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    CRYSTAL OF 2,2'-BIS(CARBOXYMETHOXY)-1,1'-BINAPHTHYL
    1.
    发明公开
    CRYSTAL OF 2,2'-BIS(CARBOXYMETHOXY)-1,1'-BINAPHTHYL 审中-公开

    公开(公告)号：EP3805195A1

    公开(公告)日：2021-04-14

    申请号：EP19812018.0

    申请日：2019-05-28

    申请人： Honshu Chemical Industry Co., Ltd.

    发明人： SAKUMA Daichi ,  YAMANE Kentaro ,  MIZOGUCHI Shun ,  SUTO Takeru ,  KODERA Masato

    IPC分类号： C07C59/66 ,  C07C51/43

    摘要： The present invention addresses the problem of providing a novel crystal of 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl suitable as a resin raw material having excellent optical characteristics. As a solution, it was found that by carrying out crystallization using a particular solvent, a crystal of 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl is obtained that is represented by a chemical formula, that has an endothermic peak top temperature, as measured by differential scanning calorimetry, falling within a specific range, and that has an aerated bulk density falling within a specific range.

    Method for continuously producing 3,3',5,5'-tetra-t-butyl-4,4'-biphenol
    5.
    发明公开
    Method for continuously producing 3,3',5,5'-tetra-t-butyl-4,4'-biphenol 审中-公开
    Verfahren zur kontinuierlichen Herstellung von 3,3'，5,5'-四叔丁基-4,4'-联苯酚

    公开(公告)号：EP1415966A1

    公开(公告)日：2004-05-06

    申请号：EP03025103.7

    申请日：2003-10-31

    申请人： Honshu Chemical Industry Co., Ltd.

    发明人： Kawahara, Mikio

    IPC分类号： C07C37/11 ,  C07C39/15

    CPC分类号： C07C37/11 ,  C07C39/15

    摘要： A method for continuously producing 3,3',5,5'-tetra-t-butyl-4,4'-biphenol by oxidizing/dimerizing 2,6-di-t-butylphenol, comprising the steps of: supplying 2,6-di-t-butylphenol to a first reaction section of a reaction apparatus in which at least the first reaction section and a second reaction section are connected in series; supplying alkali catalyst to at least said first reaction section; and distributing oxygen-containing gas to each reaction section, respectively; whereby a reaction mixture containing 3,3',5,5'-tetra-t-butyl-4,4'-biphenol is obtained from a last reaction section.

    摘要翻译： 通过向反应的第一反应段（1）中提供2,6-二叔丁基苯，连续制备3,3'，5,5'-四叔丁基-4,4'-联苯（TBBP） 装置，向第一反应段供应碱催化剂，并向每个反应段分配含氧气体。 连续生产TBBP包括氧化/二聚2,6-二叔丁基苯酚包括向反应装置的第一反应段供应2,6-二叔丁基苯酚，其中至少第一反应段和第二反应段（ 2）串联连接; 向第一反应段供应碱催化剂; 并分别向每个反应段分配含氧气体，其中得到含有TBBP的反应混合物。

    COMPOSITION FOR RESIN STARTING MATERIAL
    10.
    发明公开
    COMPOSITION FOR RESIN STARTING MATERIAL 审中-公开

    公开(公告)号：EP4067334A1

    公开(公告)日：2022-10-05

    申请号：EP20893715.1

    申请日：2020-11-26

    申请人： Honshu Chemical Industry Co., Ltd.

    发明人： KODERA, Masato

    IPC分类号： C07C59/66 ,  C07C69/736

    摘要： An object is to improve resin physical properties such as heat resistance (glass transition temperature) of a resin such as polyester obtained from 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl. As a solution, a composition for a resin raw material characterized by containing a compound represented by formula (1) above as a component A and a compound represented by formula (2) above as a component B; and having its composition ratio in a range below, is provided.
    [Composition ratio]: The component A is present in an amount of 98.0 area% or more and 99.99 area% or less, and the component B is present in an amount of 1.50 area% or less, relative to the total amount of all components detected at a wavelength of 280 nm by high-performance liquid chromatography analysis using a UV detector.