公开(公告)号：US20210040263A1

公开(公告)日：2021-02-11

申请号：US17043118

申请日：2019-03-20

Applicant: TEIJIN LIMITED

Inventor： Tatsuya OYAMA ,  Kazuyoshi OGASAWARA ,  Atsushi UMEKI ,  Keisuke SATO ,  Manabu MATSUI

IPC: C08G64/16 ,  G02B1/04

Abstract: The purpose of the present invention is to provide a high temperature/humidity resistant polycarbonate resin without using bisphenol A as a raw material. The present invention relates to a polycarbonate resin comprising the repeating units of formulas (1), (2) and (3), wherein the content of the repeating unit of formula (3) is 5 mol % to 50 mol %, and the refractive index is 1.570 to 1.600. {In formula (1), R1 and R2 each represent a hydrogen atom or a C1-10 hydrocarbon group.} {In formula (3), n ranges from 0 to 8, and the R symbols are each selected from C1-3 alkyl groups}.

公开(公告)号：US20240010834A1

公开(公告)日：2024-01-11

申请号：US18032744

申请日：2021-10-13

Applicant: TEIJIN LIMITED

Inventor： Atsushi UMEKI ,  Ryouta MANO ,  Takatsune YANAGIDA ,  Yasuhiko TOMONARI ,  Keisuke SATO

IPC: C08L69/00

CPC classification number: C08L69/005 ,  C08L2205/02

Abstract: A thermoplastic resin composition comprising a thermoplastic resin (A) containing a unit represented by formula (1) and a thermoplastic resin (B) containing a unit represented by formula (2), wherein in the formula (1), L1 and L2 each independently represent a divalent linking group, k and 1 each independently represent an integer of 0 or more, R1, R2, R3, and R4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and W represents a divalent linking group; and in the formula (2), L3 and L4 each independently represent a divalent linking group, m and n each independently represent an integer of 0 or more, and R5, R6, R7, and R8 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.