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    Addition reaction of hydroxyl-containing compounds with alkynes or allenes
    56.
    发明授权
    Addition reaction of hydroxyl-containing compounds with alkynes or allenes 失效
    含羟基的化合物与炔或丙烯的加成反应

    公开(公告)号：US6087538A

    公开(公告)日：2000-07-11

    申请号：US92059

    申请日：1998-06-05

    申请人： Joaquim Henrique Teles ,  Norbert Rieber ,  Klaus Breuer ,  Christopher William Rieker ,  Dirk Demuth ,  Hartmut Hibst ,  Alfred Hagemeyer

    发明人： Joaquim Henrique Teles ,  Norbert Rieber ,  Klaus Breuer ,  Christopher William Rieker ,  Dirk Demuth ,  Hartmut Hibst ,  Alfred Hagemeyer

    IPC分类号： B01J23/06 ,  B01J37/02 ,  C07B61/00 ,  C07C41/06 ,  C07C41/08 ,  C07C41/54 ,  C07C43/15 ,  C07C43/303 ,  C07C67/04 ,  C07C69/145 ,  C07C69/16 ,  C07C43/30 ,  B01J21/08 ,  C07C2/02

    CPC分类号： B01J37/0203 ,  B01J23/06 ,  C07C41/06 ,  C07C41/08 ,  C07C41/54

    摘要： Compounds of the formula I and II ##STR1## where R.sup.1 is hydrogen or an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical or an acyl radical, it being possible for these radicals to carry further substituents which do not react with acetylenes or allenes, and the radicals R, independently of one another, are hydrogen or aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radicals which may be linked to one another with formation of a ring and m is 0 or 1, are prepared by an addition reaction of a compound of the formula IIIR.sup.1 OH IIIwith an acetylene or allene of the formula IV or V ##STR2## where R.sup.1 and R have the abovementioned meanings, in the gas phase at elevated temperatures in the presence of a heterogeneous, silicate-containing catalyst, by a process in which the catalyst used contains, as an active component, an X-ray amorphous zinc silicate or cadmium silicate containing from 1 to 40% by weight, calculated as oxide, of zinc or cadmium and is obtainable by applying a zinc salt or cadmium salt of an organic acidic compound which is decomposable at below 400.degree. C., to an amorphous silica and forming the catalyst at from 50 to 500.degree. C., in the presence of a hydroxyl-containing compound selected from the group consisting of water, alkanols with up to 10 carbon atoms, diols and polyols having 2 to 6 carbon atoms and 2 or 3 OH groups and carboxylic acids of 1 to 6 carbon atoms.

    摘要翻译： 式I和II的化合物，其中R 1是氢或脂族，脂环族，芳脂族，芳族或杂环基或酰基，这些基团可能携带另外不与炔或炔反应的取代基和基团 R 2彼此独立地是氢或脂族，脂环族，芳脂族，芳族或杂环基团，其可以通过形成环而彼此连接并且m为0或1，其通过将化合物 式IIIR1OHIII具有式IV或V的乙炔或二烯，其中R1和R具有上述含义，在气相中，在非均相含硅酸盐催化剂存在下，在升高的温度下，通过所用催化剂包含的方法， 作为活性成分，含有以氧化物计为1〜40重量％的锌或镉的X射线无定形硅酸锌或铯硅酸盐，可通过应用 在低于400℃下可分解的有机酸性化合物的锌锌盐或镉盐加入到无定形二氧化硅中，并在50-500℃下，在含羟基化合物存在下，在选自 具有至多10个碳原子的链烷醇，具有2至6个碳原子的二醇和多元醇以及2或3个OH基团以及1至6个碳原子的羧酸组成的组。

    Preparation of finely divided ferrite powders
    60.
    发明授权
    Preparation of finely divided ferrite powders 失效
    精细分散铁素体粉末的制备

    公开(公告)号：US4425250A

    公开(公告)日：1984-01-10

    申请号：US408598

    申请日：1982-08-16

    申请人： Hartmut Hibst

    发明人： Hartmut Hibst

    IPC分类号： C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  G11B5/706 ,  H01F1/36 ,  C04B35/26

    CPC分类号： H01F1/36 ,  C01G49/0036 ,  C01G49/0054 ,  C01G49/0072 ,  C01G49/009 ,  C01G51/00 ,  C01G51/006 ,  C01G53/00 ,  C01G53/006 ,  G11B5/70678 ,  C01P2002/32 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2004/22 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/42

    摘要： A process for the preparation of finely divided ferrites of the general formulaMeFe.sub.2 O.sub.4 (I)where Me=aMn+bNi+cZn+dCo+eFe(II), and the atomic weight ratios a, b, c, d and e are each from 0 to 1 and their sum is 1, orM.sup.1.sub.2 Me.sup.1.sub.2 Fe.sub.12 O.sub.22 (II)where M.sup.1 is barium, strontium, calcium and/or lead, and Me.sup.1 is divalent manganese, copper, iron, cobalt, nickel, zinc, magnesium and/or equimolar amounts of lithium and trivalent iron, orM.sup.2 (Me.sup.2 Ti).sub.x Fe.sub.12-2x O.sub.19 (III)where M.sup.2 is barium or strontium, Me.sup.2 is zinc, nickel and/or cobalt and x is from 0 to 2.0, wherein the salts required for the particular composition are mixed with sodium carbonate and/or potassium carbonate, the mixture obtained is heated at 700.degree. to 1200.degree. C., and the resulting ferrite is then isolated by leaching with water.

    摘要翻译： 其中Me = aMn + bNi + cZn + dCo + eFe（II）的通式MeFe 2 O 4（I）的细分散铁氧体的制备方法，原子比例a，b，c，d和e各自为 0至1，它们的和为1，或M12Me12Fe12O22（II），其中M1为钡，锶，钙和/或铅，Me1为二价锰，铜，铁，钴，镍，锌，镁和/或等摩尔量 锂和三价铁，或M2（Me2Ti）xFe12-2xO19（III），其中M2为钡或锶，Me2为锌，镍和/或钴，x为0至2.0，其中特定组合物所需的盐混合 与碳酸钠和/或碳酸钾混合，将所得混合物在700〜1200℃下加热，然后通过用水浸出分离得到的铁素体。