公开(公告)号：US20230242756A1

公开(公告)日：2023-08-03

申请号：US18021310

申请日：2021-07-27

Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.

Inventor： Shotaro OHNO ,  Masahide TAKEDA ,  Mamoru NAKAJIMA ,  Keisuke TOMITA ,  Kentaro SUZUKI

IPC: C08L69/00 ,  C08L67/04 ,  C08K5/50 ,  C08K3/22

CPC classification number: C08L69/00 ,  C08K3/22 ,  C08K5/50 ,  C08L67/04 ,  C08K2003/2237 ,  C08K2201/017

Abstract: Provided are a resin composition which can provide a resin sheet having excellent light shielding properties with titanium oxide sufficiently dispersed, as well as a resin sheet, a multilayered article and a card produced therefrom. The resin composition includes a polycarbonate resin in an amount of 30 to 95 parts by mass, and titanium oxide in an amount of 5 to 40 parts by mass, wherein the titanium oxide has an average primary particle size of 0.22 to 0.26 µm based on measurement of an image observed by a scanning electron microscope (SEM), and wherein the titanium oxide has an Si content of 1.0 to 1.8 % by mass and an Al content of 1.6 to 2.2 % by mass based on measurement by X-ray fluorescence (XRF) analysis after firing at 700° C. for 2 hours.