Actuator
    1.
    发明授权
    Actuator 失效
    执行器

    公开(公告)号:US4862029A

    公开(公告)日:1989-08-29

    申请号:US145861

    申请日:1988-01-20

    摘要: An actuator of the present invention is composed of a monomorph-type piezoelectric ceramic. The monomorph-type piezoelectric ceramic is a BaTiO.sub.3 -based ceramic, a PZT based ceramic having Nb, Sb, La, Mn, Nd and Bi, BaTiO.sub.3 --SrTiO.sub.3 -based ceramic containing SrTiO.sub.3 by 20 to 35 mole %, K(Nb, Ta)O.sub.3 -based ceramic, or a ceramic represented by a general formula: [Pb, (A.sub.1/2 B.sub.1/2)](Zr.sub.1-n, Cn)O.sub.3 where A is a monovalent element such as Li, Na, K, Rb, Cs or the like, B is a trivalent element such as Bi, La, Y, Sb, Ga or the like, A and B being both replaceable solid-meltable elements for Pb, C is an element such as Ti, Sn or the like that is a replaceable solid-meltable element for Zr, and n is from 0 to 0.8.

    摘要翻译: 本发明的致动器由单晶型压电陶瓷构成。 单晶型压电陶瓷是一种BaTiO3系陶瓷,具有Nb,Sb,La,Mn,Nd和Bi,BaTiO3-SrTiO3系陶瓷的PZT系陶瓷,含有20〜35摩尔%的SrTiO 3,K(Nb,Ta )或由通式[Pb,(A1 / 2B1 / 2)](Zr1-n,Cn)O3表示的陶瓷,其中A是Li,Na,K,Rb等的一价元素, Cs等,B是Bi,La,Y,Sb,Ga等的三价元素,A和B都是Pb的可固态可固化元素,C是Ti,Sn等元素 其是用于Zr的可替换的固体可熔性元素,n为0至0.8。

    Process for preparing high-purity .alpha.-type silicon nitride
    4.
    发明授权
    Process for preparing high-purity .alpha.-type silicon nitride 失效
    制备高纯度α型氮化硅的方法

    公开(公告)号:US4346068A

    公开(公告)日:1982-08-24

    申请号:US222671

    申请日:1981-01-05

    IPC分类号: C01B21/068

    摘要: High-purity .alpha.-type silicon nitride comprised of a granular crystal having an .alpha.-phase content of at least 95%, a nitrogen content of at least 38% by weight and an average particle size of not larger than 3 .mu.m is provided. This high-purity .alpha.-type silicon nitride is prepared by heating a nitrogen-containing silane compound at a temperature of at least about 1,300.degree. C. in a heating furnace comprised of a material containing a metal having a melting point exceeding 1,600.degree. C. and capable of being bonded with oxygen at the heating temperature.

    摘要翻译: 提供了由具有至少95%的α-相含量,至少38重量%的氮含量和不大于3μm的平均粒径的粒状晶体构成的高纯度α型氮化硅。 这种高纯度α型氮化硅通过在包含熔点超过1600℃的金属的加热炉中在至少约1300℃的温度下加热含氮硅烷化合物来制备。 并且能够在加热温度下与氧结合。

    Method of manufacturing high-purity silicon nitride powder
    5.
    发明授权
    Method of manufacturing high-purity silicon nitride powder 失效
    制造高纯度氮化硅粉末的方法

    公开(公告)号:US4387079A

    公开(公告)日:1983-06-07

    申请号:US299939

    申请日:1981-09-08

    IPC分类号: C01B21/068 C01B21/087

    摘要: A method of manufacturing highly purified silicon nitride including the steps of preparing a nitrogen-containing silane selected from the group consisting of tetra-amide-monosilane and silicon imide, and heat-treating the prepared nitrogen-containing silane in the presence of ammonia in an inner atmosphere at a temperature above 400.degree. C. for a period of at least two hours to obtain silicon nitride, and cooling and collecting the silicon nitride thus formed. The step of preparing the nitrogen-containing silane comprises continuously reacting gaseous silicon tetra-chloride with gaseous ammonia in an inner atmosphere at a temperature of from -30.degree. to 70.degree. C. to produce the nitrogen-containing silane as a product and collecting the product. The resultant silicon nitride so produced has a chlorine content of less than 0.05 weight percent and a nitrogen content of over 38 weight percent.

    摘要翻译: 一种制造高纯度氮化硅的方法,包括以下步骤:制备选自四酰胺 - 甲硅烷和硅酰亚胺的含氮硅烷,并在氨的存在下,将制备的含氮硅烷在 在400℃以上的内部气氛中保持至少2小时的时间以获得氮化硅,并冷却并收集由此形成的氮化硅。 制备含氮硅烷的步骤包括在-30℃至70℃的温度下,将气态四氯化硅与气态氨在气氛中连续反应,以产生含氮硅烷作为产物,并收集 产品。 如此生成的所得氮化硅的氯含量小于0.05重量%,氮含量超过38重量%。

    Crystal polymorphism of aminoethylphenoxyacetic acid derivative
    7.
    发明授权
    Crystal polymorphism of aminoethylphenoxyacetic acid derivative 失效
    氨基乙基苯氧基乙酸衍生物的晶体多晶型

    公开(公告)号:US06376707B1

    公开(公告)日:2002-04-23

    申请号:US09889857

    申请日:2001-07-23

    IPC分类号: C07C22900

    CPC分类号: C07C217/60 C07C213/10

    摘要: The present invention relates to a crystalline polymorph of 2-[4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxy-phenyl)-1-methylethyl]amino]ethyl]phenoxy]acetic acid having strong diffraction peaks (diffraction angle: 2&thgr;±0.1°) at 10.8, 19.1, 19.3, 19.8, 20.6 and 27.0° in powder X-ray diffraction pattern, which has potent &bgr;2- and &bgr;3-adrenoceptor stimulating effects and is useful as an agent for relieving pain and promoting the removal of calculi in urolithiasis, and the like. For example, the crystalline polymorph can be prepared by hydrolyzing ethyl 2-[4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]-amino]ethyl]phenoxy]acetate phosphate by sodium hydroxide, adding an aqueous phosphoric acid solution at 40° C. and over, adding a mixed solvent of water and methanol or methanol to the resulting compound, and stirring the suspension at 40° C. to reflux temperature for 30 minutes to several hours.

    摘要翻译: 本发明涉及2- [4- [2 - [[(1S,2R)-2-羟基-2-(4-羟基 - 苯基)-1-甲基乙基]氨基]乙基]苯氧基]乙酸的结晶多晶型物 在其粉末X射线衍射图中,在10.8,19.1,19.3,19.8,20.6和27.0°处具有强衍射峰(衍射角:2θ±0.1°)的酸,其具有有效的β2-和β3-肾上腺素受体刺激作用,并且是有用的 作为缓解疼痛并促进尿石结石中的结石的去除的药剂等。 例如,结晶多晶型物可以通过水解2- [4- [2 - [[(1S,2R)-2-羟基-2-(4-羟基苯基)-1-甲基乙基] - 氨基]乙基]苯氧基 ]乙酸磷酸盐与氢氧化钠反应,在40℃加入磷酸水溶液,过滤,向所得化合物中加入水和甲醇或甲醇的混合溶剂,并在40℃下将悬浮液在回流温度下搅拌30 几分钟到几个小时。

    Process for preparing large-sized polymer particles
    8.
    发明授权
    Process for preparing large-sized polymer particles 失效
    制备大尺寸聚合物颗粒的方法

    公开(公告)号:US4694035A

    公开(公告)日:1987-09-15

    申请号:US823013

    申请日:1986-01-27

    CPC分类号: C08F257/02 C08F291/00

    摘要: A process for preparing large-sized polymer particles having a particle diameter in a range of 0.1 to 500 .mu.m by seeded polymerization is described, comprising:finely dispersing a polymerizable monomer in an aqueous medium to prepare a monomer dispersion in which a number average particle diameter of the resulting monomer droplets is not larger than that of seed particles, and a number average particle diameter in a semi-stable condition (Dm) of the monomer droplets satisfies, with a desired number average particle diameter of the final polymer particle as D, the following relation:0.5.times.D

    摘要翻译: 描述了通过接种聚合制备粒度在0.1至500μm范围内的大尺寸聚合物颗粒的方法,其包括:将可聚合单体细分散在水性介质中以制备单体分散体,其中数均粒子 所得单体液滴的直径不大于种子颗粒的直径,并且单体液滴的半稳定条件(Dm)中的数均粒径满足所需的最终聚合物颗粒的数均粒径为D 以下关系:将所述单体分散体与种子颗粒的分散体组合以使可聚合单体吸收或吸附在种子颗粒上的0.5×D < 并在聚合引发剂的存在下聚合可聚合单体。