Cephalosporin compound and process for preparing the same
    6.
    发明授权
    Cephalosporin compound and process for preparing the same 失效
    头孢菌素化合物及其制备方法

    公开(公告)号:US4576938A

    公开(公告)日:1986-03-18

    申请号:US447809

    申请日:1982-12-08

    摘要: A cephalosporin compound of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom, a lower alkyl group, a carboxy(lower)alkyl group, a hydroxy(lower)alkyl group, a carbamoyl(lower)alkyl group, an N-(lower)alkyl-carbamoyl(lower)alkyl group, a cycloalkyl group, a carboxycycloalkyl group, or a tetrazolylmethyl group, R.sup.2 is a hydrogen atom, a lower alkyl group, a formyl group or a lower alkanol group, R.sup.3 is a hydrogen atom, or R.sup.2 and R.sup.3 are combined together to form an aralkylidene group, or a pharmaceutically acceptable salt thereof which is useful as an antimicrobial agent, and process for their preparation.

    摘要翻译: 下式的头孢菌素化合物:其中R1是氢原子,低级烷基,羧基(低级)烷基,羟基(低级)烷基,氨基甲酰基(低级)烷基,N-( 低级)烷基 - 氨基甲酰基(低级)烷基,环烷基,羧基环烷基或四唑基甲基,R2是氢原子,低级烷基,甲酰基或低级链烷醇基,R3是氢原子, 或R2和R3组合在一起形成可用作抗微生物剂的芳烷基或其药学上可接受的盐及其制备方法。

    Fine carbon fiber, method for producing the same and electrically conducting material comprising the fine carbon fiber
    9.
    发明授权
    Fine carbon fiber, method for producing the same and electrically conducting material comprising the fine carbon fiber 失效
    细碳纤维,其制造方法和包含细碳纤维的导电材料

    公开(公告)号:US06489025B2

    公开(公告)日:2002-12-03

    申请号:US09832792

    申请日:2001-04-12

    IPC分类号: D01F600

    摘要: A fine carbon fiber having an outer diameter of about 1 to about 80 nm and an aspect ratio of 10 to 30,000, comprising a hollow center portion and a multi-layer sheath structure of a plurality of carbon layers, the layers forming annual rings, wherein the sheath-forming carbon layers form an incomplete sheath, i.e., the carbon layers are partially broken or disrupted in a longitudinal direction, and the outer diameter of the carbon fiber and/or the diameter of the hollow center portion are not uniform in a longitudinal direction. The carbon fiber is obtained by instantaneously reacting a carrier gas at a high temperature and an organic compound gas kept at a temperature below the decomposition temperature of the transition metal compound and has a conductivity equivalent to that of a conventional vapor phase method and is useful as a filler material in resins, rubbers, paints and the like.

    摘要翻译: 外径约1〜约80nm,纵横比为10〜30,000的细碳纤维,其包含多个碳层的中空中心部分和多层护套结构,所述层形成年轮环,其中, 鞘形成碳层形成不完整的护套,即碳层在纵向上部分断裂或破裂,并且碳纤维的外径和/或中空中心部分的直径在纵向上不均匀 方向。 碳纤维通过使高温下的载气和保持在低于过渡金属化合物的分解温度的温度的有机化合物气体瞬时反应而获得,并且具有与常规气相法相当的导电性,可用作 树脂,橡胶,油漆等中的填充材料。

    Single-Walled Carbon Nanotubes, Carbon Fiber Aggregate Containing the Single-Walled Carbon Nanotubes, and Method for Producing Those
    10.
    发明申请
    Single-Walled Carbon Nanotubes, Carbon Fiber Aggregate Containing the Single-Walled Carbon Nanotubes, and Method for Producing Those 审中-公开
    单壁碳纳米管,含有单壁碳纳米管的碳纤维骨料及其生产方法

    公开(公告)号:US20090186223A1

    公开(公告)日:2009-07-23

    申请号:US12226619

    申请日:2007-04-24

    摘要: It relates to high purity single-walled carbon nanotubes having controlled diameter, useful as industrial materials, including high-strength carbon wire rods, particularly uniform single-walled carbon nanotubes having diameter fallen in a range of from 1.0 to 2.0 nm, and a method for producing the same efficiently, in large amount and inexpensively. The single-walled carbon nanotube obtained is characterized in that its diameter is fallen in a range of from 1.0 to 2.0 nm, and an intensity ratio IG/ID between G-band and D-band in a Raman spectrum is 200 or more. Furthermore, those single-walled carbon nanotubes are synthesized by a gas-phase flow CVD method that uses a saturated aliphatic hydrocarbon which is liquid at ordinary temperature as a first carbon source and an unsaturated aliphatic hydrocarbon which is gas at ordinary temperature as a second carbon source.

    摘要翻译: 本发明涉及具有受控直径的高纯度单壁碳纳米管,其可用作工业材料,包括高强度碳线材,直径在1.0-2.0nm范围内的特别均匀的单壁碳纳米管,以及方法 用于大量生产和低成本生产。 得到的单壁碳纳米管的特征在于其直径在1.0〜2.0nm的范围内,拉曼光谱中的G带和D带的强度比IG / ID为200以上。 此外,这些单壁碳纳米管通过气相流CVD法合成,该方法使用常温液体的饱和脂肪族烃作为第一碳源,作为常温下为气体的不饱和脂肪族烃作为第二碳 资源。