Preparation of pyrocatechol monoethers and pyrocatechols
    1.
    发明授权
    Preparation of pyrocatechol monoethers and pyrocatechols 失效
    邻苯二酚单醚和邻苯二酚的制备

    公开(公告)号:US5319148A

    公开(公告)日:1994-06-07

    申请号:US025732

    申请日:1993-03-02

    IPC分类号: C07C37/50 C07C41/28 C07C41/09

    CPC分类号: C07C41/28 C07C37/50

    摘要: The preparation of pyrocatechol monoethers or pyrocatechols of the formula Ia or Ib respectively ##STR1## ( R.sup.1 and R.sup.2 =H or C.sub.1 --C.sub.8 -hydrocarbon radicals; R.sup.3 =C.sub.1 --C.sub.8 -hydrocarbon radical ) by rearranging a 2-hydroxycyclohexanone dialkyl ketal II ##STR2## a) in the gas phase in the presence of a platinmetal or in the presence of a compound of one of these metals as catalyst in order to obtain a compound Ia, orb) carrying out step a) in the presence of water in order to obtain a compound Ib. The products are used as intermediates in the synthesis of pharmaceuticals, fragrances and flavors.

    摘要翻译: 通过重新配置2-氨基苯甲酸,制备式Ia或Ib的邻苯二酚单醚或邻苯二酚,分别为(Ib和R 2 = H或C 1 -C 8 - 烃基; R 3 = C 1 -C 8 - 烃基) 羟基环己酮二烷基缩酮IIa)在气相中在铂金的存在下或在这些金属之一的化合物作为催化剂存在下,以获得化合物Ia,或b)进行步骤a) 在水的存在下,得到化合物1b。 该产品用作合成药物,香料和香料的中间体。

    Preparation of phthalides
    2.
    发明授权
    Preparation of phthalides 失效
    苯酞的制备

    公开(公告)号:US5296614A

    公开(公告)日:1994-03-22

    申请号:US969725

    申请日:1992-10-30

    IPC分类号: C07D307/88 C07D307/87

    CPC分类号: C07D307/88

    摘要: A process for the preparation of phthalides of the formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another, are hydrogen, C.sub.1 - to C.sub.4 -alkyl or C.sub.1 - to C.sub.4 -alkoxy, by reacting phthalic anhydrides of the formula II ##STR2## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined as above, on hydrogenation catalysts at from 50.degree. to 400.degree. C. and at from 1 to 400 bar, wherein the hydrogenation catalysts employed are essentially free from Lewis acids.

    摘要翻译: 其中R 1,R 2,R 3和R 4彼此独立地为氢,C 1至C 4 - 烷基或C 1至C 4 - 烷氧基的制备式I的苯并二氢呋喃的方法,其中R 1,R 2,R 3和R 4彼此独立地通过邻苯二甲酸 其中R 1,R 2,R 3和R 4如上所定义的式II的酸酐在氢化催化剂上在50-400℃和1-400巴下进行,其中采用氢化催化剂 基本上不含路易斯酸。

    Process for the preparation of tantalum/niobium hydroxides and oxides
with a low fluoride content
    3.
    发明授权
    Process for the preparation of tantalum/niobium hydroxides and oxides with a low fluoride content 失效
    用于制备具有低氟化物含量的钽/氢氧化镉和氧化物的方法

    公开(公告)号:US5194232A

    公开(公告)日:1993-03-16

    申请号:US750519

    申请日:1991-08-27

    IPC分类号: C01G33/00 C01G35/00

    摘要: Fluorine content of tantalum and niobium hydroxides is reduced to under 0.5 weight % by washing such hydroxide precipitates (as obtained by HF digestion and solvent extraction) with dilute ammonia (1 to 10%) and then water in two washing stages. The first washing stage includes a partial neutralization and the used wash water of the second stage is advantageously recycled, after adjustment of its ammonia concentration, for use as the first stage washing liquid.

    摘要翻译: 通过用稀氨(1至10%)洗涤这种氢氧化物沉淀物(通过HF消化和溶剂萃取获得),然后在两个洗涤阶段中洗涤水,将钽和铌氢氧化物的含量降低至0.5重量%以下。 第一洗涤阶段包括部分中和,并且在调节其氨浓度之后有利地将第二阶段的用过的洗涤水循环用作第一级洗涤液。

    Non-contacting sealing arrangement for a rotating part
    4.
    发明授权
    Non-contacting sealing arrangement for a rotating part 失效
    用于旋转部件的非接触式密封装置

    公开(公告)号:US4560172A

    公开(公告)日:1985-12-24

    申请号:US592248

    申请日:1984-03-22

    IPC分类号: F16J15/42 F16J15/40 F16J15/54

    CPC分类号: F16J15/406 F16J15/54

    摘要: A non-contacting seal between a rotating part to be sealed and a stationary part, in which the rotating part includes a coaxial disk which is surrounded by a stationary collecting channel axially closely adjoining the disk but without contacting it. The collecting channel forms a spirally shaped hollow space in the circumferential direction of the rotating part, with a sealing medium return line connected to the hollow space within the area of enlargement of the hollow space. A seal, however, may also be installed between the rotating part and the fixed part.

    摘要翻译: 在待密封的旋转部件和固定部件之间的非接触式密封件,其中旋转部件包括同轴盘,该同轴盘被轴向紧密地邻接盘而不与其接触的静止集合通道包围。 收集通道在旋转部分的圆周方向上形成螺旋形的中空空间,密封介质返回线连接到中空空间扩大区域内的中空空间。 然而,密封件也可以安装在旋转部件和固定部件之间。

    Reciprocating piston machine with a rotary hydraulic displacer between pistons and machine shaft
    5.
    发明授权

    公开(公告)号:US3696614A

    公开(公告)日:1972-10-10

    申请号:US3696614D

    申请日:1971-05-12

    摘要: A reciprocating piston machine comprises a housing structure with hydraulic cylinders, piston means reciprocable in said respective cylinders, and a revolvable shaft. A hydraulic displacer mechanism has oil columns in the respective cylinders for linking the displacer mechanism with the pistons, the displacer mechanism comprises a stationary annular portion coaxial with the shaft and forming part of the housing structure. The annular portion has inwardly open chamber recesses distributed along its inner periphery and communicating with the oil columns. The hydraulic displacer mechanism has a rotor diametrically smaller than the interior of the annular housing portion and connected with the shaft in eccentric relation thereto, the rotor is consecutively engageable with the recesses to thereby vary the oil volume in the chambers. A circle of fixed internal gear teeth on the housing structure, meshes with a gearteeth circle on the eccentric rotor. The latter circle has a smaller diameter than the circle of the fixed gear teeth and is in rolling mesh engagement therewith, whereby during operation the rotor sequentially coacts the said respective recesses to form variable volume chambers together therewith.

    摘要翻译: 往复式活塞机包括具有液压缸的壳体结构,可在所述各个气缸中往复运动的活塞装置和可旋转轴。 液压置换机构在相应气缸中具有用于将置换器机构与活塞连接的油柱,所述置换机构包括与所述轴同轴并形成所述壳体结构的一部分的静止环形部分。 环形部分沿其内周分布有向内敞开的腔室凹部并与油柱连通。 液压置换机构具有直径小于环形壳体部分内部的转子,并与轴偏心地连接,该转子可与凹部连续地接合,从而改变腔室中的油量。 外壳结构上的一圈固定的内齿轮齿与偏心转子上的齿轮齿啮合。 后一个圆的直径小于固定齿轮齿的直径,并与其啮合,从而在操作过程中,转子顺序地与所述相应的凹槽共同构成可变体积的腔室。

    Elastic loop for suspending the exhaust system of a motor vehicle
    6.
    发明申请
    Elastic loop for suspending the exhaust system of a motor vehicle 有权
    用于悬挂汽车排气系统的弹性回路

    公开(公告)号:US20060213422A1

    公开(公告)日:2006-09-28

    申请号:US11445012

    申请日:2006-06-01

    IPC分类号: G01D21/00

    CPC分类号: F16F1/46 B60K13/04 F16F1/371

    摘要: An elastic loop 1 is provided for suspending an exhaust system of a motor vehicle at a vehicle floor of the motor vehicle. The elastic loop 1 has a basic body 4 made of an elastomeric material 5, the basic body 4 enclosing two receiving eyes 6 and 7, one of which being provided for receiving a supporting part, and the other of which being provided for receiving a part to be supported, and the basic body 4 comprising at least two elastic supporting bands 8 and 9 which run from the one receiving eye 6 to the other receiving eye 7 in a main plane of extension and operation of the loop. Further, the elastic loop 1 has a ring 21 enclosing the basic body 4 in the main plane, the ring 21 being a pre-cut piece 24 of a ribbon 20 which is continuously woven in consecutive one-layer and two-layer areas, i.e. once in a single closed layer and once in two separate layers, the pre-cut piece 24 including an entire two-layer area and at least parts of both adjacent one-layer areas.

    摘要翻译: 提供弹性回路1,用于将机动车辆的排气系统悬挂在机动车辆的车辆地板处。 弹性环1具有由弹性体材料5制成的基体4,基体4包围两个接收眼6和7,其中一个被设置成用于容纳支撑部分,另一个被设置用于容纳部分 并且基体4包括至少两个弹性支撑带8和9,弹性支撑带8和9在一个接收眼6延伸到另一个接收眼7的主平面中延伸和操作。 此外,弹性环1具有在主平面内包围基体4的环21,环21是带20的预切割片24,其连续地编织在连续的一层和两层区域中,即 一次在单个封闭层中并且一次在两个单独的层中,预切割件24包括整个两层区域和两个相邻单层区域的至少一部分。

    Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine
    7.
    发明授权
    Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine 失效
    制备N-甲基-2(3,4-二甲氧基苯基) - 乙胺的方法

    公开(公告)号:US5840981A

    公开(公告)日:1998-11-24

    申请号:US945530

    申请日:1997-10-28

    摘要: A process for preparing N-methyl-2-(3,4-dimethoxyphenyl)-ethylamine comprises hydrogenating 3,4-dimethoxyphenylacetonitrile with a methylamine of the general formula I ##STR1## where R.sup.1 is hydrogen, benzyl or tert-butyl, and hydrogen in the presence of a supported catalyst which comprises from 0.05 to 50% by weight of copper chromite, copper, silver, gold, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum or mixtures thereof, in the presence or absence of water at from 20.degree. to 200.degree. C. under from 1 to 300 bar.

    摘要翻译: PCT No.PCT / EP96 / 01861 Sec。 371日期1998年1月23日 102(e)日期1998年1月23日PCT提交1996年5月4日PCT公布。 公开号WO96 / 36589 日期:1996年11月21日制备N-甲基-2-(3,4-二甲氧基苯基) - 乙胺的方法包括用具有通式I的甲胺(I)氢化3,4-二甲氧基苯基乙腈,其中R1是氢, 苄基或叔丁基,和氢在负载催化剂存在下,其包含0.05至50重量%的亚铬酸铜,铜,银,金,铁,钴,镍,钌,铑,钯,锇,铱, 铂或其混合物,在存在或不存在20至200℃的水的条件下,在1至300巴下。

    Method and apparatus for manufacturing a tube bend metal
    9.
    发明授权
    Method and apparatus for manufacturing a tube bend metal 失效
    管弯金属制造方法及装置

    公开(公告)号:US4517434A

    公开(公告)日:1985-05-14

    申请号:US557928

    申请日:1983-12-05

    CPC分类号: B23K9/046

    摘要: A method of manufacturing a tube bend of a metal comprises positioning a base ring in the range of the welding device, using the welding device to deposit a first section of metal on the ring, moving the ring and the welding device through an arc relatively to each other by substantially the thickness of the first section of metal and thereafter depositing a subsequent section over the first section and repeating the moving and the depositing until the desired section thickness is formed into a wall. The device includes means for mounting a plate for pivotal movement and a base ring mounted on the plate for movement therewith below a welding device arranged so that the welding device and the plate remove relatively through an arcuate path so that a series of sections of metal may be built up into a tube bend wall. The welding device advantageously includes an electrode feeder and the apparatus preferably includes a welding device to provide a plating along the side of the wall section which is built up.

    摘要翻译: 制造金属管弯管的方法包括:在焊接装置的范围内定位基环,使用焊接装置将金属的第一部分沉积在环上,使环和焊接装置通过相对于 彼此基本上是金属的第一部分的厚度,然后在第一部分上沉积随后的部分,并重复移动和沉积,直到所需的部分厚度形成为壁。 该装置包括用于安装用于枢转运动的板的装置和安装在板上的基环,用于在焊接装置下方移动,焊接装置布置成使得焊接装置和板相对通过弧形路径相对移除,使得一系列金属部分 被建成一个弯管壁。 焊接装置有利地包括电极馈送器,并且该装置优选地包括焊接装置,以沿着建立的壁部分的侧面提供电镀。