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25 条记录 (耗时 0.032 秒)

    Process for preparing a sulfonated dispersant from petroleum asphalt fractions
    21.
    发明授权
    Process for preparing a sulfonated dispersant from petroleum asphalt fractions 失效
    从石油沥青馏分制备磺化分散剂的方法

    公开(公告)号：US5322556A

    公开(公告)日：1994-06-21

    申请号：US28728

    申请日：1993-03-08

    申请人： Aldo Prevedello ,  Edoardo Platone ,  Elio Donati

    发明人： Aldo Prevedello ,  Edoardo Platone ,  Elio Donati

    IPC分类号： C07C303/32 ,  B01F17/00 ,  B01F17/08 ,  C07C303/06 ,  C07C309/62 ,  C10L1/32 ,  C10L10/18 ,  C09D195/00 ,  C09C1/28 ,  C09C1/44 ,  C09D1/08

    CPC分类号： B01F17/0057 ,  C07C303/06 ,  Y10S516/03 ,  Y10S516/909

    摘要： A process for preparing a sulfonated dispersant from a petroleum asphalt fraction, comprising:establishing contact between the asphalt fraction dissolved in an inert solvent and liquid or gaseous sulfur trioxide at a temperature equal to or less than 60.degree. C., to obtain a sulfonated asphalt fraction;salifying the sulfonated asphalt fraction thus obtained by contact with an aqueous solution of a hydroxide of an alkaline metal, alkaline earth metal or ammonium and recovering the sulfonated salt from the reaction mixture.This process provides water-soluble sulfonated salts of petroleum asphalt fractions, which can be used as fluidifying and stabilizing agents for aqueous dispersions of solids, such as aqueous dispersions of coal or cement.

    摘要翻译： 一种从石油沥青馏分制备磺化分散剂的方法，包括：在等于或低于60℃的温度下，将溶解在惰性溶剂中的沥青级分与液态或气态三氧化硫之间建立接触，得到磺化沥青 分数; 通过与碱金属，碱土金属或铵的氢氧化物的水溶液接触而使由此获得的磺化沥青馏分成盐，并从反应混合物回收磺化盐。 该方法提供石油沥青馏分的水溶性磺化盐，其可用作固体的水分散体的流化和稳定剂，例如煤或水泥的水分散体。

    Process for purifying paraffin sulphonic acids
    22.
    发明授权
    Process for purifying paraffin sulphonic acids 失效
    净化红豆杉皂苷的方法

    公开(公告)号：US5171448A

    公开(公告)日：1992-12-15

    申请号：US619887

    申请日：1990-11-28

    申请人： Calogero Genova ,  Irena Blute ,  Edoardo Platone

    发明人： Calogero Genova ,  Irena Blute ,  Edoardo Platone

    IPC分类号： C07C303/42 ,  C07C303/44 ,  C07C303/46 ,  C07C309/03 ,  C07C309/04 ,  C11D3/34

    CPC分类号： C07C303/44

    摘要： A process for separating and recovering paraffin sulphonic acids from mixtures with water and sulphuric acid is described, consisting of: bringing such a mixture into contact under extraction conditions with a saturated aliphatic or cycloaliphatic liquid hydrocarbon; separating an aqueous liquid phase containing sulphuric acid from an organic liquid phase consisting of the extraction solvent containing the paraffin sulphonic acids; and recovering the paraffin sulphonic acids from said organic liquid phase. The process is particularly applicable to products obtained from processes involving the sulphoxidation of paraffins with sulphur dioxide and oxygen, catalyzed by U.V. radiation.

    Cyanomethyl substituted tetrahydropyrans useful as fragrances for detergents
    24.
    发明授权
    Cyanomethyl substituted tetrahydropyrans useful as fragrances for detergents 失效
    氰基甲基取代的四氢吡喃可用作洗涤剂的香料

    公开(公告)号：US4150037A

    公开(公告)日：1979-04-17

    申请号：US918445

    申请日：1978-06-23

    申请人： Aldo Prevedello ,  Maurizio Brunelli ,  Edoardo Platone

    发明人： Aldo Prevedello ,  Maurizio Brunelli ,  Edoardo Platone

    IPC分类号： C07D307/16 ,  C07D309/04

    CPC分类号： C07D307/16 ,  C07D309/04

    摘要： In the cyclization of gamma-delta or delta-epsilon unsaturated alcohols in order to obtain certain tetrahydrofuran and tetrahydropyran derivatives which are useful in the perfuming of detergents, the improvement consisting in that the alcohol to be cyclized is reacted with a cationic ion-exchange resin. The useful temperature range is from 20.degree. C. to 150.degree. C.: in practice the alcohol and the resinare boiled together or refluxed until the reaction is completed. A number of examples is reported and physicochemical data are given.

    摘要翻译： 在γ-δ或δ-ε不饱和醇的环化中，为了获得可用于加香洗涤剂的某些四氢呋喃和四氢吡喃衍生物，改进之处在于将要环化的醇与阳离子离子交换树脂 。 有用的温度范围为20℃至150℃。实际上，将醇和树脂一起煮沸或回流至反应完成。 报道了一些实例并给出了物理化学数据。