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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
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。
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公开(公告)号:US4746721A
公开(公告)日:1988-05-24
申请号:US893206
申请日:1986-08-05
申请人: Ryuzo Ueno , Yoshiyasu Masada , Taihei Hamasaki , Toru Mori
发明人: Ryuzo Ueno , Yoshiyasu Masada , Taihei Hamasaki , Toru Mori
IPC分类号: C08G63/60 , C08G63/66 , C08G63/682 , C08G63/688 , C08G63/02
CPC分类号: C08G63/66 , C08G63/60 , C08G63/682 , C08G63/688
摘要: A melt-processable copolyester composed of the following structural units (I), (II) and (III) and/or (IV) as main structural components, whereinunit (I) is represented by the formula ##STR1## wherein X.sub.1, X.sub.2, X.sub.3 and X.sub.4, independently from each other, represent H, F, Cl, Br, CH.sub.3 or C(CH.sub.3).sub.3, provided that X.sub.1 to X.sub.4 do not simultaneously represent H, and n is 2 or 4,unit (II) is at least one unit selected from the group consisting of ##STR2## wherein at least one of the hydrogen atoms in each aromatic ring in units (II), (III) and (IV) may be substituted by an alkyl or alkoxy group having 1 to 4 carbon atoms or a halogen atom.The proportion of unit (I) is 2.5 to 35 mole %, the proportion of unit (II) is 2.5 to 35 mole %, and the proportion of unit (III), (IV) or a combination of units (III) and (IV) is 30 to 95 mole %.
摘要翻译: 由以下结构单元(I),(II)和(III)和/或(IV)作为主要结构组分组成的可熔融加工的共聚酯,其中单元(I)由下式表示:其中X1,X2 ,X3和X4彼此独立地表示H,F,Cl,Br,CH3或C(CH3)3,条件是X1至X4不同时表示H,n为2或4,单元(II)为 选自由
+ TR 组成的组中的至少一个单元,其中每个芳环中的至少一个氢原子单元 (II),(III)和(IV)可以被具有1至4个碳原子的烷基或烷氧基或卤素原子取代。 单位(I)的比例为2.5〜35摩尔%,单位(II)的比例为2.5〜35摩尔%,单位(III),(IV)或单位(三)和( IV)为30〜95摩尔%。
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