公开(公告)号：US12240955B2

公开(公告)日：2025-03-04

申请号：US17627356

申请日：2020-07-10

Applicant: KANEKA CORPORATION

Inventor： Asuka Fukutome ,  Tetsuo Okura ,  Shunsuke Sato

IPC: C08G63/06 ,  B29B11/10 ,  B29C71/02 ,  B29K96/00

Abstract: A method for producing a poly(3-hydroxybutyrate) resin-containing composition for melt processing includes: heating a material containing a poly(3-hydroxybutyrate) resin to a temperature equal to or higher than a melting point peak temperature in differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin and equal to or lower than a melting point peak end temperature in the differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin, wherein the difference between the melting point peak temperature and the melting point peak end temperature of the poly(3-hydroxybutyrate) resin is 10° C. or more; and extruding the heated material to obtain a composition for melt processing that has a new crystallization peak at a temperature higher than the melting point peak temperature.