Wholly aromatic mesomorphic polyester amides and the preparation thereof
    51.
    发明授权
    Wholly aromatic mesomorphic polyester amides and the preparation thereof 失效
    全芳族介晶聚酰胺及其制备方法

    公开(公告)号:US4722993A

    公开(公告)日:1988-02-02

    申请号:US937677

    申请日:1986-12-04

    IPC分类号: C08G69/32 C08G69/44 C08G63/54

    CPC分类号: C08G69/44 C08G69/32

    摘要: Wholly aromatic mesomorphic polyester amides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of(a) from 3 to 30 mol % of repeat units of the formula ##STR1## (b) from 3 to 25 mol % of one or more of the repeat units of the formulae II, III and IV ##STR2## (c) a molar amount corresponding to the total amount of components (a) and (b) of repeat units of the formulae V and/or VI ##STR3## (d) repeat units of the formula VII ##STR4## (e) if desired from 5 to 25 mol % of repeat units of the formula VIII ##STR5## the mole percentages of components (a), (b), (c), (d) and (e) adding up to 100 mol % in each case, and the preparation and use thereof.

    摘要翻译: 完全芳香族介晶聚酯酰胺,其在320℃以下形成液晶纤维形成熔体,并由(a)3至30摩尔%的式(I)(b)的重复单元3至25组成 (c)摩尔量对应于组分(a)和(b)的总量的摩尔量, 式(VI)的重复单元(d)如果需要,式VII(e)的重复单元如果需要5至25摩尔%的式VIII的重复单元, 成分(a),(b),(c),(d)和(e))的摩尔百分比,在各种情况下加到100摩尔%,以及其制备和使用。

    Stabilized poly(alkylene terephthalate) molding materials
    52.
    发明授权
    Stabilized poly(alkylene terephthalate) molding materials 失效
    稳定的聚(对苯二甲酸亚烷基酯)成型材料

    公开(公告)号:US4229553A

    公开(公告)日:1980-10-21

    申请号:US057130

    申请日:1979-07-12

    IPC分类号: C08L67/00 C08L67/02 C08L63/00

    CPC分类号: C08L67/02

    摘要: Poly(alkylene terephthalate) molding materials which contain, as the stabilizer, a diepoxide of molecular weight from 200 to 2,000, and a catalyst which is an alkali metal salt of a chelating agent possessing one or more --N(CH.sub.2 --COO.sup.-).sub.2 groups in the molecule. Preferred catalysts are trisodium nitrilotriacetate and tetrasodium ethylenediaminetetraacetate. The molding materials may be used for the manufacture of moldings, films, monofilaments and fibers.

    摘要翻译: 含有分子量为200〜2000的二环氧化物作为稳定剂的聚(对苯二甲酸亚烷基酯)成型材料和具有一个或多个-N(CH 2 -CO 2)2的螯合剂的碱金属盐的催化剂 分子中的基团。 优选的催化剂是次氮基三乙酸三钠和乙二胺四乙酸四钠。 成型材料可用于制造模制品,薄膜,单丝和纤维。

    ROD-SHAPED APATITE CRYSTALS HAVING A SPECIFIC LENGTH-TO-WIDTH RATIO
    58.
    发明申请
    ROD-SHAPED APATITE CRYSTALS HAVING A SPECIFIC LENGTH-TO-WIDTH RATIO 失效
    具有特定长度比的ROD形状的APATITE晶体

    公开(公告)号:US20070065355A1

    公开(公告)日:2007-03-22

    申请号:US11557291

    申请日:2006-11-07

    IPC分类号: C01B25/455

    摘要: The rod-shaped apatite crystals of the formula Ca5(PO4)3(OH)xFy have the following features a) the length-to-breadth ratio of the crystals is at least ≧5 and b) x+y=1, where if x or y≠0 the total amount of the crystals is present as a mixture of individual hydroxyapatite crystals and fluoroapatite crystals and/or as mixed crystals, such that, based on the total amount of the crystals, (1−x)·100% of the hydroxide ions present if y=0 are replaced by fluoride ions. The invention furthermore describes dispersions which contain such rod-shaped apatite crystals, and a process for the preparation of the dispersions or of the apatite crystals.

    摘要翻译: 式Ca 3(PO 4)3(OH)x F的棒状磷灰石晶体 具有以下特征a)晶体的长宽比至少为> = 5,b)x + y = 1,其中如果x或y <0,则 晶体以单独的羟基磷灰石晶体和氟磷灰石晶体和/或混合晶体的混合物存在,使得基于晶体的总量(1-x)。如果y = 0,存在100%的氢氧根离子 被氟离子代替。 本发明还描述了含有这种棒状磷灰石晶体的分散体以及制备分散体或磷灰石晶体的方法。