Process for producing propylene oxide
    2.
    发明申请
    Process for producing propylene oxide 审中-公开
    生产环氧丙烷的方法

    公开(公告)号:US20070004926A1

    公开(公告)日:2007-01-04

    申请号:US11168454

    申请日:2005-06-29

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12

    摘要: The present invention relates to a process for producing propylene oxide comprising (I) reacting propene with hydrogen peroxide in the presence of a catalyst to give a mixture (GI) comprising propylene oxide, unreacted propene, and oxygen; (II) separating propylene oxide from mixture (GI) to give a mixture (GII) comprising propene and oxygen; (III) reducing the oxygen comprised in mixture (GII) at least partially by reaction with hydrogen in the presence of a catalyst comprising Sn and at least one noble metal.

    摘要翻译: 本发明涉及一种生产环氧丙烷的方法,其包括(I)在催化剂存在下使丙烯与过氧化氢反应,得到包含环氧丙烷,未反应的丙烯和氧的混合物(GI) (II)将环氧丙烷与混合物(GI)分离,得到包含丙烯和氧的混合物(GII); (III)在包含Sn和至少一种贵金属的催化剂的存在下至少部分地通过与氢反应来还原混合物(GII)中包含的氧。

    Process For Producing Propylene Oxide
    3.
    发明申请
    Process For Producing Propylene Oxide 有权
    生产环氧丙烷的方法

    公开(公告)号:US20080167484A1

    公开(公告)日:2008-07-10

    申请号:US11994129

    申请日:2006-06-20

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12

    摘要: The present invention relates to a process for producing propylene oxide comprising (I) reacting propene with hydrogen peroxide in the presence of a catalyst to give a mixture (GI) comprising propylene oxide, unreacted propene, and oxygen; (II) separating propylene oxide from mixture (GI) to give a mixture (GII) comprising propene and oxygen; (III) reducing the oxygen comprised in mixture (GII) at least partially by reaction with hydrogen in the presence of a catalyst comprising Sn and at least one noble metal.

    摘要翻译: 本发明涉及一种生产环氧丙烷的方法,其包括(I)在催化剂存在下使丙烯与过氧化氢反应,得到包含环氧丙烷,未反应的丙烯和氧的混合物(GI) (II)将环氧丙烷与混合物(GI)分离,得到包含丙烯和氧的混合物(GII); (III)在包含Sn和至少一种贵金属的催化剂的存在下至少部分地通过与氢反应来还原混合物(GII)中包含的氧。

    Ferromagnetic pigments
    4.
    发明授权
    Ferromagnetic pigments 失效
    铁磁颜料

    公开(公告)号:US6024890A

    公开(公告)日:2000-02-15

    申请号:US101557

    申请日:1998-07-13

    IPC分类号: G11B5/706 H01F1/047 H01F1/06

    摘要: The present invention relates to phosphorus-containing ferromagnetic pigments comprising, in particular, from 30 to 70% by volume of a core, said core comprising essentially iron and cobalt, and from 30 to 70% of a shell, said shell comprising essentially aluminum, phosporus, silicon, oxygen, and optionally magnesium and sodium; the invention further relates to a process for preparation of said pigments, their use in magnetic recording materials and magnetic recording materials which contain such pigments.

    摘要翻译: PCT No.PCT / EP97 / 00062 Sec。 371日期1998年7月13日第 102(e)日期1998年7月13日PCT 1997年1月9日PCT PCT。 公开号WO97 / 26666 日期1997年7月24日本发明涉及含铁铁磁性颜料,其特别包含30至70体积%的芯,所述芯基本上包含铁和钴,以及30-70%的壳,所述 壳基本上包括铝,磷,硅,氧,以及任选的镁和钠; 本发明还涉及制备所述颜料的方法,它们在磁记录材料中的应用和含有这种颜料的磁记录材料。

    Preparation of acicular cobalt-containing magnetic iron oxide
    6.
    发明授权
    Preparation of acicular cobalt-containing magnetic iron oxide 失效
    针状钴磁性氧化铁的制备

    公开(公告)号:US5484628A

    公开(公告)日:1996-01-16

    申请号:US291559

    申请日:1994-08-16

    摘要: Acicular cobalt-containing magnetic iron oxides having a high coercive force and a core/shell structure and hence low temperature dependence of the coercive force are prepared by a process in which, in a first stage, surface activation is effected by means of iron(II) and cobalt ions under alkaline conditions on the iron oxide core under an inert gas atmosphere and thereafter, in a second stage, an epitactic coating of cobalt ferrite is applied, which coating is formed oxidatively from iron (II) and cobalt (II) hydroxide, likewise under alkaline reaction conditions. The total amount of cobalt ions used for doping remains unchanged compared with the known doped iron oxides or is even smaller. In the second process stage, the achievable coercive force can be controlled by the proportion of air in the gas mixture during the formation of the epitactic coating.

    摘要翻译: 通过一种方法制备具有高矫顽力和核/壳结构并因此矫顽力的低温依赖性的针状含钴磁性氧化铁,其中在第一阶段中,通过铁(II)进行表面活化 )和钴离子在碱性条件下在惰性气体气氛下在氧化铁芯上,然后在第二阶段施加钴铁氧体的中空涂层,该涂层由铁(II)和氢氧化钴(II)氧化形成 ,同样在碱性反应条件下。 用于掺杂的钴离子的总量与已知的掺杂的氧化铁相比保持不变,或甚至更小。 在第二工艺阶段,可以通过在形成外延涂层期间气体混合物中的空气比例来控制可实现的矫顽力。