Method for the preparation of carbonyl compounds
    4.
    发明授权
    Method for the preparation of carbonyl compounds 失效
    羰基化合物的制备方法

    公开(公告)号:US4322561A

    公开(公告)日:1982-03-30

    申请号:US139765

    申请日:1980-04-14

    摘要: For preparing carbonyl compounds containing certain functional groups, a carbonyl compound is reacted with an unsaturated compound in the presence of a trivalent-manganese initiator and an amine. There is a positive coaction between the trivalent-Mn catalyst and the amine. Typically, 2-methyl-3-butene-2-ol is reacted with acetone in the presence of triethylamine and manganese triacetate (bihydrated) to obtain 2-methyl-heptane-2-ol-3-one. Yields and selectivities are more than satisfactory.

    摘要翻译: 为了制备含有某些官能团的羰基化合物,在三价锰引发剂和胺的存在下,羰基化合物与不饱和化合物反应。 三价锰催化剂与胺之间存在正相结合。 通常,在三乙胺和三乙酸锰(双水合)存在下,使2-甲基-3-丁烯-2-醇与丙酮反应,得到2-甲基 - 庚烷-2-醇-3-酮。 产量和选择性令人满意。

    Process for preparing alkaline metal salts of polyethoxycarboxylic acids
    5.
    发明授权
    Process for preparing alkaline metal salts of polyethoxycarboxylic acids 失效
    制备聚乙氧基羧酸的碱金属盐的方法

    公开(公告)号:US4607121A

    公开(公告)日:1986-08-19

    申请号:US682907

    申请日:1984-12-18

    摘要: A process for preparing an alkaline metal salt of a polyethoxycarboxylic acid defined by the formulaR'(OR).sub.m (OCH.sub.2 CH.sub.2).sub.n-1 (OCH.sub.2)COOMby oxidation in the presence of a platinum or palladium catalyst, of a polyethoxy alcohol of the formulaR'(OR).sub.m (OCH.sub.2 CH.sub.2).sub.n OH,followed by reactivating the catalyst in the reaction mixture and recovering in active form the insoluble and soluble catalyst fractions. The alkaline metal salts of polyethoxycarboxylic acids thus produced are useful as surfactants, which can be employed in the recovery of oil from wells of medium and high salinity.

    摘要翻译: 制备由式R'(OR)m(OCH 2 CH 2)n-1(OCH 2)COOM)定义的聚乙氧基羧酸的碱金属盐的方法,其通过在铂或钯催化剂存在下氧化, 式(R)(OR)m(OCH 2 CH 2)n OH,然后使反应混合物中的催化剂再活化并以活性形式回收不溶和可溶的催化剂级分。 如此生产的聚乙氧基羧酸的碱金属盐可用作表面活性剂,其可用于从中等盐度和高盐度的井中回收油。

    Process for synthesizing pyran nitriles
    6.
    发明授权
    Process for synthesizing pyran nitriles 失效
    吡喃腈合成方法

    公开(公告)号:US4278602A

    公开(公告)日:1981-07-14

    申请号:US94599

    申请日:1979-11-15

    IPC分类号: C07D309/04 C07D309/08

    CPC分类号: C07D309/04

    摘要: The present invention relates to a process for synthesizing pyran nitriles of the general formula ##STR1## consisting of reacting aliphatic 1,5 hydroxyketones with aliphatic nitriles in the presence of basic substances such as oxides, hydroxides, and carbonates of alkali metal and alkaline earth metals, and in particular of alkali metal hydroxides or alcoholates, as the catalyst.

    摘要翻译: 本发明涉及一种在碱性物质如碱金属和碱土金属的氧化物,氢氧化物和碳酸盐存在下,使脂族1,5-羟基酮与脂族腈反应的通式为“IMAGE”的吡喃腈的合成方法。 ,特别是碱金属氢氧化物或醇化物,作为催化剂。

    Concrete composition containing a superfluidifying additive
    10.
    发明授权
    Concrete composition containing a superfluidifying additive 失效
    含有超流化添加剂的混凝土组合物

    公开(公告)号:US5221344A

    公开(公告)日:1993-06-22

    申请号:US877835

    申请日:1992-05-01

    IPC分类号: C04B24/20 C07G99/00

    CPC分类号: C07G17/002 C04B24/20

    摘要: A concrete composition contains hydraulic cement, inerts, water and superfluidifying additive obtained by salifying, in the form of an alkaline metal, alkaline earth metal or ammonium salt, the sulphonated and oxidised products resulting from the reaction between sulphur trioxide and fuel oil deriving from steam cracking. This concrete composition has improved workability characteristics and enables concretes to be obtained generally possessing greater strength and durability.

    摘要翻译: 混凝土组合物包含水硬性水泥,惰性物质,水和超流化添加剂,其通过以碱金属,碱土金属或铵盐的形式盐化,由三氧化硫和源自蒸汽的燃料油之间的反应产生的磺化和氧化产物 开裂 这种混凝土组合物具有改进的可加工性特征,并且能够获得通常具有更大强度和耐久性的混凝土。