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11 条记录 (耗时 0.072 秒)

    Manufacture of tocopherol
    3.
    发明授权
    Manufacture of tocopherol 失效
    生育酚生产

    公开(公告)号：US4191692A

    公开(公告)日：1980-03-04

    申请号：US896479

    申请日：1978-04-14

    申请人： Paul Grafen ,  Henning Kroesche ,  Bernhard Schulz ,  Joachim Paust ,  Sigberg Pfohl

    发明人： Paul Grafen ,  Henning Kroesche ,  Bernhard Schulz ,  Joachim Paust ,  Sigberg Pfohl

    IPC分类号： C07D311/72

    CPC分类号： C07D311/72

    摘要： In the manufacture of tocopherol (vitamin E) by reaction of isophytol with trimethylhydroquinone in the presence of zinc chloride and acid in a hydrocarbon solvent one of the starting compounds, isophytol, is pretreated with small amounts of ammonia or an amine.Tocopherol is obtained in higher yield and purity.

    摘要翻译： 在氯化锌和酸在烃溶剂存在下，通过异山梨醇与三甲基对苯二酚的反应制造生育酚（维生素E），其中一种起始化合物异山梨醇，用少量的氨或胺进行预处理。 以更高的产率和纯度获得生育酚。

    Liquid black dye mixture
    4.
    发明授权
    Liquid black dye mixture 失效
    液体黑色染料混合物

    公开(公告)号：US4804387A

    公开(公告)日：1989-02-14

    申请号：US126259

    申请日：1987-11-27

    申请人： Hans-Juergen Degen ,  Rudolf Bermes ,  Sigberg Pfohl

    发明人： Hans-Juergen Degen ,  Rudolf Bermes ,  Sigberg Pfohl

    IPC分类号： C09B67/22 ,  C09B67/26 ,  C09B35/21 ,  C09B56/04 ,  C09B69/04

    CPC分类号： C09B67/0073 ,  C09B67/0041 ,  Y10S8/919

    摘要： Aqueous dye mixtures for black shades containing as dyes essentially those dyes which have the C.I. number 19,140, 40,000 or 47,035, in the form of the alkanolammonium salt, and also the dyes of the formula I, II and/or III ##STR1## where the cations R.sup.+ are each independently of the others an alkanolammonium cation, a substituted or unsubstituted ammonium cation or an alkali metal cation, and the quantities of the individual dyes are such as to produce a black, are suitable in particular for dyeing paper and leather.

    摘要翻译： 用于黑色色调的水性染料混合物，其含有染料，基本上是具有C.I. （I），（II）和/或III的染料。（I）图像（III）图像（III） 其中阳离子R +各自独立地为链烷醇铵阳离子，取代或未取代的铵阳离子或碱金属阳离子，并且单个染料的量等产生黑色，特别适用于染色纸和皮革 。

    Manufacture of paper having a high dry strength and a low wet strength
    9.
    发明授权
    Manufacture of paper having a high dry strength and a low wet strength 失效
    具有高干燥强度和低湿强度的纸张的制造

    公开(公告)号：US4294873A

    公开(公告)日：1981-10-13

    申请号：US109315

    申请日：1980-01-03

    申请人： Juergen Hartmann ,  Joachim Stedefeder ,  Walter Denzinger ,  Sigberg Pfohl

    发明人： Juergen Hartmann ,  Joachim Stedefeder ,  Walter Denzinger ,  Sigberg Pfohl

    IPC分类号： D21H19/20 ,  D21H17/43 ,  B05D3/02 ,  B32B23/08 ,  B32B27/10

    CPC分类号： D21H17/43 ,  Y10T428/31895 ,  Y10T428/31906

    摘要： A process for the manufacture of paper having a high dry strength and a low wet strength, by treating the surface of the paper with an aqueous solution of an alkali metal and/or alkaline earth metal salt of a polymer of (a) from 91 to 100% by weight of acrylic acid and/or methacrylic acid and (b) from 0 to 9% by weight of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, vinyl acetate, maleic anhydride, diisobutylene, an ester of acrylic acid and/or an ester of methacrylic acid, which has a viscosity of from 5 to 100 mPas in 2% strength aqueous solution at 20.degree. C., and drying the impregnated paper. The polymer is generally employed in an amount of from 1 to 4% by weight, based on dry paper, and increases the dry strength of the paper without substantially increasing the wet strength.

    摘要翻译： 通过用（a）91的聚合物的碱金属和/或碱土金属盐的水溶液处理纸的表面来制造具有高干燥强度和低湿强度的纸的方法， 丙烯酸和/或甲基丙烯酸的100重量％和（b）0-9重量％的丙烯腈，甲基丙烯腈，丙烯酰胺，甲基丙烯酰胺，乙酸乙烯酯，马来酸酐，二异丁烯，丙烯酸和/或酯的酯 的甲基丙烯酸，其在20℃的2％强度水溶液中具有5至100mPas的粘度，并干燥浸渍的纸。 聚合物通常以基于干纸的1至4重量％的量使用，并且增加纸的干强度而基本上不增加湿强度。