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
    • 5. 发明授权
    • Process for the preparation of aromatic polycarbonate
    • 芳香族聚碳酸酯的制备方法
    • US06265524B1
    • 2001-07-24
    • US09424318
    • 1999-11-22
    • Hidemi TakemotoToru SawakiKatsushi Sasaki
    • Hidemi TakemotoToru SawakiKatsushi Sasaki
    • C08G6400
    • C08G64/307C07C68/00C07C69/96
    • A process for producing an aromatic polycarbonate through an ester interchange reaction between an aromatic carbonic acid diester and an aromatic dihydroxy compound, wherein the aromatic carbonic acid diester is obtained through the decarbonylation reaction of an aromatic oxalic acid diester represented by the following general formula (1): wherein two Ar's are the same or different aromatic hydrocarbon groups having 6 to 14 carbon atoms, and has a hydrolyzable halogen content of 5 ppm or less. According to the present invention, an aromatic polycarbonate having a high molecular weight and excellent color can be easily produced without impairing ester interchange reactivity for the production of the aromatic polycarbonate by using an aromatic carbonic acid diester obtained through the decarbonylation of an aromatic oxalic acid diester and controlling the amount of hydrolyzable halogen contained in the aromatic carbonic acid diester to a value smaller than a predetermined value.
    • 通过芳族碳酸二酯和芳族二羟基化合物之间的酯交换反应制备芳族聚碳酸酯的方法,其中芳族碳酸二酯通过由以下通式(1)表示的芳族草酸二酯的脱羰反应获得 ):其中两个Ar是相同或不同的具有6至14个碳原子的芳族烃基,并且具有5ppm或更低的可水解卤素含量。根据本发明,具有高分子量和优异颜色的芳族聚碳酸酯可以 通过使用通过芳香族草酸二酯的脱羰获得的芳香族碳酸二酯和将芳香族碳酸二酯中含有的可水解卤素的量控制在较小的值,可以容易地制造而不损害用于制备芳族聚碳酸酯的酯交换反应性 超过预定值。
    • 10. 发明授权
    • Process for production of aromatic polycarbonate resin and molded article of aromatic polycarbonate resin
    • 芳香族聚碳酸酯树脂的制造方法和芳香族聚碳酸酯树脂的成型体
    • US06472496B2
    • 2002-10-29
    • US09840144
    • 2001-04-24
    • Kyosuke MatsumotoMasasi SimonaruToru SawakiKatsushi SasakiMasahiro MurakamiYoshiki Matsuoka
    • Kyosuke MatsumotoMasasi SimonaruToru SawakiKatsushi SasakiMasahiro MurakamiYoshiki Matsuoka
    • C08G6400
    • C08G64/307
    • An aromatic polycarbonate resin is produced under the conditions that the flow velocity of the reaction mixture in a pipe through which a molten reaction mixture passes is a specific value or over, the viscosity-average molecular weight of the reaction mixture is 1,000 or more, the sum of the average retention times of the reaction mixture is not longer than 3 hours, the wall temperature of the pipe through which a molten reaction mixture passes is set to be higher than the temperature of the reaction mixture in the pipe, the catalyst deactivation agent is added within 2 hours after the completion of the melt polycondensation reaction, the filtration is carried out by using a filter having a specific retained particle size under a specific pressure difference, specific treated amount of the aromatic polycarbonate resin per unit area of the filter and a ratio of W (flow quantity of filtered polymer)×1,000/A (maximum area of the polymer path in the filtration vessel) falling within a specific range, etc.
    • 在熔融反应混合物通过的管中的反应混合物的流速为特定值以上的条件下制造芳香族聚碳酸酯树脂,反应混合物的粘均分子量为1000以上 反应混合物的平均保留时间的总和不超过3小时,熔融反应混合物通过的管的壁温设定为高于管中的反应混合物的温度,催化剂失活剂 在熔融缩聚反应完成后2小时内加入,过滤通过使用具有特定保留粒径的特定压力差的过滤器,每单位面积过滤器的芳族聚碳酸酯树脂的特定处理量, 过滤聚合物的流量(以过滤聚合物的流量计)×1,000 / A(过滤容器内的聚合物路径的最大面积) 特点范围等