Method for the preparation of vitreous hollow microspheres
    51.
    发明授权
    Method for the preparation of vitreous hollow microspheres 失效
    玻璃状中空微球的制备方法

    公开(公告)号:US5614255A

    公开(公告)日:1997-03-25

    申请号:US678062

    申请日:1996-07-09

    摘要: Proposed is an efficient method for the preparation of vitreous hollow microspheres from particles of a vitreous volcanic deposit by a heat treatment to effect expansion of the particles by foaming. The inventive method comprises a step, prior to the heat treatment for expansion of the particles, in which the starting particles are dispersed in an aqueous medium containing aluminum sulfate and urea each in a specified concentration followed by a heating treatment of the dispersion so as to deposit a coating layer of aluminum hydroxide on the particle surface so that the efficiency of foaming can be greatly improved without the disadvantage of particle agglomeration.

    摘要翻译: 提出了一种通过热处理从玻璃体火山沉积物颗粒制备玻璃状中空微球的有效方法,以通过发泡来实现颗粒膨胀。 本发明的方法包括以下步骤:在用于膨胀颗粒的热处理之前,将起始颗粒分散在含有特定浓度的硫酸铝和尿素的水性介质中,然后对分散体进行加热处理,以便 在颗粒表面上沉积氢氧化铝涂层,从而可以大大提高发泡效率,而不会产生颗粒聚集的缺点。

    Method for the preparation of .beta.-thiolactam compound
    52.
    发明授权
    Method for the preparation of .beta.-thiolactam compound 失效
    β-硫代内酰胺化合物的制备方法

    公开(公告)号:US5585487A

    公开(公告)日:1996-12-17

    申请号:US613100

    申请日:1996-03-08

    CPC分类号: C07D493/04

    摘要: Disclosed is a method for the preparation of a .beta.-thiolactam compound, i.e. a 7-substituted-2-oxa-7-azabicyclo [3.2.0]-heptan-6-thione, represented by the general formula ##STR1## in which R is an alkyl or aryl group, having usefulness as an intermediate for the synthesis of various biologically active compounds. The compound can be prepared by the reaction of an isothiocyanate compound R--NCS, R being the same as above, and 2,3-dihydrofuran, preferably, under pressurization up to 2000 atmospheres or higher at an elevated temperature.

    摘要翻译: 公开了一种制备β-硫代内酰胺化合物的方法,即由通式“IMAGE”表示的7-取代-2-氧杂-7-氮杂双环[3.2.0]庚基-6-硫酮,其中R 是具有作为合成各种生物活性化合物的中间体的有用性的烷基或芳基。 该化合物可以通过异硫氰酸酯化合物R-NCS,与上述相同的R和2,3-二氢呋喃的反应制备,优选在高达2000℃或更高的加压下进行。

    Method for the preparation of a superlattice multilayered film
    53.
    发明授权
    Method for the preparation of a superlattice multilayered film 失效
    超晶格多层膜的制备方法

    公开(公告)号:US5565030A

    公开(公告)日:1996-10-15

    申请号:US401277

    申请日:1995-03-09

    CPC分类号: C30B23/02 C30B29/68

    摘要: A novel method is proposed for the preparation of a superlattice multilayered film, which has a multilayered structure alternately consisting of epitaxially grown layers of a metal and layers of a metal oxide formed on the surface of a substrate and is useful as high-speed electronic devices, soft X-ray reflectors, neutron beam polarizers and the like. According to the discovery leading to this invention, good epitaxial growth of the layers can be accomplished when the metal has a face-centered cubic lattice structure and the metal oxide has a sodium chloride-type cubic lattice structure and the difference in the lattice constant between the metal and the metal oxide is small enough as in the combinations of silver and nickel oxide or magnesium oxide and nickel and nickel oxide.

    摘要翻译: 提出了一种制备超晶格多层膜的新方法,该超晶格多层膜具有交替地由金属外延生长层和形成在基板表面上的金属氧化物层组成的多层结构,并且可用作高速电子器件 ,软X射线反射器,中子束偏振器等。 根据本发明的发现,当金属具有面心立方晶格结构并且金属氧化物具有氯化钠型立方晶格结构并且晶格常数之间的差异可以在层之间实现良好的外延生长 金属和金属氧化物足够小,如银和氧化镍或氧化镁和镍和氧化镍的组合。

    Method for bonding of a ceramic body and a metallic body
    54.
    发明授权
    Method for bonding of a ceramic body and a metallic body 失效
    陶瓷体和金属体的接合方法

    公开(公告)号:US5534103A

    公开(公告)日:1996-07-09

    申请号:US318550

    申请日:1994-10-05

    摘要: Proposed is a method for bonding of a ceramic body and a metallic body at a relatively low temperature not to cause substantial deformation or material degradation of the ceramic and metallic materials. The surface of the ceramic body is first irradiated with laser beams in vacuum so that the inorganic non-volatile constituent of the ceramic material, e.g. silicon when the ceramic is silicon nitride, is isolated on the surface of the ceramic body forming a layer. Thereafter, the metallic body is brought into contact with and pressed in vacuum against the thus laser beam-irradiated area of the ceramic body under an adequate pressing force and at an elevated but relatively low temperature which is, for example, not higher than 0.5Tm .degree.C., Tm .degree.C. being the melting point of the metallic material, so that the ceramic and metallic bodies are firmly bonded together. It is preferable that the surface of the metallic body is subjected beforehand to an activation or cleaning treatment, for example, by the bombardment with ion beams of an inert gas, e.g., argon.

    摘要翻译: 提出了一种陶瓷体和金属体在较低温度下的接合方法,不会导致陶瓷和金属材料的实质变形或材料劣化。 首先在真空中用激光束照射陶瓷体的表面,使得陶瓷材料的无机非挥发性成分,例如陶瓷材料。 当陶瓷是氮化硅时硅被隔离在陶瓷体的表面上形成一层。 此后,使金属体在适当的压力下和在例如不高于0.5Tm的升高但相对较低的温度下与真空中的陶瓷体的激光束照射区域接触并压制 ℃,Tm℃是金属材料的熔点,使得陶瓷和金属体牢固地结合在一起。 优选地,例如通过用惰性气体例如氩气的离子束进行轰击,预先对金属体的表面进行活化或清洗处理。

    Method for vascular embolization
    55.
    发明授权
    Method for vascular embolization 失效
    血栓栓塞方法

    公开(公告)号:US5525334A

    公开(公告)日:1996-06-11

    申请号:US408395

    申请日:1995-03-22

    IPC分类号: A61K31/785 A61K49/00 A61P9/00

    摘要: Proposed is a method for vascular embolization of the blood vessel of a patient by introducing an aqueous solution of a specific thermosensitive polymer, which is liquid at low temperatures but causes coagulation when heated up to the body temperature of the patient, into the blood vessel followed by in situ heating of the solution. The thermosensitive polymer found to be suitable for the purpose is a homopolymer or copolymer of an N-substituted (meth) acrylamide monomer having a specified intrinsic viscosity in tetrahydrofuran and gives an aqueous solution capable of exhibiting phase transition from a liquid to a coagulate at a transition temperature of 10.degree. to 37.degree..

    摘要翻译: 提出的是通过引入特定热敏性聚合物的水溶液的方法,所述特定热敏性聚合物在低温下为液体,当加热至患者的体温时会引起凝血,随后进入血管 通过原位加热溶液。 发现适用于该目的的热敏性聚合物是在四氢呋喃中具有特定特性粘度的N-取代的(甲基)丙烯酰胺单体的均聚物或共聚物,并且得到能够在液体中显示出从液体到凝固物的相变的水溶液 转变温度为10〜37℃。

    Method and electrode for electrochemical recovery of lithium value from
aqueous solution
    56.
    发明授权
    Method and electrode for electrochemical recovery of lithium value from aqueous solution 失效
    从水溶液中电化学回收锂值的方法和电极

    公开(公告)号:US5198081A

    公开(公告)日:1993-03-30

    申请号:US841562

    申请日:1992-02-26

    CPC分类号: C25C1/02

    摘要: A novel and efficient electrochemical method is disclosed for the recovery of lithium value from an aqueous solution containing lithium ions in a relatively low concentration together with ions of various kinds of other metallic impurity elements. The method comprises electrochemical selective adsorption of lithium ions from the aqueous solution on to a specific working electrode by applying a DC voltage of a relatively low DC voltage of 0.1-0.4 volt versus a saturated calomel electrode to the working electrode as the cathode opposed to a counterelectrode as the anode and then desorption of the lithium ions therefrom by applying a DC voltage of 0.7-1.2 volts versus a saturated calomel electrode to the lithium-bearing working electrode as the anode opposed to a counterelectrode as the cathode in an aqueous desorption medium containing an electrolyte such as a lithium salt. At least the surface layer of the working electrode is formed from an oxide of manganese prepared by admixing a manganese compound with a limited amount of a lithium or magnesium compound, converting the mixture into oxides by a heat treatment in an oxidizing atmosphere and then removing the lithium or magnesium therefrom by leaching in an acid solution or by an electrochemical means.

    摘要翻译: 公开了一种新颖有效的电化学方法,用于从含有相对低浓度的锂离子的水溶液和各种其它金属杂质元素的离子中回收锂值。 该方法包括将锂离子从水溶液中电化学选择性吸附到特定工作电极上,通过将相对于饱和甘汞电极的相对低的0.1-0.4伏直流电压的DC电压施加到工作电极上,作为与 反电极作为阳极,然后通过向饱和甘汞电极施加0.7-1.2伏特的直流电压,将锂离子与其作为阳极相对的含锂工作电极作为阳极相对于含水解吸介质的水溶液解吸介质中解吸, 电解质如锂盐。 工作电极的至少表面层由锰化合物与有限量的锂或镁化合物混合制备的锰氧化物形成,通过在氧化气氛中的热处理将混合物转化成氧化物,然后除去 通过在酸性溶液中浸出或通过电化学方法浸出,可以得到锂或镁。

    In-line analyzer for particle size distribution in flue gas
    57.
    发明授权
    In-line analyzer for particle size distribution in flue gas 失效
    用于气体中颗粒尺寸分布的在线分析仪

    公开(公告)号:US5090233A

    公开(公告)日:1992-02-25

    申请号:US662576

    申请日:1991-03-01

    摘要: A particle-size distribution analyzer in a vent gas or flue gas which can be in a gas carrying line of a dust- and/or mist-producing process is provided. The analyzer comprises: a series of particle-size classifying units each consisting of a gas-ejection nozzle of an opening having a diameter different from the others and an impaction plate mounted on a revolvable turret in such a fashion that the series of the units can communicate with a suction nozzle in the gas flow line one by one successively in a decreasing order of the nozzle opening diameter; and a light-scattering particle-concentration detecting system which gives the concentration data after particle-size classification as a function of the cut-off size of the particles contained in the gas. In another embodiment, a heater to evaporate the liquid constituent in the mist particles and a second concentration-detecting system are provided downstream of the first concentration-detecting system so that measurements of the particle size distribution can be conducted for the dust particles and mist particles separately.

    摘要翻译: 提供了一种排气或废气中的粒度分布分析仪,其可以处于产生粉尘和/或雾气的气体输送管线中。 分析仪包括:一系列粒度分级单元,每个分级单元由具有不同直径的开口的气体喷射喷嘴组成,并且以这样一种方式安装在可旋转转盘上的冲击板 沿着喷嘴开口直径依次连续地与气体流路中的吸嘴连通; 以及光散射粒子浓度检测系统,其将粒度分级后的浓度数据作为气体中包含的颗粒的截止尺寸的函数。 在另一个实施例中,在第一浓度检测系统的下游设置用于蒸发雾颗粒中的液体成分的加热器和第二浓度检测系统,以便可以对灰尘颗粒和雾颗粒进行粒度分布的测量 分别。

    Method for the preparation of ultra-fine hollow glass spheres
    58.
    发明授权
    Method for the preparation of ultra-fine hollow glass spheres 失效
    超细中空玻璃球的制备方法

    公开(公告)号:US5017523A

    公开(公告)日:1991-05-21

    申请号:US491427

    申请日:1990-03-09

    摘要: Ultra-fine hollow glass spheres suitable as a filler in light-weight composite materials for building use and the like can be prepared from a fine powder of volcanic glass even when the starting powder has a particle size as fine as 20 .mu.m or smaller. The inventive method comprises an acid-leaching treatment of the starting powder using hydrochloric or sulfuric acid under hydrothermal conditions at 150.degree.-200.degree. C. to modify the chemical composition in the surface layer of the particles and a subsequent heat treatment of the acid-treated particles at a specified high temperature to effect expansion by the water vapor produced from the structural water in the softened particles. By virtue of the modified composition in the surface layer and in contrast to the prior art method without the acid treatment, a good balance can be obtained between the rate of water vapor release and softening of the particles even when the particle size is extremely small to facilitate expansion of the particles.

    摘要翻译: 即使起始粉末的粒径为20μm以下,也可以由火山玻璃的微细粉末制备适合作为建筑用轻质复合材料的填料的超细中空玻璃球。 本发明的方法包括在150-2200℃的水热条件下使用盐酸或硫酸对起始粉末进行酸浸处理,以改变颗粒表层的化学组成,随后热处理酸 - 在特定的高温下处理的颗粒通过由软化的颗粒中的结构水产生的水蒸汽进行膨胀。 由于表面层中的改性组合物,与不进行酸处理的现有技术方法形成对照,即使在粒径非常小的情况下,也可以获得水蒸气释放速率和颗粒软化之间的良好平衡 有助于颗粒的膨胀。

    Cathode ray-luminescent phosphor and method for the preparation thereof
    60.
    发明授权
    Cathode ray-luminescent phosphor and method for the preparation thereof 失效
    阴极射线发光荧光体及其制备方法

    公开(公告)号:US6156233A

    公开(公告)日:2000-12-05

    申请号:US266920

    申请日:1999-03-12

    CPC分类号: C09K11/08 C09K11/0805

    摘要: Disclosed is a novel cathode ray-luminescent phosphor which is a composite body consisting of a dealuminized zeolite carrying a specified amount of a metal such as tin, cobalt and nickel or an oxide thereof within the pores of the dealuminized zeolite structure. The cathode ray-luminescent phosphor is prepared by a method comprising the steps of: (a) heating an ammonium-form zeolite in the presence of steam to effect dealuminization of the zeolite; (b) impregnating the dealuminized zeolite with an aqueous solution of a metal salt in an amount of the metal salt in the range from 10 to 60 parts by weight calculated as metal per 100 parts by weight of the dealuminized zeolite; (c) drying the dealuminized zeolite impregnated with the aqueous metal salt solution; and (d) calcining the dried zeolite in a reducing or oxidizing atmosphere at a temperature in the range from 450 to 600.degree. C. for 1 to 5 hours to form a composite of the dealuminized zeolite and the metal or an oxide of the metal, respectively.

    摘要翻译: 公开了一种新颖的阴极射线发光荧光体,它是一种复合体,它由脱铝沸石构成,该脱铝沸石在脱铝沸石结构的孔内承载一定数量的金属如锡,钴和镍或其氧化物。 通过包括以下步骤的方法制备阴极射线发光荧光体:(a)在蒸汽存在下加热铵型沸石以实现沸石的脱铝; (b)用金属盐水溶液浸渍脱铝沸石,金属盐的量为每100重量份脱铝沸石按金属计算为10至60重量份; (c)干燥用金属盐水溶液浸渍的脱铝沸石; 和(d)在还原或氧化气氛中在450-600℃的温度下煅烧干燥的沸石1至5小时,以形成脱铝沸石与金属或金属的氧化物的复合物, 分别。