中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

101 records (took 0.022 seconds)

    Method of oxidizing secondary alkyl substituted naphtalenes and a process of producing isopropylnaphthols
    34.
    发明授权
    Method of oxidizing secondary alkyl substituted naphtalenes and a process of producing isopropylnaphthols 失效
    氧化仲烷基取代萘的方法和生产异丙基萘酚的方法

    公开(公告)号：US4906790A

    公开(公告)日：1990-03-06

    申请号：US242163

    申请日：1988-09-09

    Applicant: Masaharu Ishiguro ,  Hisaya Miki ,  Nobuya Hirokane

    Inventor： Masaharu Ishiguro ,  Hisaya Miki ,  Nobuya Hirokane

    IPC: C07C37/08 ,  C07C39/14 ,  C07C409/08 ,  C07C409/12

    CPC classification number: C07C37/08 ,  C07C409/12

    Abstract: A method of oxidizing secondary alkyl substituted naphthalenes with molecular oxygen in a liquid phase to hydroperoxides, carbinols or mixtures of these, which comprises: oxidizing the secondary alkyl substituted naphthalenes in the presence of an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein in amounts of not more than about 1000 ppm based on the secondary alkyl substituted napththalene used.A process of producing isopropylnaphthols is also disclosed, which comprises: oxidizing diisopropylnaphthalenes with molecular oxygen in a liquid phase to diisopropylnaphthalene monohydroperoxides in the presence of (a) either an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein, or a paladium catalyst soluble in the reaction mixture, and (b) an organic polar compound such as acetonitrile; and then acid-decomposing the diisopropylnaphthalene monohydroperoxide to the isopropylnaphthol.

    Process for the preparation of araliphatic dihydroperoxides
    37.
    发明授权
    Process for the preparation of araliphatic dihydroperoxides 失效
    制备芳族二氢过氧化物的方法

    公开(公告)号：US4271321A

    公开(公告)日：1981-06-02

    申请号：US82661

    申请日：1979-10-09

    Applicant: Heinz W. Voges

    Inventor： Heinz W. Voges

    IPC: C07C407/00 ,  C07C67/00 ,  C07C409/08 ,  C07C409/12 ,  C07C409/16 ,  C07C179/047

    CPC classification number: C07C409/12 ,  C07C407/00 ,  C07C407/003 ,  Y02P20/582

    Abstract: Process for the preparation of araliphatic dihydroperoxides which comprises oxidizing a hydrocarbon of the formula: ##STR1## with oxygen or an oxygen-containing gas, (2) extracting the resulting dihydroperoxide with an alkali metal hydroxide solution of a concentration of 1-12% thereby producing an aqueous extract and an organic raffinate, (3) neutralizing any alkali metal hydroxide remaining in the organic raffinate with carbon dioxide, thereby producing alkali metal carbonate or bicarbonate in the raffinate, (4) washing the alkali metal carbonate or bicarbonate remaining in the raffinate with wash-water, (5) extracting from the wash-water used in step (4) any dissolved hydroperoxides remaining therein with a hydrocarbon solvent, and (6) optionally recycling the hydroperoxide-containing hydrocarbon solvent into the process. The resulting wash-water effluent is free of polluting and contaminating materials.

    Abstract translation: 制备芳脂族二氢过氧化物的方法，其包括用氧或含氧气体氧化下式的烃：（2）用浓度为1-12％的碱金属氢氧化物溶液萃取所得的二氢过氧化物，由此 生产水提取物和有机萃余液，（3）用二氧化碳中和残留在有机萃余液中的任何碱金属氢氧化物，从而在萃余液中制备碱金属碳酸盐或碳酸氢盐，（4）洗涤剩余的碱金属碳酸盐或碳酸氢盐 使用洗涤水的残液，（5）从步骤（4）中使用的洗涤水中提取残留在其中的烃溶剂的任何溶解的氢过氧化物，和（6）任选将含氢过氧化物的烃溶剂再循环到该方法中。 得到的洗涤水流出物没有污染和污染的物质。

    Hydroperoxyisopropylphenyl carbonates
    38.
    发明授权
    Hydroperoxyisopropylphenyl carbonates 失效
    氢过氧化异丙基苯基碳酸酯

    公开(公告)号：US4202833A

    公开(公告)日：1980-05-13

    申请号：US38133

    申请日：1979-05-11

    Applicant: Sheng-Hong A. Dai

    Inventor： Sheng-Hong A. Dai

    IPC: C07C409/08 ,  C07C409/12 ,  C07C69/00

    CPC classification number: C07C409/08 ,  C07C407/00 ,  C07C409/12

    Abstract: Isopropylphenyl esters are converted to di- or trihydric phenols via a novel autoxidation of the esters at high conversion rates to the corresponding hydroperoxyisopropylphenyl esters in the presence of a catalyst combination comprising at least two members selected from the group consisting of (i) a metal phthalocyanine; (ii) a di-tertiary alkyl peroxide; and (iii) a tertiary alkyl hydroperoxide.Rearrangement of the hydroperoxyisopropylphenyl esters to the corresponding hydroxyphenyl esters and the hydrolysis of the latter compounds provides the phenols in overall yields (from the starting esters) heretofore not obtainable. Novel bis(hydroperoxyisopropylphenyl)carbonates are described which are attractive intermediates for the intermediate bisphenol carbonate or the final hydroquinone hydrolysis product.

    Abstract translation: 在包含至少两种选自（i）金属酞菁的组分的催化剂组合物存在下，通过将酯以高转化率的新型自氧化转化成相应的氢过氧化异丙基苯基酯，将异丙基苯基酯转化成二元或三元酚 ; （ii）二叔烷基过氧化物; 和（iii）叔烷基氢过氧化物。 氢过氧化异丙基苯基酯与相应的羟基苯基酯的重排和后者化合物的水解提供了迄今为止不可获得的总产率的苯酚（来自起始酯）。 描述了新型双（氢过氧化异丙基苯基）碳酸酯，其是中间体双酚碳酸酯或最终氢醌水解产物的有吸引力的中间体。

    Process for the preparation of polyalkylbenzene hydroperoxides
    40.
    发明授权
    Process for the preparation of polyalkylbenzene hydroperoxides 失效
    多烷基苯氢过氧化物的制备方法

    公开(公告)号：US4108907A

    公开(公告)日：1978-08-22

    申请号：US701811

    申请日：1976-07-01

    Applicant: Hans Dressler

    Inventor： Hans Dressler

    IPC: C07C409/08 ,  C07C409/12 ,  C07C179/02

    CPC classification number: C07C409/08 ,  C07C407/00 ,  C07C409/12

    Abstract: Polyalkylbenzene hydroperoxides are prepared from a homogeneous solution at increased rates in the presence of sulfolane from polyalkylbenzenes which are poorly soluble or insoluble in sulfolane by preoxidizing the polyalkylbenzene to an oxidation level of at least 10 percent and less than 55 percent. Then the sulfolane is added and a homogeneous solution is formed and oxidation is continued to produce a hydroperoxide product at increased rates and to excellent conversions.

    Abstract translation: 聚环烷基苯氢过氧化物在环丁砜存在下以均匀溶液的形式从多烷基苯中制备，所述多烷基苯通过将多烷基苯预氧化至至少10％且小于55％的氧化水平，其难溶于或不溶于环丁砜。 然后加入环丁砜，形成均匀的溶液，继续氧化，以增加的速率产生氢过氧化物产物，并产生优异的转化率。

Patent Agency Ranking