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24 条记录 (耗时 0.031 秒)

    Polybetaine stabilized platinum nanoparticles, method for the production thereof and utilization for fuel-cell catalysts
    2.
    发明授权
    Polybetaine stabilized platinum nanoparticles, method for the production thereof and utilization for fuel-cell catalysts 失效
    聚甜菜碱稳定的铂纳米粒子，其生产方法和燃料电池催化剂的利用

    公开(公告)号：US06391818B1

    公开(公告)日：2002-05-21

    申请号：US09555980

    申请日：2000-08-31

    申请人： Harald Bönsel ,  Gregor Deckers ,  Georg Frank ,  Hans Millauer ,  Thomas Soczka-Guth

    发明人： Harald Bönsel ,  Gregor Deckers ,  Georg Frank ,  Hans Millauer ,  Thomas Soczka-Guth

    IPC分类号： B01J3106

    CPC分类号： C25C5/02 ,  B01J35/0013 ,  B82Y30/00 ,  H01M4/92 ,  H01M4/926 ,  H01M2300/0082

    摘要： Polybetaine-stabilized nanosize platinum particles, a process for preparing them and their use for electrocatalysts in fuel cells Soluble nanosize particles which have a diameter of from 0.5 to 3 nm, preferably from 1 to 2 nm, comprise platinum alone or platinum and other metals of the platinum group and are embedded in a protective colloid which comprises polymeric betaines and can be degraded by hydrolysis. The betaine is preferably a carbobetaine of the formula —N+R1R2—(—CH2—)n—CO2−, a phosphobetaine of the formula —N+R1R2—(—CH2—)n—PO3— or, preferably, a sulfobetaine of the formula —N+R1R2—(—CH2—)n—SO3—, where R1 and R2 may, independently of one another, be identical or different and are alkyl radicals having from 1 to 6 carbon atoms and n is 1, 2 or 3. Also described are a process for preparing the nanosize particles and catalysts produced therefrom and also their use for fuel cells.

    摘要翻译： 聚甜菜碱稳定的纳米尺寸铂颗粒，其制备方法及其在燃料电池中的电催化剂的用途直径为0.5至3nm，优选1至2nm的可溶性纳米尺寸颗粒包含单独的铂或铂和其它金属 铂基团，并且嵌入包含聚合甜菜碱的保护胶体中，并且可以通过水解而降解。 甜菜碱优选为式-N + R1R2 - （ - CH2-）n-CO2-，式-N + R1R2 - （ - CH2-）n-PO3-的磷酸甜菜碱的碳甜蛋白，或优选为 式-N + R1R2 - （ - CH2-）n-SO3-，其中R1和R2可以彼此独立地相同或不同，并且是具有1至6个碳原子的烷基，n是1,2或 还描述了制备纳米尺寸颗粒和由其制备的催化剂的方法，以及它们在燃料电池中的用途。

    Process for preparing 4,4'-dimethyl-1,1'-binaphthyl
    3.
    发明授权
    Process for preparing 4,4'-dimethyl-1,1'-binaphthyl 失效
    制备4,4'-二甲基-1,1'-联萘的方法

    公开(公告)号：US5522982A

    公开(公告)日：1996-06-04

    申请号：US411475

    申请日：1995-03-28

    申请人： Stephan Brietzke ,  Hans Millauer

    发明人： Stephan Brietzke ,  Hans Millauer

    IPC分类号： C07C2/80 ,  B01J19/00 ,  C07C2/82 ,  C07C15/24 ,  C25B3/02 ,  C25B3/10

    CPC分类号： C25B3/10 ,  C07C2/82

    摘要： The invention relates to a process for preparing 4,4'-dimethyl-1,1'-binaphthyl, by electrochemically oxidatively dimerizing 1-methylnaphthalene in the presence of acetonitrile/water/conducting salt mixtures which additionally contain at least one further component which is immiscible or only partially miscible with water.

    摘要翻译： 本发明涉及一种通过在乙腈/水/导电盐混合物存在下电化学氧化二甲基1-甲基萘来制备4,4'-二甲基-1,1'-联萘的方法，该混合物另外含有至少一种另外的组分， 不混溶或仅与水部分混溶。

    Process for preparing perfluoropolyethers
    4.
    发明授权
    Process for preparing perfluoropolyethers 失效
    制备全氟聚醚的方法

    公开(公告)号：US5468352A

    公开(公告)日：1995-11-21

    申请号：US389062

    申请日：1995-02-14

    申请人： Gerhard Jager ,  Hans Millauer

    发明人： Gerhard Jager ,  Hans Millauer

    IPC分类号： C07C41/30 ,  C07C43/12 ,  C25B3/10 ,  C25B3/08

    CPC分类号： C25B3/10 ,  C07C43/126

    摘要： Perfluoropolyethers of the formula ##STR1## in which x and y are an integer from 1 to 4, can be obtained by electrolytic decarboxylation of perfluorocarboxylic acid of the formula ##STR2## in which x is an integer from 1 to 4. The electrolytic decarboxylation is carried out in an aqueous electrolyte fluid in the presence of aliphatic nitrile having an alkyl radical of from 1 to 6 carbon atoms.

    摘要翻译： 其中x和y为1至4的整数的式“IMAGE”的全氟聚醚可以通过电解脱羧通式为“IMAGE”的全氟羧酸得到，其中x为1至4的整数。电解脱羧是 在具有1至6个碳原子的烷基的脂族腈存在下，在含水电解液中进行。

    P-Benzoquinone diketals
    5.
    发明授权
    P-Benzoquinone diketals 失效
    对苯二酚二酮

    公开(公告)号：US4082809A

    公开(公告)日：1978-04-04

    申请号：US788808

    申请日：1977-04-19

    申请人： Rudolf Pistorius ,  Hans Millauer

    发明人： Rudolf Pistorius ,  Hans Millauer

    IPC分类号： C25B3/02 ,  C07C41/00

    CPC分类号： C25B3/02

    摘要： P-Benzoquinone diketals of the formula ##STR1## wherein R is an alkyl group having from 1 to 4 carbon atoms or a halogen atom, preferably CH.sub.3, Cl or F. The diketals obtained may be converted into the corresponding p-quinones by acidic hydrolysis and are, consequently, valuable intermediates for the preparation of the latters as well as for the transformation into the corresponding hydroquinones, which in their turn may be used in known manner in photography, as stabilizers for monomers, as starting material for dyestuff preparation etc.

    Process for preparing p-benzoquinone diketals
    6.
    发明授权
    Process for preparing p-benzoquinone diketals 失效
    制备对苯醌二酮的方法

    公开(公告)号：US4046652A

    公开(公告)日：1977-09-06

    申请号：US642397

    申请日：1975-12-19

    申请人： Rudolf Pistorius ,  Hans Millauer

    发明人： Rudolf Pistorius ,  Hans Millauer

    IPC分类号： C07C43/32 ,  C07C41/00 ,  C07C67/00 ,  C25B3/02 ,  C25B3/10

    CPC分类号： C25B3/02

    摘要： P-Benzoquinone diketals of the formula ##STR1## wherein R is H, an alkyl group having from 1 to 4 carbon atoms or a halogen atom, preferably H, CH.sub.3, Cl or F,are prepared by anodic oxidation of benzene or alkoxybenzenes of the formula ##STR2## wherein R has the aforesaid meaning and R.sup.1 is an alkyl radical having of from 1 to 4 carbon atomsIn CH.sub.3 OH containingA. less than about 5% by weight of H.sub.2 O as well asB. about 0.2 to 15% by weight, calculated on the electrolyte, of at least a conducting salt selected from the group of ammonium and alkali fluorides, perchlorates, nitrates, tetrafluoroborates, hexafluorosilicates, hexafluorophosphates, benzene sulfonates, p-toluene sulfonates, quartenary ammonium and phosphonium fluorides as well as methylsulfates and additionallyC. optionally about 0.5 to 10% by weight, calculated on the electrolyte, of a base to be oxidized with difficulty, preferably 2,6-lutidine,At a known anode made of a conventinal material, at a temperature of from about -20.degree. to +60.degree. C. When using as starting material an alkoxybenzene wherein the group OR.sup.1 contains an alkyl radical having of from 2 to 4 carbon atoms, the resultant p-benzoquinone tetramethyl diketal contains a small quantity of the corresponding trimethyl alkyl diketal having an alkyl group of from 2 to 4 carbon atoms in the alkoxy group. The diketals obtained may be converted into the corresponding p-quinones by acidic hydrolysis and are, consequently, valuable intermediates for the preparation of the latter as well as for the transformation into the corresponding hydroquinones, which in their turn may be used in known manner in photography, as stabilizers for monomers, as starting material for dyestuff preparation etc.

    摘要翻译： 其中R为H，具有1至4个碳原子的烷基或卤原子，优选H，CH 3，Cl或F的式“IMAGE”的对苯醌醌二缩酮通过阳离子氧化苯或烷氧基苯来制备 其中R具有上述含义，R 1是具有1至4个碳原子的烷基，在含有A的CH 3 OH中。通过H 2 O以及B的重量减少约5％。关于0.2至15％BY 重量的计算方法在电解质，至少导电盐选自铵集团和碱氟化物，氯酸盐，硝酸盐，四氟硼酸，六氟硅酸盐，六氟磷酸，苯磺酸盐，对甲苯磺酸盐，四元铵和磷氟化物以及甲基硫酸盐 另外，可选择约0.5至10％的重量，计算在电解液上，要以氧化铝为原料，优先选择2,6-LuTIDINE，以一种已知的阳极材料制成的阳极材料，温度范围从 - 20℃〜+ 60℃。当使用烷基苯（其中基团OR1含有具有2-4个碳原子的烷基）的原料时，得到的对苯醌四甲基二缩酮含有少量相应的三甲基烷基二缩酮，其具有 烷氧基中的2至4个碳原子的烷基。 获得的二缩酮可以通过酸性水解转化成相应的对醌，因此是用于制备后者的有价值的中间体以及转化成相应的氢醌，其依次可以以已知的方式以 摄影作为单体稳定剂，作为染料制备的起始原料等。

    Process for the preparation of hexafluoropropene epoxide
    7.
    发明授权
    Process for the preparation of hexafluoropropene epoxide 失效
    制备六氟丙烯环氧化物的方法

    公开(公告)号：US4014762A

    公开(公告)日：1977-03-29

    申请号：US641930

    申请日：1975-12-18

    申请人： Hans Millauer

    发明人： Hans Millauer

    IPC分类号： C07D303/08 ,  C07D303/48 ,  C25B3/02

    CPC分类号： C07D303/48 ,  C07D303/08 ,  C25B3/02

    摘要： Hexafluoropropene epoxide ##STR1## is prepared by anodic oxidation of hexafluoropropene in an electrolytical cell which contains at least in the anode space as electrolyte a solution of the following composition: glacial acetic acid and/or acetonitrile with from 2 - 40% by volume of water and about 1 - 10 weight % -- calculated on the total solution -- of at least one alkali perchlorate, -hexafluorosilicate, -tetrafluoroborate, -hexafluorophosphate or -nitrate and/or of at least one of the free acids on which these salts are based as compounds emphasizing the conductance. The anode consists of a metal of the platinum group of the periodical table or of an alloy of these metals or of PbO.sub.2, the cathode consisting of one of the usual metals or of graphite. If cathode space and anode space are separated, catholyte and anolyte are either of the same kind or the catholyte is one of the usual electrolytes. The cell temperature should range from about -30 to +50.degree. C. Hexafluoropropene epoxide is employed for preparing polymers which are especially important as inert liquids, lubricant liquids and hydraulic liquids.

    摘要翻译： 六氟丙烯环氧化物通过在电解槽中阳极氧化六氟丙烯来制备，其至少在阳极空间中作为电解液含有以下组成的溶液：冰醋酸和/或乙腈与2-40体积％的水 和至少一种碱式高氯酸盐，六氟硅酸盐，四氟硼酸盐，六氟磷酸盐或硝酸盐和/或至少一种这些盐所基于的游离酸的总溶液计为约1-10重量％ 强调电导的化合物。 阳极由周期表的铂族金属或这些金属或PbO 2的合金组成，阴极由通常的金属或石墨组成。 如果阴极空间和阳极空间分开，阴极电解液和阳极电解液是相同的，或者阴极电解液是通常的电解质之一。 电池温度应在约-30至+50℃的范围内。六氟丙烯环氧化物用于制备作为惰性液体，润滑剂液体和液压液体尤其重要的聚合物。

    Chiral tertiary phosphines and process for their preparation
    10.
    发明授权
    Chiral tertiary phosphines and process for their preparation 失效
    手性叔膦及其制备方法

    公开(公告)号：US5808163A

    公开(公告)日：1998-09-15

    申请号：US680479

    申请日：1996-07-17

    申请人： Hans Millauer ,  Peter Brungs

    发明人： Hans Millauer ,  Peter Brungs

    IPC分类号： B01J31/24 ,  C07F9/50

    CPC分类号： C07F9/5077 ,  C07F9/5031

    摘要： The invention relates to chiral tertiary alkyldiarylphosphines of the formula (I), ##STR1## where: R.sup.1 is (C.sub.1 -C.sub.4)alkyl, which can also be substituted by F, CF.sub.3, OCH.sub.3, Ar.sup.1, Ar.sup.2 are phenyl, naphthyl, anthracenyl, which can also bear one or more substituents selected from the group consisting of (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxy, CF.sub.3, F, * designates the chiral carbon atom which can have either an (R) or an (S) configuration, and also a process for preparing these compounds.

    摘要翻译： 本发明涉及式（I）的手性叔烷基二芳基膦，其中：R 1为（C 1 -C 4）烷基，其也可被F，CF 3，OCH 3，Ar 1，Ar 2取代为苯基，萘基 （C 1 -C 4）烷基，（C 1 -C 4）烷氧基，CF 3，F 5表示可以具有（R 1）或 （S）构型，以及这些化合物的制备方法。