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    THERMOPLASTIC POLYESTER RESIN COMPOSITION AND MOLDED ARTICLE
    6.
    发明公开
    THERMOPLASTIC POLYESTER RESIN COMPOSITION AND MOLDED ARTICLE 审中-公开

    公开(公告)号：EP3854849A1

    公开(公告)日：2021-07-28

    申请号：EP19863023.8

    申请日：2019-09-13

    申请人： Toray Industries, Inc.

    发明人： MIYAMOTO, Kohei ,  TOJO, Yusuke ,  YOKOE, Makito ,  SHIROTANI, Kosuke ,  MAEDA, Yasuo

    IPC分类号： C08L67/00 ,  C08K3/013 ,  C08K3/38 ,  C08K5/17 ,  C08K5/3445 ,  C08K5/51 ,  C08K7/14 ,  C08L23/00 ,  C08L23/08 ,  C08L63/00 ,  C08L67/02

    摘要： Provided is a thermoplastic polyester resin composition comprising 100 parts by weight of (A) a non-liquid crystal thermoplastic polyester resin, 45 to 150 parts by weight of (B) a thermoplastic resin that is different from the non-liquid crystal thermoplastic polyester resin and has a dielectric loss tangent of not more than 0.005 when measured at a frequency of 5.8 GHz by the cavity resonance perturbation method, 2 to 20 parts by weight of (C) a compatibilizer having at least one reactive functional group selected from epoxy, acid anhydride, oxazoline, isocyanate, and carbodiimide groups, and 0.2 to 5 parts by weight of (D) at least one compound selected from tertiary amines, amidine compounds, organic phosphines and salts thereof, imidazoles, and boron compounds, wherein the ratio of the sum of the thermoplastic resin (B) and the compatibilizer (C) is in the range of 50 to 150 parts by weight and the weight ratio (B)/(C) of the thermoplastic resin (B) to the compatibilizer (C) is in the range of 8 to 50. The thermoplastic polyester resin composition can be molded into an article with low dielectric properties, excellent mechanical properties, and high bondability to metals.

    LIQUID-CRYSTALLINE POLYESTER AND PROCESS FOR PREPARING SAME
    8.
    发明公开
    LIQUID-CRYSTALLINE POLYESTER AND PROCESS FOR PREPARING SAME 审中-公开
    液晶聚酯核事件分级表及其制造方法

    公开(公告)号：EP2660265A1

    公开(公告)日：2013-11-06

    申请号：EP11853186.2

    申请日：2011-12-14

    申请人： Toray Industries, Inc.

    发明人： MIYAMOTO, Kohei ,  HAMAGUCHI, Mitsushige ,  UMETSU, Hideyuki

    IPC分类号： C08G63/60 ,  C08K3/00 ,  C08L67/04

    CPC分类号： C09K19/3809 ,  C08G63/19 ,  C08G63/605 ,  C08G63/78 ,  C08K7/14 ,  C08L67/03

    摘要： A liquid crystalline polyester having structural units (I), (II), (III), (IV) and (V) given below, wherein
    a ratio of the structural unit (I) to sum of the structural units (I), (II) and (III) is 68 to 80 mol%, a ratio of the structural unit (II) to sum of the structural units (II) and (III) is 55 to 75 mol%, and a ratio of the structural unit (IV) to sum of the structural units (IV) and (V) is 60 to 85 mol%, wherein
    a total amount of the structural units (II) and (III) is substantially equimolar with a total amount of the structural units (IV) and (V), and ΔS (entropy of melting) defined by Equation [1] given below is 1.0 to 3.0×10 -3 J/g·K:

    ΔS J / g ⋅ K = ΔHm J / g / Tm K
    (Tm herein means an endothermic peak temperature (Tm3) observed in differential scanning calorimetry of the liquid crystalline polyester, wherein after observation of an endothermic peak temperature (Tm1) in measurement with heating the liquid crystalline polyester at a rate of temperature of 20°C/ minute from room temperature, an endothermic peak temperature (Tm2) is observed when temperature is sequentially maintained at Tm1+20°C for 5 minutes, decreased to room temperature at a rate of 20°C/ minute, and increased again at a rate of 20°C/ minute, wherein after observation of the endothermic peak temperature (Tm2), the endothermic peak temperature (Tm3) is observed when temperature is sequentially maintained at Tm1+20°C for 5 minutes, decreased to room temperature at a rate of 20°C/ minute, and increased again at a rate of 20°C/ minute, and wherein ΔHm represents an endothermic peak area (ΔHm3) at the temperature Tm3.)