in stability and external appearance characteristics during/following melt molding; and an extrusion-molded article, an injection-molded article and a blow-molded article that are formed from the resin composition are provided. The resin composition contains an ethylene-vinyl alcohol copolymer as a principle component, and has a heterogeneous nucleation index (f) of less than 0.6 as determined by formula (1) based on a differential scanning calorimetry (DSC) curve obtained by DSC in which the resin composition is cooled at a rate of 150° C./sec from a molten state at 210° C. In the formula (1), Qtotal represents an area of a total region surrounded by the DSC curve and a base line, and Qhetero represents an area of a heterogeneous region that is a part of the total region, falling within a range from the temperature lower than the melting point by 38° C. to a temperature lower than the melting point by 75° C. f=Qhetero/Qtotal  (1)