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12 条记录 (耗时 0.019 秒)

    Hydrogenation catalysts, method for making same and use thereof for preparing hydrogen peroxide
    1.
    发明授权
    Hydrogenation catalysts, method for making same and use thereof for preparing hydrogen peroxide 失效
    氢化催化剂，其制备方法及其制备过氧化氢的用途

    公开(公告)号：US06306359B1

    公开(公告)日：2001-10-23

    申请号：US09269877

    申请日：1999-06-22

    申请人： Véronique Mathieu ,  Pascal Pennetreau ,  Noel Vanlautem

    发明人： Véronique Mathieu ,  Pascal Pennetreau ,  Noel Vanlautem

    IPC分类号： C01C1501

    CPC分类号： B01J23/48 ,  B01J23/89 ,  B01J37/0205

    摘要： Hydrogenation catalysts based on palladium, platinum or rhodium comprising at least one other metal M which are deposited on zirconium oxide and silicon oxide supports. Process for the manufacture of these catalysts by successive impregnation of the support using palladium, platinum or rhodium and using another metal M. Use of these catalysts in hydrogenation reactions and in particular in preparing hydrogen peroxide.

    摘要翻译： 基于钯，铂或铑的氢化催化剂，其包含沉积在氧化锆和氧化硅载体上的至少一种其它金属M。 通过使用钯，铂或铑并使用另一种金属M连续浸渍载体来制造这些催化剂的方法。这些催化剂在氢化反应中的用途，特别是在制备过氧化氢中。

    Process for depolymerizing hydroxycarboxylic polymers
    3.
    发明授权
    Process for depolymerizing hydroxycarboxylic polymers 失效
    解聚羟基羧酸聚合物的方法

    公开(公告)号：US4145526A

    公开(公告)日：1979-03-20

    申请号：US868467

    申请日：1978-01-09

    申请人： Noel Vanlautem ,  Jacques Gilain

    发明人： Noel Vanlautem ,  Jacques Gilain

    IPC分类号： C08F8/00 ,  C08F8/50

    CPC分类号： C08F8/50 ,  Y10S264/51 ,  Y10S526/933

    摘要： Process for obtaining hydroxycarboxylic polymers of reduced molecular weight from corresponding polymers of higher molecular weight, comprising heating the polymer of higher molecular weight in a gaseous medium to a temperature of between 60.degree. and 240.degree. C.

    摘要翻译： 从具有较高分子量的相应聚合物获得具有降低分子量的羟基羧酸聚合物的方法，包括将气态介质中较高分子量的聚合物加热至60℃至240℃之间的温度。

    Process for the manufacture of salts of poly-alpha-hydroxyacrylic acids
    5.
    发明授权
    Process for the manufacture of salts of poly-alpha-hydroxyacrylic acids 失效
    制备聚-α-羟基丙烯酸盐的方法

    公开(公告)号：US4182806A

    公开(公告)日：1980-01-08

    申请号：US897647

    申请日：1978-04-18

    申请人： Noel Vanlautem ,  Julien Mulders

    发明人： Noel Vanlautem ,  Julien Mulders

    IPC分类号： C08F8/00 ,  C08F8/44 ,  C11D3/37 ,  C08F8/06

    CPC分类号： C08F8/44

    摘要： Process for the manufacture of a salt of a poly-alpha-hydroxyacrylic acid, which salt contains monomeric units of the formula: ##STR1## in which R.sub.1 and R.sub.2 independently represent hydrogen or an alkyl group containing from 1 to 3 carbon atoms, and in which M represents the cationic radical resulting from the dissociation of a base, by reacting, with the base, in the presence of water, a solid polylactone derived from the corresponding poly-alpha-hydroxyacrylic acid, in which process the reaction is carried out in a liquid medium containing water and a diluent, the diluent being one which does not dissolve the polylactone and the salt produced and being present in an amount such that the polylactone and salt produced do not dissolve in the medium. In the process, an oxidizing agent is added to the liquid medium.

    摘要翻译： 制备聚-α-羟基丙烯酸盐的方法，该盐含有下式的单体单元：其中R 1和R 2独立地表示氢或含有1至3个碳原子的烷基，并且在 其中M表示由碱解离产生的阳离子基团，通过在水存在下与碱反应衍生自相应的聚-α-羟基丙烯酸的固体聚内酯，其中该反应在 含有水和稀释剂的液体介质，稀释剂是不溶解聚内酯和所生成的盐的稀释剂，其量使得所产生的聚内酯和盐不溶于介质中。 在此过程中，向液体介质中加入氧化剂。

    Process for the manufacture of salts of poly-alpha-hydroxyacrylic acids
    8.
    发明授权
    Process for the manufacture of salts of poly-alpha-hydroxyacrylic acids 失效
    制备聚-α-羟基丙烯酸盐的方法

    公开(公告)号：US3994969A

    公开(公告)日：1976-11-30

    申请号：US571006

    申请日：1975-04-23

    申请人： Noel Vanlautem ,  Julien Mulders

    发明人： Noel Vanlautem ,  Julien Mulders

    IPC分类号： C08F8/00 ,  C08F8/12 ,  C08F8/44 ,  C07C59/17

    CPC分类号： C08F8/44

    摘要： A process is provided for the manufacture of salts of poly-alpha-hydroxyacrylic acids, which salts contain monomeric units of the formula ##EQU1## wherein R.sub.1 and R.sub.2 independently represent hydrogen or an alkyl group containing 1 to 3 carbon atoms and wherein M represents a cationic radical resulting from the dissociation of a base. A solid polylactone derived from the corresponding poly-alpha-hydroxyacrylic acid is reacted with the base in the presence of water and the reaction is carried out in a liquid medium containing a diluent so that the polyacetone and the salt produced do not dissolve in the medium.

    摘要翻译： 提供了一种制备聚-α-羟基丙烯酸盐的方法，该盐含有式R1OH || - CC --- || R2COOM的单体单元，其中R1和R2独立地表示氢或含1个 至3个碳原子，并且其中M表示由碱解离产生的阳离子基团。 衍生自相应的聚-α-羟基丙烯酸的固体聚内酯在水存在下与碱反应，反应在含有稀释剂的液体介质中进行，使得所生产的聚丙二醇和所生成的盐不溶于介质 。