公开(公告)号：US20230046996A1

公开(公告)日：2023-02-16

申请号：US17782606

申请日：2020-12-07

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Minoru YABUKAMI ,  Shinobu YAMAO ,  Takafumi AKIMOTO ,  Masami SAWAI

IPC: C08G77/42 ,  C08K3/04 ,  C08K7/06 ,  C08K7/14

Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer, including: a polyorganosiloxane block (A-1) including a specific structural unit; and a polycarbonate block (A-2) formed of a specific repeating unit, wherein the polycarbonate-polyorganosiloxane copolymer satisfies the following condition (A) or (B): condition (A): a hexane extraction amount of the polycarbonate-polyorganosiloxane copolymer is 150 ppm or less; and condition (B): average weights of polyorganosiloxane blocks in polycarbonate-polyorganosiloxane copolymers obtained by separating the polycarbonate-polyorganosiloxane copolymer with a gel permeation chromatograph satisfy a specific expression.