会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 71. 发明授权
    • Process for production of highly polymerized aromatic polycarbonate resin
    • 生产高聚合芳族聚碳酸酯树脂的方法
    • US08674053B2
    • 2014-03-18
    • US13510780
    • 2010-11-18
    • Yoshinori IsahayaShu YoshidaNoriyuki KatoHiroki Furuhashi
    • Yoshinori IsahayaShu YoshidaNoriyuki KatoHiroki Furuhashi
    • C08G64/00C08G63/02
    • C08G64/42C08G64/305
    • A method for highly polymerizing an aromatic polycarbonate resin, which enables the increase in molecular weight of the aromatic polycarbonate resin satisfactorily while keeping good quality of the resin. An aromatic polycarbonate is linked to an aliphatic diol compound having a boiling point of 240° C. or higher (preferably in an amount of 0.01 to 1.0 mole per mole of the total amount of the terminal of the aromatic polycarbonate) through a transesterification reaction in the presence of a transesterification catalyst under reduced pressure conditions (preferably at a reduced pressure ranging from 13 kPaA (100 torr) to 0.01 kPaA (0.01 torr)), thereby increasing the molecular weight of the resulting molecule. The weight average molecular weight (Mw) of the aromatic polycarbonate after the transesterification reaction can be increased preferably by 5,000 or more compared to that of the aromatic polycarbonate before the transesterification reaction.
    • 芳香族聚碳酸酯树脂的高度聚合的方法,能够令树脂的良好品质保持良好,能够令芳香族聚碳酸酯树脂的分子量提高。 通过酯交换反应将芳族聚碳酸酯与沸点为240℃以上的脂肪族二醇化合物(优选为每摩尔芳族聚碳酸酯的末端的总量为0.01〜1.0摩尔)连接, 在减压条件下(优选在13kPaA(100乇)至0.01kPa(0.01乇))的减压条件下存在酯交换催化剂,从而提高所得分子的分子量。 与酯交换反应前的芳香族聚碳酸酯相比,酯交换反应后的芳香族聚碳酸酯的重均分子量(Mw)优选提高5000以上。
    • 76. 发明授权
    • Thermoplastic resin with high thermal conductivity
    • 热塑性树脂具有高导热性
    • US08637630B2
    • 2014-01-28
    • US13641939
    • 2011-04-14
    • Shusuke YoshiharaToshiaki EzakiKazuaki Matsumoto
    • Shusuke YoshiharaToshiaki EzakiKazuaki Matsumoto
    • C08G64/00C08G63/02
    • C08G63/20C08G63/193
    • Provided is a thermoplastic resin having excellent thermal conductivity, in which thermoplastic resin a change in number average molecular mass caused by progress of polymerization occurring when the thermoplastic resin material is melted and a change in thermal conductivity caused by the change in number average molecular mass are low. The thermoplastic resin has (A) a specific structure and (B) ends of molecular chains sealed by a monofunctional low molecular weight compound. The resin itself has excellent thermal conductivity. The change in number average molecular mass becomes small during melting of the thermoplastic resin material, so that the change in thermal conductivity of the resin itself becomes small.
    • 本发明提供一种导热性优异的热塑性树脂,其中热塑性树脂在热塑性树脂材料熔融时发生的聚合过程引起的数均分子量的变化和由数均分子量的变化导致的导热率的变化是 低。 热塑性树脂具有(A)特定结构,(B)由单官能低分子量化合物密封的分子链末端。 树脂本身具有优良的导热性。 在热塑性树脂材料的熔融期间,数均分子量的变化变小,因此树脂本身的热导率的变化变小。