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    • 81. 发明授权
    • Aromatic copolyamide
    • 芳香共聚酰胺
    • US5124436A
    • 1992-06-23
    • US664948
    • 1991-03-05
    • Gunter KeilKarl HeinrichPeter Klein
    • Gunter KeilKarl HeinrichPeter Klein
    • C08G69/32C08G69/36C08J5/18D01F6/80
    • C08G69/32C08G69/36
    • Aromatic copolyamides, preparation thereof and structures formed therefromThere are described aromatic copolyamides which are soluble in organic solvents for polyamides and which comprise at least 95 mol % of recurring structural units of formulae ##STR1## and up to 5 mol % of meta-bonded structural units E and/or F derived from aromatic dicarboxylic acids (E') and/or from aromatic diamines (F'), the sum total of the mole fractions of structural units A+E and the sum total of the mole fractions of structural units B+C+D+F being essentially of equal magnitude.The copolyamides of the present invention can be processed into fibers having high strengths and high breaking extensions.
    • 芳族共聚酰胺,其制备方法和由其形成的结构描述了可溶于聚酰胺的有机溶剂中的芳香族共聚酰胺,其包含至少95mol%的式OC a CO A NHAr'NH B的重复结构单元 和至多5摩尔%的由芳族二羧酸(E')和/或芳族二胺(F')衍生的间接键合结构单元E和/或F,结构单元A + E的摩尔分数的总和 并且结构单元B + C + D + F的摩尔分数的总和基本上等于大小。 本发明的共聚酰胺可以加工成具有高强度和高断裂延伸性的纤维。
    • 82. 发明授权
    • Fully aromatic copolyamide from 4,4'-diamino benzanilide
    • 来自4,4'-二氨基苯甲酰胺的全芳香族共聚酰胺
    • US5097015A
    • 1992-03-17
    • US601504
    • 1990-10-23
    • Georg-Emerich MiessPeter Klein
    • Georg-Emerich MiessPeter Klein
    • C08G69/26C08G69/32C08G69/36D01F6/60D01F6/80
    • C08G69/32C08G69/36
    • Aromatic copolyamides are described which are soluble in organic polyamide solvents and contain at least 95 mol % of repeating structural units of the formulae ##STR1## and up to 5 mol % of structural units E and/or F containing m-bonds and being derived from aromatic dicarboxylic acids (E') and/or aromatic diamines (F'), the sums of the molar proportions of structural units A+E and the molar proportions of structural units B+C+D+F being essentially the same. In these formulae, --Ar-- is a divalent aromatic radical whose valence bonds are in the para or comparable coaxial or parallel position, --R is hydrogen, lower alkyl radicals, lower alkoxy radicals or halogen, and R' is a direct bond, a polymethylene chain of 2 to 6 carbon atoms, --O--, --S--, --CO-- or --SO.sub.2 --, or a group of the formula --O--Ar'--O--, in which Ar' has the same meanings as Ar. The proportions of the diamine structural units B, C and D, relative to the total amount of these diamine structural units, are within the following limits:______________________________________ structural unit B: 5-60 mol %, structural unit C: 10-80 mol %, structural unit D: 10-85 mol %. ______________________________________
    • 描述了芳族共聚酰胺,其可溶于有机聚酰胺溶剂并且含有至少95mol%的式A的重复结构单元和至多5mol%的结构单元E和/或 含有m键并由芳族二羧酸(E')和/或芳族二胺(F')衍生的F,结构单元A + E与结构单元B + C + D的摩尔比例之和 + F基本相同。 在这些式中,-Ar-是二价芳族基团,其价键在对位或可比较的同轴或平行位置,-R是氢,低级烷基,低级烷氧基或卤素,R'是直接键, 2至6个碳原子的多亚甲基链,-O - , - S - , - CO-或-SO 2 - 或式-O-Ar'-O-基团,其中Ar'具有与Ar相同的含义 。 二胺结构单元B,C和D相对于这些二胺结构单元的总量的比例在以下限度内: - 结构单元B:5-60mol%, - 结构单元C:10-80mol %,结构单元D:10-85mol%。 -
    • 86. 发明授权
    • Infantry projectile
    • 步兵射弹
    • US4228973A
    • 1980-10-21
    • US637669
    • 1975-12-02
    • Peter Klein
    • Peter Klein
    • F42B10/02F42B15/18F42B13/00F42B15/10
    • F42B10/02
    • An infantry projectile includes an elongated projectile body having a cylindrical or frusto-conical surface concentrically arranged about its longitudinal axis. The projectile body has a leading end and a trailing end each extending transversely of the longitudinal axis. The leading end is disposed at an oblique angle to the longitudinal axis for affording a trimming action on the projectile when it is in flight. A flow control projection is provided on the surface of the projectile body between its ends so that the aerodynamic center of the projectile is located below its center of gravity when the flow control projection is located on the lower surface of the projectile body and in a vertical plane extending through the longitudinal axis of the body.
    • 步兵射弹包括一个细长的射弹体,其具有围绕其纵向轴线同心布置的圆柱形或截头圆锥形表面。 射弹体具有前纵端和纵向轴线各自延伸的尾端。 引导端设置成与纵向轴线成倾斜的角度,以便在飞行时对抛射体进行修整作用。 流体控制突起在其两端之间的射弹体的表面上设置,使得当流量控制突起位于射弹体的下表面上时,射弹的空气动力学中心位于其重心的下方,并且垂直 平面延伸穿过身体的纵向轴线。