利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

36 条记录 (耗时 0.021 秒)

    Wastewater disinfection with a combination of biocides
    5.
    发明公开
    Wastewater disinfection with a combination of biocides 失效
    Abwasserentkeimung mittels einer Kombination von Bioziden。

    公开(公告)号：EP0460261A1

    公开(公告)日：1991-12-11

    申请号：EP90110728.4

    申请日：1990-06-06

    申请人： THE DOW CHEMICAL COMPANY (a Delaware corporation)

    发明人： Karbowski, Robert J.

    IPC分类号： C02F1/76 ,  C02F1/50

    CPC分类号： C02F1/76 ,  C02F1/50 ,  C02F1/766

    摘要： Wastewater is effectively disinfected while reducing both chlorine consumption and more particularly the levels of residual chlorine discharged from the wastewater treatment plant. The wastewater is first contacted with a sufficient amount of chlorine to satisfy the chlorine demand and to obtain as low a residual level of chlorine as possible. After the chlorine demand has been satisfied, the wastewater is disinfected with an effective amount of 2,2-dibromo-3-nitrilopropionmaide.

    摘要翻译： 废水被有效消毒，同时减少氯消耗，特别是废水处理厂排放的残留氯水平。 首先将废水与足够量的氯接触以满足氯的需求，并且尽可能地获得低的氯残留量。 在满足氯需求后，用有效量的2,2-二溴-3-硝基丙酰胺消毒废水。

    INCREASING ALUMINUM NITRIDE THERMAL CONDUCTIVITY VIA PRE-DENSIFICATION TREATMENT
    6.
    发明公开
    INCREASING ALUMINUM NITRIDE THERMAL CONDUCTIVITY VIA PRE-DENSIFICATION TREATMENT 失效
    由处理增氮化铝的热导压缩前。

    公开(公告)号：EP0437449A1

    公开(公告)日：1991-07-24

    申请号：EP89910261.0

    申请日：1989-09-01

    申请人： THE DOW CHEMICAL COMPANY (a Delaware corporation)

    发明人： KNUDSEN, Arne, K.

    IPC分类号： C04B35

    CPC分类号： C04B35/581

    摘要： On a mis au point un procédé de production d'articles de nitrure d'aluminium denses présentant une conductivité thermique augmentée. Le procédé comprend les étapes consistant à former un agglomérat de poudre comprenant de l'AlN seul ou combiné avec d'autres composés céramiques, à ajouter un auxiliaire de densification, puis à exposer ledit agglomérat à un environnement servant à réduire la teneur en oxygène de l'agglomérat, et ensuite à densifier ledit agglomérat par frittage ou compression à chaud afin d'obtenir un article dense. On a découvert que ledit article d'AlN densifié présente une conductivité thermique élevée.

    A foaming system for rigid urethane and isoyanurate foams
    7.
    发明公开
    A foaming system for rigid urethane and isoyanurate foams 失效
    泡沫系统用于硬质聚氨酯和泡沫ISOYANURATE

    公开(公告)号：EP0398147A3

    公开(公告)日：1991-03-20

    申请号：EP90108748.6

    申请日：1990-05-09

    申请人： THE DOW CHEMICAL COMPANY (a Delaware corporation)

    发明人： Smits, Guido Freddy ,  Grünbauer, Henri Jacobus Marie

    IPC分类号： C08J9/14

    CPC分类号： C08J9/143 ,  C08J2375/04

    摘要： This invention relates to rigid closed-celled polyisocyanate-based foams exhibiting improved dimensional stability and a process for their preparation. In particular, it relates to resulting foams containing within their cells, a gas mixture comprising from 15 to 70 mole percent carbon dioxide and from 30 to 85 mole percent of a halocarbon mixture. The halocarbon mixture itself, comprises (a) from 40 to 95 mole percent based on moles of (a) and (b) present of a halocarbon compound having a boiling point of at least 283°K, and (b) from 50 to 60 mole percent of a halocarbon compound having a boiling point equal to or less than 266°K. Preferred halocarbons for component (a) and (b) are ethane halocarbons especially fluorodi­chloroethane or dichlorotrifluoroethane and chlorodi­fluoroethane, respectively.

    Polyurethane foams manufactured with mixed gas/liquid blowing agents
    8.
    发明公开
    Polyurethane foams manufactured with mixed gas/liquid blowing agents 失效
    聚氨酯泡沫体通过gasartigem和液体推进剂的混合物制备。

    公开(公告)号：EP0400443A2

    公开(公告)日：1990-12-05

    申请号：EP90109609.9

    申请日：1990-05-21

    申请人： THE DOW CHEMICAL COMPANY (a Delaware corporation)

    发明人： Lin, Chung-Yuan

    IPC分类号： C08J9/14

    CPC分类号： C08J9/144 ,  C08J9/143 ,  C08J2375/04

    摘要： Disclosed are mixed halocarbon blowing agents comprising (1) halocarbons boiling below 10°C, (2) halocarbons boiling between 20°C and 35°C, and (3) inert organic liquids having a boiling point of from 35°C to 125°C.
    Also disclosed are blends of the above mixed blowing agents with active hydrogen-containing com­pounds, particularly polyols and the rigid closed cell foams prepared from such blends.
    Up to 60 percent reduction in hard halocarbons is realized with the mixed blowing agents.

    摘要翻译： 公开了包含混合卤化碳发泡剂（1）卤素的碳在10℃以下沸点，（2）卤素碳20℃和35℃，以及（3）惰性有机液体之间沸水具有从35℃至125℃的沸点 C.游离缺失所以盘是具有含活性氢的化合物，特别是多元醇和从寻求共混物制备的硬质闭孔泡沫上述混合发泡剂的共混物。 达在硬碳光晕减少了60％，实现与混合发泡剂。