Liquid-crystal polyester resin
    1.
    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

    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。

    Liquid-crystalline polymer
    3.
    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

    IPC分类号: C08G6300

    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。

    Liquid-crystal polyester resin
    4.
    发明授权
    Liquid-crystal polyester resin 有权
    液晶聚酯树脂

    公开(公告)号:US06984712B2

    公开(公告)日:2006-01-10

    申请号:US10496490

    申请日:2002-11-25

    IPC分类号: C08G63/06 C08F20/00 C09K19/32

    摘要: The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the resin and an alkaline metal compound in an amount of 10-3000 ppm as alkaline metal based on the total monomer components of the resin. The liquid-crystalline polyester resin of the present invention has good colorability, improved heat resistance and good mechanical properties.

    摘要翻译: 本发明提供一种液晶聚酯树脂,其包含基于总量为1-5000mmol%的来源于2-羟基-3-萘甲酸和/或2-羟基萘-3,6-二羧酸的单体单元 树脂的单体组分和碱金属化合物,其量为基于树脂总单体成分的碱金属为10-3000ppm。 本发明的液晶聚酯树脂具有良好的着色性,耐热性和良好的机械性能。

    Columnar crystals of 6-hydroxy-2-naphthoic acid and process for manufacturing the same
    5.
    发明授权
    Columnar crystals of 6-hydroxy-2-naphthoic acid and process for manufacturing the same 有权
    6-羟基-2-萘甲酸的柱状晶体及其制造方法

    公开(公告)号:US06451109B1

    公开(公告)日:2002-09-17

    申请号:US09830119

    申请日:2001-04-24

    IPC分类号: C30B700

    CPC分类号: C07C51/43 C30B7/00 C07C65/11

    摘要: A process for manufacturing columnar crystals of 6-hydroxy-2-naphthoic acid comprising the steps of, dissolving crude 6-hydroxy-2-naphthoic acid product in an aqueous solvent, adding crystalline 3-hydroxy-2,7-naphthoic acid or columnar crystals as seed crystals, and cooling the mixture to precipitate the desired crystals. The present invention further provides columnar crystals of 6-hydroxy-2-naphthoic acid which have X-ray diffraction peaks 2&thgr; in 16.8-17.8 and/or 21.3-22.3.

    摘要翻译: 一种制备6-羟基-2-萘甲酸的柱状晶体的方法,包括以下步骤:将6-羟基-2-萘甲酸粗产物溶解在水性溶剂中,加入结晶的3-羟基-2,7-萘甲酸或柱状 晶体作为晶种,并冷却混合物以沉淀所需的晶体。 本发明还提供在16.8-17.8和/或21.3-22.3中具有X射线衍射峰2θ的6-羟基-2-萘甲酸的柱状晶体。

    Crystal of 2-hydroxynaphthalene-3-carboxylic acid and process for the preparation thereof
    6.
    发明授权
    Crystal of 2-hydroxynaphthalene-3-carboxylic acid and process for the preparation thereof 有权
    2-羟基萘-3-羧酸的晶体及其制备方法

    公开(公告)号:US06403827B1

    公开(公告)日:2002-06-11

    申请号:US09720994

    申请日:2001-01-03

    IPC分类号: C07C6334

    摘要: The present invention provides crystalline 2-hydroxynaphthalene-3-carboxylic acid (BON) characterized in that the average particle size is equal to or more than 157 &mgr;m and the proportion of the particles of which particle size is less than 74 &mgr;m is equal to or less than 14%. The crystalline composition of the present invention can be prepared by a process comprising the step of recrystallizing BON, especially at a high temperature, or by carrying out the acid precipitation step in the method for preparing BON at a high temperature.

    摘要翻译: 本发明提供结晶的2-羟基萘-3-羧酸(BON),其特征在于平均粒径等于或大于157μm,粒径小于74μm的颗粒的比例等于或等于 小于14%。 本发明的结晶组合物可以通过包括重结晶BON的步骤,特别是在高温下或通过在高温下进行BON制备方法进行酸沉淀步骤的方法来制备。