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88 条记录 (耗时 0.022 秒)

    Acetaldehyde derivatives, their preparation process and their use
    1.
    发明授权
    Acetaldehyde derivatives, their preparation process and their use 失效
    乙醛衍生物，其制备方法及其用途

    公开(公告)号：US5600001A

    公开(公告)日：1997-02-04

    申请号：US605792

    申请日：1996-02-22

    申请人： Alain Schouteeten ,  Yani Christidis

    发明人： Alain Schouteeten ,  Yani Christidis

    IPC分类号： C07C249/02 ,  C07C213/02 ,  C07C217/40 ,  C07C251/88 ,  C07C209/42 ,  C07C209/00

    CPC分类号： C07C213/02 ,  C07C217/40 ,  C07C251/88

    摘要： Azines of formula (I): ##STR1## in which R and R' either are identical and represent an alkyl radical containing 1 to 4 carbon atoms or an alkenyl radical containing 3 to 5 carbon atoms, or together form a radical of formula (II):--CHR.sub.1 --(CR.sub.2 R.sub.3).sub.n --CHR.sub.4 -- (II)in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, identical or different, represent a hydrogen atom or an alkyl radical containing 1 to 4 carbon atoms and n represents 0 or 1, in their different stereoisomer forms, their preparation process and their use.

    摘要翻译： 式（I）的吖嗪：其中R和R'相同并且表示含有1至4个碳原子的烷基或含有3至5个碳原子的烯基，或一起形成基团 式（II）：-CHR1-（CR 2 R 3）n -CHR 4 - （II）其中R 1，R 2，R 3和R 4相同或不同表示氢原子或含有1至4个碳原子的烷基，n表示0 或1，以其不同的立体异构体形式，其制备方法及其用途。

    Transvinylation of carboxylic acids
    5.
    发明授权
    Transvinylation of carboxylic acids 失效
    羧酸的转化

    公开(公告)号：US5223621A

    公开(公告)日：1993-06-29

    申请号：US817194

    申请日：1992-01-06

    申请人： Jean-Claude Vallejos ,  Yani Christidis

    发明人： Jean-Claude Vallejos ,  Yani Christidis

    IPC分类号： C07C67/10

    CPC分类号： C07C67/10

    摘要： Transvinylation process between vinyl acetate or vinyl propionate and a carboxylic acid of general formula (I),RCOOH (I)in which R represents a substituted or non-substituted alkyl, cycloalkyl, aralkyl or aromatic radical, in the presence of a palladium catalyst, in which the catalyst is obtained in situ, by reacting, in the reaction medium, a derivative of palladium chosen from the group constituted by palladium II acetate, nitrate or hydroxide and palladium deposited on charcoal, with a tertiary amine chosen from the group constituted by 2,2'-bipyridyl, orthophenanthroline or tetramethylethylenediamine, that the quantity of palladium used, expressed in gram-atom of palladium II per 100 moles of carboxylic acid of general formula (I) is between 0.005 and 1 and that the quantity of amine is greater than 1 and less than 10 moles per gram-atom of palladium II used and use for the preparation of certain products.

    摘要翻译： 乙酸乙烯酯或丙酸乙烯酯与通式（I）的羧酸，其中R表示取代或未取代的烷基，环烷基，芳烷基或芳族基团的RCOOH（I）在钯催化剂存在下的反应， 其中通过在反应介质中使选自由钯II乙酸酯，硝酸盐或氢氧化物构成的组的钯衍生物和沉积在活性炭上的钯与选自以下组成的组中的叔胺反应获得催化剂： 2,2'-联吡啶基，邻菲咯啉或四甲基乙二胺，使用的钯的量（以每100摩尔通式（I）的羧酸计）钯II的克原子数为0.005〜1，胺的量为 大于1且小于10摩尔/克原子的钯II，并用于制备某些产品。

    Coating process for papers and cardboards and its use for obtaining paper which has a good smoothness
    6.
    发明授权
    Coating process for papers and cardboards and its use for obtaining paper which has a good smoothness 失效
    纸张和卡片的涂装工艺及其用于获得良好平滑性的纸张的使用

    公开(公告)号：US5219619A

    公开(公告)日：1993-06-15

    申请号：US840492

    申请日：1992-02-24

    申请人： Claude Trouve ,  Michel Richard ,  Jean Cabestany

    发明人： Claude Trouve ,  Michel Richard ,  Jean Cabestany

    IPC分类号： D21H19/20 ,  D21H19/58

    CPC分类号： D21H19/58 ,  Y10T428/31895

    摘要： Coating process for papers and cardboards, in which cross-linked polymers insoluble in water, containing in molar proportions in the polymerized state:50 to 99.995% acrylic acid at least 70% of which is in the form of ammonium acrylate,0.005 to 0.5% bisacrylamidoacetic acid which has about the same neutralization ratio as acrylic acid and,the complement to 100% with acrylamide, are used as coating agent, and use in paper coating.

    摘要翻译： 纸张和纸板的涂布方法，其中不溶于水的交联聚合物以聚合态的摩尔比含有：其中至少70％为丙烯酸铵的至少70％的丙烯酸为0.005至0.5％ 双丙烯酰氨基乙酸与丙烯酸具有大致相同的中和比例，与丙烯酰胺的补充剂为100％，用作涂布剂，用于纸张涂布。

    Preparation process for piperonal
    8.
    发明授权
    Preparation process for piperonal 失效
    PIPERONAL的制备工艺

    公开(公告)号：US5095128A

    公开(公告)日：1992-03-10

    申请号：US608450

    申请日：1990-11-02

    申请人： Christian Sidot ,  Yani Christidis

    发明人： Christian Sidot ,  Yani Christidis

    IPC分类号： C07D317/54

    CPC分类号： C07D317/54

    摘要： Preparation process for piperonal by decarboxylating oxidation of 3,4-methylenedioxy mandelic acid by nitric acid in aqueous medium in the presence of hydrochloric acid.

    摘要翻译： 在盐酸存在下，通过硝酸在水介质中脱羧氧化3,4-亚甲二氧基扁桃酸，制备胡椒醌的制备方法。

    Process for the manufacture of alkyl pyruvates
    9.
    发明授权
    Process for the manufacture of alkyl pyruvates 失效
    制备亚苄基吡咯烷酮的方法

    公开(公告)号：US5053527A

    公开(公告)日：1991-10-01

    申请号：US525209

    申请日：1990-05-18

    申请人： Yani Christidis ,  Jean-Claude Vallejos

    发明人： Yani Christidis ,  Jean-Claude Vallejos

    IPC分类号： B01J27/06 ,  C07B61/00 ,  C07C67/313 ,  C07C69/716

    CPC分类号： C07C67/313 ,  C07C69/716

    摘要： The invention provides an improved process for the manufacture of alkyl pyruvates having general formula (I):CH.sub.3 --CO--COOR (I)where R represents a C.sub.1 to C.sub.8 alkyl radical, by controlled oxidation of the corresponding alkyl lactate.The process is characterized in that the controlled oxidation is carried out using an aqueous hydrogen peroxide solution in the presence of catalytic quantities of bromium.

    摘要翻译： 本发明提供了制备具有通式（I）的烷基丙酮酸盐的改进方法：其中R表示C1至C8烷基的CH3-CO-COOR（Ⅰ）通过相应的乳酸烷基酯的受控氧化。 该方法的特征在于，在催化量的溴的存在下，使用过氧化氢水溶液进行受控氧化。