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18 条记录 (耗时 0.015 秒)

    Wholly aromatic liquid-crystalline polyester
    1.
    发明授权
    Wholly aromatic liquid-crystalline polyester 有权
    全芳族液晶聚酯

    公开(公告)号：US08044151B2

    公开(公告)日：2011-10-25

    申请号：US12260428

    申请日：2008-10-29

    申请人： Motoki Asahara ,  Hiroaki Terada ,  Hiroyuki Kato

    发明人： Motoki Asahara ,  Hiroaki Terada ,  Hiroyuki Kato

    IPC分类号： C08G63/08

    CPC分类号： C08G63/605 ,  C09K19/3809 ,  C09K2219/11

    摘要： The present invention provides a wholly aromatic liquid-crystalline polyester consisting of the repeating units represented by formulae (I), (II), (III) and (IV): wherein: the molar proportion of the repeating unit represented by formula (I) based on the total repeating units constituting the wholly aromatic liquid-crystalline polyester is 40-80 mol %; the molar ratio of the total amount of the repeating units represented by formulae (II) and (III) to the repeating unit represented by formula (IV) is from 90/100 to 100/90; the molar proportion of the repeating unit represented by formula (II) based on the total amount of the repeating units represented by formulae (II) and (III) is 80-99.9 mol%; and the two “—O—” attached to the benzene ring in formula (III) are positioned meta or para to each other and “Ar” in formula (IV) represents a bivalent aromatic group. The wholly aromatic liquid-crystalline polyester of the present invention exhibits excellent dielectric properties in high frequency regions as well as good mechanical properties such as impact strength.

    摘要翻译： 本发明提供由式（I），（II），（III）和（IV）表示的重复单元组成的全芳族液晶聚酯：其中：由式（I）表示的重复单元的摩尔比例 基于构成全芳香族液晶聚酯的总重复单元为40〜80摩尔％。 由式（II）和（III）表示的重复单元的总量与由式（IV）表示的重复单元的摩尔比为90/100〜100/90; 由式（II）表示的重复单元相对于式（II）和（III）表示的重复单元的总量的摩尔比例为80-99.9摩尔％ 并且与式（III）中的苯环相连的两个“-O-”彼此定位为间位或对位，式（IV）中的“Ar”表示二价芳基。 本发明的全芳香族液晶聚酯在高频区域表现出优异的介电性能以及良好的机械性能如冲击强度。

    Method for manufacturing wholly aromatic liquid-crystalline polyester resin
    4.
    发明申请
    Method for manufacturing wholly aromatic liquid-crystalline polyester resin 失效
    全芳香族液晶聚酯树脂的制造方法

    公开(公告)号：US20060084747A1

    公开(公告)日：2006-04-20

    申请号：US11245200

    申请日：2005-10-07

    申请人： Motoki Asahara ,  Toshiki Nishino

    发明人： Motoki Asahara ,  Toshiki Nishino

    IPC分类号： C08K3/34 ,  C08K3/40

    CPC分类号： C08G63/78 ,  C08G63/065 ,  C08G63/19 ,  C08G63/605

    摘要： The present invention provides a method for manufacturing a wholly aromatic liquid-crystalline polyester resin comprising the steps of: 1) acylating the hydroxy group of major monomer components selected from the group consisting of aromatic hydroxycarboxylic acid, aromatic diol and aromatic dicarboxylic acid, with an acylating agent, provided that said major monomer components comprise at least one of aromatic hydroxycarboxylic acid and aromatic diol; and 2) polycondensing said major monomer components of which hydroxy group is acylated, wherein, the polycondensation reaction is carried out in the presence of a metal dihydrogen phosphate in an amount of 1-5000 ppm based on the total monomer components, and a liquid-crystalline polyester resin manufactured by the method and a composition comprising said resin.

    摘要翻译： 本发明提供一种全芳香族液晶聚酯树脂的制造方法，包括以下步骤：1）将选自芳族羟基羧酸，芳族二醇和芳族二羧酸的主要单体成分的羟基与 所述主要单体组分包含芳族羟基羧酸和芳族二醇中的至少一种; 和2）缩聚其羟基被酰化的所述主要单体成分，其中缩聚反应在磷酸金属盐存在下以基于总单体组分的1-5000ppm的量存在下进行， 通过该方法制造的结晶性聚酯树脂和包含所述树脂的组合物。

    LIQUID-CRYSTALLINE POLYESTER BLEND
    5.
    发明申请
    LIQUID-CRYSTALLINE POLYESTER BLEND 有权
    液晶聚合物混合物

    公开(公告)号：US20090111926A1

    公开(公告)日：2009-04-30

    申请号：US12260536

    申请日：2008-10-29

    申请人： Satoru Yonezawa ,  Motoki Asahara ,  Hisanari Fujiwara ,  Hiroaki Terada ,  Hiroyuki Kato

    发明人： Satoru Yonezawa ,  Motoki Asahara ,  Hisanari Fujiwara ,  Hiroaki Terada ,  Hiroyuki Kato

    IPC分类号： C08K3/38 ,  C08L71/00 ,  C08K3/40

    CPC分类号： C09K19/3809 ,  C08K7/14 ,  C08L67/00 ,  C08L2205/02 ,  C08L2666/18

    摘要： The present invention provides a liquid-crystalline polyester blend, which is obtained by combining a liquid-crystalline polyester (A) and a liquid-crystalline polyester (B) such that the ratio by weight of (A)/(B) is 99/1 to 80/20: liquid-crystalline polyester (A) which consists of aromatic oxycarbonyl repeating units, aromatic dioxy repeating units and aromatic dicarbonyl repeating units, and contains 40-80 mol % of the repeating unit represented by formula (I) based on the total repeating units constituting the liquid-crystalline polyester (A); liquid-crystalline polyester (B) which comprises repeating units represented by formulae (I) and (II), wherein the molar proportion of the total amount of the repeating units represented by formulae (I) and (II) based on the total amount of the repeating units constituting the liquid-crystalline polyester (B) is greater than or equal to 90 mol % and the molar proportion of the repeating units represented by formulae (I) to (II) is from 10/90 to 50/50. The liquid-crystalline polyester blend of the present invention exhibits excellent dielectric properties in high frequency regions as well as good impact strength and molding processability.

    摘要翻译： 本发明提供一种液晶聚酯共混物，其通过将液晶聚酯（A）和液晶聚酯（B）组合使得（A）/（B）的重量比为99 / 1〜80/20：由芳香族氧羰基重复单元，芳香族二氧基重复单元和芳香族二羰基重复单元构成的液晶性聚酯（A），并且含有40〜80摩尔％的式（I）所示的重复单元，基于 构成液晶聚酯（A）的总重复单元; 含有由式（I）和（II）表示的重复单元的液晶聚酯（B），其中由式（I）和（II）表示的重复单元的总量的摩尔比例基于式 构成液晶聚酯（B）的重复单元大于或等于90摩尔％，由式（I）至（II）表示的重复单元的摩尔比为10/90〜50/50。 本发明的液晶聚酯共混物在高频区域表现出优异的介电性能以及良好的冲击强度和成型加工性能。

    Liquid-crystal polyester resin
    8.
    发明申请
    Liquid-crystal polyester resin 审中-公开
    液晶聚酯树脂

    公开(公告)号：US20070010647A1

    公开(公告)日：2007-01-11

    申请号：US10574472

    申请日：2004-09-29

    申请人： Ryuzo Ueno ,  Masaya Kitayama ,  Hiroyuki Kato ,  Hiroaki Terada ,  Motoki Asahara

    发明人： Ryuzo Ueno ,  Masaya Kitayama ,  Hiroyuki Kato ,  Hiroaki Terada ,  Motoki Asahara

    IPC分类号： C08G63/02

    CPC分类号： C08G63/605

    摘要： The present invention provides a liquid-crystalline polyester resin, essentially consisting of the repeating units represented by formulae [I]-[IV]: wherein p, q, r and s satisfy the following formulae: 0.4≦p/q≦2.0, 2≦r≦15, 2≦s≦15, and p+q+r+s=100, provided that the liquid-crystalline polyester resin has a melting point of 190-250° C. determined by differential scanning calorimetry. The liquid-crystalline polyester resin of the present invention exhibits a good molding processability at low temperatures and excellent mechanical properties.

    摘要翻译： 本发明提供了一种液晶聚酯树脂，其基本上由式[I] - [IV]表示的重复单元组成：其中p，q，r和s满足下式：0.4 <= p / q <= 2.0 ，如果液晶聚酯树脂的熔点为190-250℃，则通过差示确定，2 <= r <= 15,2 <= s <= 15和p + q + r + s = 扫描量热法。 本发明的液晶聚酯树脂在低温下表现出良好的模塑加工性能和优异的机械性能。

    Method for producing pellets of liquid-crystalline polymer or pellets of liquid-crystalline polymer composition
    9.
    发明申请
    Method for producing pellets of liquid-crystalline polymer or pellets of liquid-crystalline polymer composition 审中-公开
    制备液晶聚合物或液晶聚合物组合物颗粒的颗粒的方法

    公开(公告)号：US20060284333A1

    公开(公告)日：2006-12-21

    申请号：US11444339

    申请日：2006-06-01

    申请人： Motoki Asahara ,  Hiroyuki Kato

    发明人： Motoki Asahara ,  Hiroyuki Kato

    IPC分类号： B29B9/06

    CPC分类号： B29B9/06 ,  B29B9/12 ,  B29B9/14 ,  B29K2105/0079

    摘要： The present invention provides a method for producing pellets or pellets of a liquid-crystalline polymer composition with a reduced amount of anionic impurities such as chloride, nitrate and sulfate ions. The present invention provides a method for producing pellets of a liquid-crystalline polymer, which comprises: providing a molten state liquid-crystalline polymer in a polycondensation reaction vessel, pulling out the liquid-crystalline polymer from a valve at the bottom of the reaction vessel through a die to give a strand of the polymer, cooling the strand on a water cooling conveyor positioned below the reaction vessel, and cutting the strand to give the pellets, wherein the cooling water for the strand is pure water whose electrical conductance is not more than 10 μS/cm.

    摘要翻译： 本发明提供了一种制备具有减少量的阴离子杂质如氯化物，硝酸根和硫酸根离子的液晶聚合物组合物的颗粒或颗粒的方法。 本发明提供了一种制备液晶聚合物颗粒的方法，其包括：在缩聚反应容器中提供熔融态液晶聚合物，从反应容器底部的阀抽出液晶聚合物 通过模头给出聚合物的股线，在位于反应容器下方的水冷却输送机上冷却该股线，并且切断该股线以得到该粒料，其中该线材的冷却水是纯电导率不超过 超过10亩/厘米。

    Liquid-crystalline polymer
    10.
    发明授权
    Liquid-crystalline polymer 失效
    液晶聚合物

    公开(公告)号：US06388045B1

    公开(公告)日：2002-05-14

    申请号：US09743198

    申请日：2001-01-08

    申请人： Ryuzo Ueno ,  Masaya Kitayama ,  Kiichi Kometani ,  Taihei Hamasaki ,  Motoki Asahara

    发明人： Ryuzo Ueno ,  Masaya Kitayama ,  Kiichi Kometani ,  Taihei Hamasaki ,  Motoki Asahara

    IPC分类号： C08G6300

    CPC分类号： C08G63/668 ,  C08G63/13 ,  C08G63/605 ,  C08G69/44

    摘要： Provided is a liquid crystalline polymer which is obtained by copolymerizing at least one polyfunctional aromatic monomer selected from the group consisting of the compounds represented by the formulae (I), (II) and (III) below with at least one polymerizable monomer. The liquid crystalline polymer of the present invention is excellent in heat resistance, molding properties, flow properties and mechanical properties, especially it provide molded article with improved weld strength.

    摘要翻译： 本发明提供一种液晶聚合物，其通过使至少一种选自下述式（I），（II）和（III）表示的化合物的多官能芳族单体与至少一种可聚合单体共聚而获得。 本发明的液晶聚合物的耐热性，成型性，流动性和机械性能优异，特别是提供具有改善的焊接强度的模制品。