Fluorinated aromatic diamine
    21.
    发明授权
    Fluorinated aromatic diamine 失效
    氟化芳族二胺

    公开(公告)号:US4203922A

    公开(公告)日:1980-05-20

    申请号:US841085

    申请日:1977-10-11

    Abstract: This invention relates to a novel aromatic diamine and more particularly to the use of said diamine for the preparation of thermally stable high-molecular weight polymers including, for example, polyamides, polyamideimides, polyimides, and the like. This diamine is obtained by reacting a stoichometric amount of a disodium salt of 2,2-bis(4-hydroxyphenyl) hexafluoropropane with 4-chloronitrobenzene to obtain an intermediate, 2,2-bis[4-(4-nitrophenoxy)phenyl] hexafluoropropane, which is reduced to the corresponding 2,2-bis[4-(4-aminophenoxy)phenyl] hexafluoropropane.

    Abstract translation: 本发明涉及一种新的芳族二胺,更具体地说涉及所述二胺用于制备热稳定的高分子量聚合物(包括例如聚酰胺,聚酰胺酰亚胺,聚酰亚胺等)的用途。 该二胺是通过使2,2-二(4-羟基苯基)六氟丙烷的二钠盐与4-氯硝基苯反应得到中间体2,2-双[4-(4-硝基苯氧基)苯基]六氟丙烷 ,其还原成相应的2,2-双[4-(4-氨基苯氧基)苯基]六氟丙烷。

    Perfluoroisopropylidene dianhydride and polyimides prepared therefrom
    22.
    发明授权
    Perfluoroisopropylidene dianhydride and polyimides prepared therefrom 失效
    全氟异亚丙基二酐和由其制备的聚酰亚胺

    公开(公告)号:US4196277A

    公开(公告)日:1980-04-01

    申请号:US914327

    申请日:1978-06-12

    CPC classification number: C08G73/20 C07C65/24 C08G73/1053 C08G73/18

    Abstract: This invention relates to a novel aromatic dianhydride and more particularly to the use of said dianhydride for the preparation of thermally stable high-molecular weight polymers including, for example, polybenzimidazoles, polypyrrones, polyimides, and the like. This dianhydride is obtained by reacting a stoichiometric amount of a disodium salt of 2,2-bis(4-hydroxyphenyl) hexafluoropropane with 4-chloro-N-phenylphthalimide to obtain an intermediate, 2,2-bis[4-(3,4-phenylphthalimidephenoxy)phenyl] hexafluoropropane, which is oxidized to the corresponding bis[4-(3,4-dicarboxyphenoxy)phenyl]perfluoroisopropylidene dianhydride.

    Abstract translation: 本发明涉及一种新的芳族二酸酐,更具体地说涉及所述二酐用于制备热稳定的高分子量聚合物(包括例如聚苯并咪唑,聚吡咯,聚酰亚胺等)的用途。 该二酐通过使化学计量量的2,2-双(4-羟基苯基)六氟丙烷的二钠盐与4-氯-N-苯基邻苯二甲酰亚胺反应获得中间体2,2-双[4-(3,4 - 苯基苯基亚氨基苯氧基)苯基]六氟丙烷,其被氧化成相应的双[4-(3,4-二羧基苯氧基)苯基]全氟异亚丙基二酐。

    Polyimide sealant composition
    23.
    发明授权
    Polyimide sealant composition 失效
    聚酰亚胺密封剂组合物

    公开(公告)号:US3951902A

    公开(公告)日:1976-04-20

    申请号:US524607

    申请日:1974-11-18

    CPC classification number: C08G73/122

    Abstract: A compliant polyimide having superior thermal-mechanical properties can be produced by reacting an aromatic bis(furfurylimide) with an aliphatic ether bis(maleimide) via a Diels-Alder reaction. These polyimides display a long-term thermal-oxidative stability and a high percent recoverable elongation to break, and they are suitable for use as films, fibers, coatings, adhesives, structures, and sealants.

    Abstract translation: 通过Diels-Alder反应使芳族双(糠酰亚胺)与脂族醚双(马来酰亚胺)反应,可以制备具有优异热机械性能的顺应性聚酰亚胺。 这些聚酰亚胺显示长期的热氧化稳定性和高可回收的断裂伸长率,并且它们适合用作薄膜,纤维,涂料,粘合剂,结构和密封剂。

    Transverse connector with cam activated engagers
    27.
    发明授权
    Transverse connector with cam activated engagers 有权
    带凸轮激活的接头的横向连接器

    公开(公告)号:US08062338B2

    公开(公告)日:2011-11-22

    申请号:US12364238

    申请日:2009-02-02

    Abstract: An adjustable transverse connector connects orthopedic stabilization rods that may be parallel or skewed in orientation relative to each other The connector may include two sections that are joined together by a fastener. The connector may be adjustable in many ways. The overall length of the connector may be adjustable. The rod openings of the connector may be partially rotatable about a longitudinal axis of the connector. The two sections of the connector may be angulated. The connector may include cam locks that securely attach the connector to the rods. Rotating a cam lock may extend a rod engager into a rod opening. The rod engager may be a portion of the cam lock. The extension of the rod engager into a rod opening may push a rod against a body of the transverse connector to form a frictional engagement between the connector, the rod, and the rod engager.

    Abstract translation: 可调横向连接器连接可相对于彼此相对平行或倾斜的矫形器稳定杆。连接器可包括通过紧固件连接在一起的两个部分。 连接器可以以许多方式调节。 连接器的总长度可以是可调整的。 连接器的杆开口可以围绕连接器的纵向轴线部分地旋转。 连接器的两个部分可以成角度。 连接器可以包括将连接器牢固地连接到杆上的凸轮锁。 旋转凸轮锁可以将杆接合件延伸到杆开口中。 杆接合器可以是凸轮锁的一部分。 杆接合器延伸到杆开口中可以将杆推向横向连接器的主体,以在连接器,杆和杆接合器之间形成摩擦接合。

    Distraction pins for fluid aspiration
    28.
    发明申请
    Distraction pins for fluid aspiration 审中-公开
    用于流体吸入的牵引针

    公开(公告)号:US20110112436A1

    公开(公告)日:2011-05-12

    申请号:US12927158

    申请日:2010-11-08

    Abstract: A distraction pin for aspiration of a bone fluid and marrow. The pin includes an elongate metallic shaft of generally uniform diameter having a proximate end. The proximate end of the shaft includes an adaptor (attachment means) and a longitudinal bore extending from the distal end to the proximate end. The distal end of the shaft includes threading adapted for screwing the shaft into bone. The distal end also includes at least two fenestrations transverse to the longitudinal bore.

    Abstract translation: 用于吸入骨液和骨髓的牵引针。 销包括具有近似端部的大致均匀直径的细长金属轴。 轴的近端包括适配器(附接装置)和从远端延伸到近端的纵向孔。 轴的远端包括适于将轴旋入骨头的螺纹。 远端还包括横向于纵向孔的至少两个窗孔。

    LOCKING MECHANISMS AND ASSOCIATED METHODS
    30.
    发明申请
    LOCKING MECHANISMS AND ASSOCIATED METHODS 有权
    锁定机制及相关方法

    公开(公告)号:US20090105831A1

    公开(公告)日:2009-04-23

    申请号:US12044186

    申请日:2008-03-07

    Abstract: A method and apparatus is provided for use with a surgical implant to secure fasteners, such as bone screws or pins. An anti-backout mechanism is used to preventing migration of the fasteners after the implant is installed. In one example, an anti-backout mechanism includes a locking plate having a locked position and an unlocked position. The locking plate has one or more protrusions that are configured to prevent migration the fasteners when the locking plate is in the locked position.

    Abstract translation: 提供了一种用于外科植入物以固定紧固件(例如骨螺钉或销钉)的方法和装置。 防止退出机构用于在植入物安装之后防止紧固件的移动。 在一个示例中,防止退出机构包括具有锁定位置和解锁位置的锁定板。 锁定板具有一个或多个突起,其被构造成当锁定板处于锁定位置时防止紧固件移动。

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