Refrigerant compositions
    1.
    发明授权
    Refrigerant compositions 失效
    制冷剂组合物

    公开(公告)号:US06495060B2

    公开(公告)日:2002-12-17

    申请号:US09242809

    申请日:2000-02-10

    IPC分类号: C09K500

    摘要: A composition comprising (A) 1,1,2,2,3-pentafluoropropane(CF2HCF2CFH2) and (B) at least one hydrofluorocarbon selected from the group consisting of 1,1,1,3,3-pentafluoropropane (CF3CH2CF2H) and 1,1,1,2,2,3,3,4,4-nonafluorobutane (CF3CF2CF2CF2H) is described. The composition is useful as a refrigerant and may be used in chillers as a replacement for refrigerant R-11.

    摘要翻译: 一种组合物,其包含(A)1,1,2,2,3-五氟丙烷(CF 2 HCF 2 CFH 2)和(B)至少一种选自1,1,1,3,3-五氟丙烷(CF 3 CH 2 CF 2 H)和1 ,1,1,2,2,3,3,4,4-九氟丁烷(CF 3 CF 2 CF 2 CF 2 H)。 该组合物可用作制冷剂,并且可用于冷却器中作为制冷剂R-11的替代物。

    Oxygen accumulator for constant partial pressure semi-closed breathing
apparatus
    2.
    发明授权
    Oxygen accumulator for constant partial pressure semi-closed breathing apparatus 失效
    用于恒压分压半闭式呼吸器的氧气蓄能器

    公开(公告)号:US4454878A

    公开(公告)日:1984-06-19

    申请号:US342884

    申请日:1982-01-26

    申请人: James D. Morrison

    发明人: James D. Morrison

    IPC分类号: B63C11/18 A61M16/00

    CPC分类号: B63C11/24

    摘要: The invention relates to improvements in a diver's semi-closed circuit breathing apparatus and is intended to better control the partial pressure of oxygen during descent and ascent. Such apparatus includes a counterlung, sources of oxygen and inert gas, an oxygen regulator, a mass flow jet in the oxygen circuit, a regulator for the inert gas, and a feed-back controlled laminar flow element for feeding a mixture of the oxygen and inert gas to a counterlung of the breathing apparatus. The improvement comprises the provision of an oxygen accumulator in the oxygen circuit following the mass flow jet so that a portion of the delivered oyxgen is diverted thereto during descent to counteract oxygen partial pressure overshoot. At constant depth the apparatus operates normally, maintaining appropriate oxygen partial pressure, and, during ascent, oxygen is returned from the accumulator to the breathing apparatus to counteract any drop in oxygen partial pressure.

    摘要翻译: 本发明涉及潜水员的半闭合呼吸装置的改进,并且旨在更好地控制下降和上升期间氧的分压。 这种装置包括对置的氧气和惰性气体源,氧气调节器,氧气回路中的质量流量射流,惰性气体的调节器,以及用于供给氧气和/或氧气的混合物的反馈控制层流元件 惰性气体到呼吸器的对面。 该改进包括在质量流动喷射之后在氧气回路中提供氧气储存器,使得一部分输送的氧气在下降期间被转移到其以抵消氧分压过冲。 在恒定深度下,装置正常工作,保持适当的氧分压,并且在上升期间,氧从蓄能器返回到呼吸装置以抵消氧分压的任何下降。

    Method
    3.
    发明申请
    Method 有权
    方法

    公开(公告)号:US20120201864A1

    公开(公告)日:2012-08-09

    申请号:US13388476

    申请日:2010-08-02

    IPC分类号: A61K9/14 A61P7/00 A61K33/26

    摘要: There is provided a method of producing a mixed metal compound comprising at least Mg2+ and at least Fe+ having an aluminium content of less than 10000 ppm, having an average crystal size of less than 20 nm (200 A) comprising the steps of: (a) combining a Mg2+ salt and a Fe3+ salt with Na2CO3 and NaOH to produce a slurry, wherein the pH of the slurry is maintained at from 9 5 to 1 1, and wherein the Na2CO3 is provided at an excess of 0 to 4.0 moles than is required to complete the reaction (b) subjecting the slurry to mixing under conditions providing a power per unit volume of 0 03 to 1.6 kW/m3 (c) separating the mixed metal compound from the slurry, to obtain a crude product having a dry solid content of at least 10 wt % (d) drying the crude product either by (i) heating the crude product to a temperature of no greater than 150° C. and sufficient to provide a water evaporation rate of 0.05 to 1 5 kg water per hour per kg of dry product, or (H) exposing the crude product to rapid drying at a water evaporation rate of 500 to 50000 kg water per hour per kg of dry product.

    摘要翻译: 提供一种生产包含至少具有小于10000ppm的铝含量的Mg 2+和至少Fe +的混合金属化合物的方法,其平均晶体尺寸小于20nm(200),包括以下步骤:(a )将Mg2 +盐和Fe3 +盐与Na 2 CO 3和NaOH组合以产生浆料,其中浆料的pH保持在9 5至11,并且其中提供的Na 2 CO 3的过量比0至4.0摩尔 需要完成反应(b)在提供每单位体积0 03至1.6kW / m 3的功率的条件下使浆料混合(c)从混合物中分离混合的金属化合物,以获得具有干燥固体的粗产物 至少10重量%的含量(d)通过以下步骤干燥粗产物:(i)将粗产物加热到不高于150℃的温度,并且足以提供0.05至15kg水的水蒸发速率 小时/ kg干燥产物,或(H)将粗产物暴露于快速干燥 每小时每千克干燥产品的水蒸发速率为500-500千克水。

    Refrigerant compositions
    4.
    发明授权
    Refrigerant compositions 有权
    制冷剂组合物

    公开(公告)号:US6117356A

    公开(公告)日:2000-09-12

    申请号:US242807

    申请日:1999-05-07

    IPC分类号: F25B1/00 C09K3/30 C09K5/04

    摘要: ?PPA composition is described which comprises carbon dioxide (CO2), at least one hydrofluorocarbon selected from the group consisting of 1,1,1,2tetrafluoroethane (R-134a), 1,1,2,2-tetrafluoroethane (R-134) and 1,1difluoroethane (R-152a), and at least one hydrofluorocarbon selected from the group consisting of 1,1,1,3,3,3-hexafluoropropane (R-236fa) and 1,1,1,2,3,3-hexafluoropropane (R-236ea). The composition may additionally comprise at least one hydrocarbon and can be used as a replacement for refrigerant R-12 in automobile air conditioning and domestic refrigeration systems.

    摘要翻译: PCT No.PCT / GB97 / 02198 Sec。 371日期1999年5月7日 102(e)日期1999年5月7日PCT 1997年8月18日PCT公布。 第WO98 / 08912号公报 日期:1998年3月5日描述了一种组合物,其包含二氧化碳(CO 2),至少一种选自1,1,1,2-四氟乙烷(R-1​​34a),1,1,2,2-四氟乙烷 (R-134)和1,1-二氟乙烷(R-1​​52a),和至少一种选自1,1,1,3,3,3-六氟丙烷(R-236fa)和1,1,1 ,2,3,3-六氟丙烷(R-236ea)。 该组合物可另外包含至少一种烃,并可用作汽车空调和家用制冷系统中制冷剂R-12的替代物。

    Tandem quadrupole mass spectrometer for selected ion fragmentation
studies and low energy collision induced dissociator therefor
    5.
    发明授权
    Tandem quadrupole mass spectrometer for selected ion fragmentation studies and low energy collision induced dissociator therefor 失效
    串联四极杆质谱仪用于选择的离子碎片研究和低能碰撞诱导离解器

    公开(公告)号:US4234791A

    公开(公告)日:1980-11-18

    申请号:US960439

    申请日:1978-11-13

    IPC分类号: H01J49/42 B01D59/44

    CPC分类号: H01J49/4215 H01J49/005

    摘要: A tandem quadrupole-based mass spectrometer including a highly efficient intermediate fragmentation stage. The disclosed fragmentation stage employs collision-induced dissociation (CID), in an electrodynamic focus device, which may be a quadrupole operated in a broad band filter mode. The disclosed CID process occurs at low energy (e.g., less than 1 keV, but preferably 2 eV to 100 eV), and is quite different from the high energy (e.g, greater than 1 keV, and typically 3 keV to 10 keV) CID process in prior tandem instruments such as mass-analyzed ion kinetic energy spectrometry (MIKES) systems. The efficiency of the present CID fragmentation is as high as 65%.

    摘要翻译: 基于串联四极杆的质谱仪,包括高效的中间碎裂阶段。 所公开的碎片级在电动聚焦装置中使用碰撞诱导解离(CID),电动聚焦装置可以是以宽带滤光器模式操作的四极杆。 所公开的CID过程以低能量(例如,小于1keV,但优选2eV至100eV)发生,并且与高能量(例如,大于1keV,并且通常为3keV至10keV)CID非常不同 诸如质谱分析离子动能能谱(MIKES)系统的先前串联仪器中的过程。 目前CID破碎的效率高达65%。