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    POLYESTER RESIN OR POLYESTER CARBONATE RESIN, AND OPTICAL MEMBER USING SAID RESIN
    1.
    发明申请
    POLYESTER RESIN OR POLYESTER CARBONATE RESIN, AND OPTICAL MEMBER USING SAID RESIN 有权

    公开(公告)号：US20210002420A1

    公开(公告)日：2021-01-07

    申请号：US16976840

    申请日：2019-03-11

    Applicant: TEIJIN LIMITED

    Inventor： Kyosuke YAMADA ,  Manabu MATSUI ,  Takatsune YANAGIDA ,  Kazuyoshi OGASAWARA ,  Kazunori NUNOME ,  Keisuke SATO ,  Tatsuya OYAMA

    IPC: C08G63/672 ,  G02B1/04

    Abstract: The purpose of the present invention is to provide a polyester resin or polyester carbonate resin, which has high refractive index, while achieving an excellent balance between heat resistance and low birefringence. A polyester resin or a polyester carbonate resin, which contains repeating units represented by the following formulae (1) and (2), and wherein the ratio of the repeating unit represented by formula (1) to the repeating unit represented by formula (2) is 15:85 to 85:15. (In formula (1), each of rings Z1 and Z2 represents a polycyclic aromatic hydrocarbon group having 9-20 carbon atoms; each of R1, R2, R7 and R8 independently represents a hydrocarbon group which may contain an aromatic group having 1-12 carbon atoms; each of R3-R6 and R9-R16 represents a hydrogen atom or an aliphatic or aromatic substituents; each of j, k, r and s independently represent an integer of 0 or more; and each of m, n, p and q independently represents 1 or 2) (In formula (2), each of R7, R8, R17 and R18 independently represent a hydrocarbon group which may contain an aromatic group having 1-12 carbon atoms; each of R9-R16 and R19-R26 represents a hydrogen atoms or an aliphatic or aromatic substituents; and each of r, s, t and u independently represents an integer of 0 or more.)

    THERMOPLASTIC RESIN AND OPTICAL MEMBER
    3.
    发明申请
    THERMOPLASTIC RESIN AND OPTICAL MEMBER 有权

    公开(公告)号：US20210147621A1

    公开(公告)日：2021-05-20

    申请号：US16638594

    申请日：2018-07-13

    Applicant: TEIJIN LIMITED

    Inventor： Kyosuke YAMADA ,  Manabu MATSUI ,  Takatsune YANAGIDA ,  Kazuyoshi OGASAWARA ,  Kazunori NUNOME ,  Keisuke SATO ,  Yasuhiko TOMONARI

    IPC: C08G64/06 ,  C08G63/64 ,  C08G63/672 ,  C08G64/30 ,  G02B1/04

    Abstract: The purpose of the present invention is to provide a thermoplastic resin that has a high refractive index and enables low birefringence and balanced heat resistance and moldability. This thermosetting resin includes repeating units represented by formula (1). (In the formula, the rings Z are the same or different and represent an aromatic hydrocarbon ring, R1 and R2 independently represent a C1-C12 hydrocarbon group optionally including a hydrogen atom, a halogen atom, and an aromatic group, Ar1 and Ar2 represent a C6-C10 aromatic group optionally having a substituent, L1 and L2 independently represent a divalent linking group, j and k independently represent an integer of 0 or more, m and n independently represent 0 or 1, and W is at least one selected from the groups represented by formulae (2) and (3).) (In the formula, X represents a divalent linking group.)

    POLYCARBONATE RESIN AND OPTICAL MEMBER CONTAINING SAME
    6.
    发明申请
    POLYCARBONATE RESIN AND OPTICAL MEMBER CONTAINING SAME 有权

    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}.

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