PLASMA DISPLAY PANEL AND METHOD FOR MANUFACTURING THE SAME
    13.
    发明申请
    PLASMA DISPLAY PANEL AND METHOD FOR MANUFACTURING THE SAME 有权
    等离子体显示面板及其制造方法

    公开(公告)号:US20090140652A1

    公开(公告)日:2009-06-04

    申请号:US12302263

    申请日:2007-05-31

    IPC分类号: H01J17/49

    摘要: “Discharge delay” and “dependence of discharge delay on temperatures” are solved by improving a protective layer, thus a PDP can be driven at a low voltage. Furthermore, the PDP can display excellent images by suppressing “dependence of discharge delay on space charges.” Liquid-phase magnesium alkoxide (Mg (OR)2) or acetylacetone magnesium ate whose purity is 99.95% or more is prepared, and is hydrolyzed by adding a small amount of acids to the solution. Thus, a gel of magnesium hydroxide that is a magnesium oxide precursor is formed. Burning the gel in atmosphere at 700° C. or more produces powder containing MgO particles 16a-16d having the NaCl crystal structure with (100) and (111) crystal faces or with (100), (110) and (111) crystal faces. By pasting the powder on a dielectric layer 7 or a surface layer 8, the MgO powder 16 is formed so as to serve as the protective layer.

    摘要翻译: 通过改善保护层来解决“放电延迟”和“放电延迟对温度的依赖性”,因此可以以低电压驱动PDP。 此外,PDP可以通过抑制“放电延迟对空间电荷的依赖性”来显示优异的图像。 制备纯度为99.95%以上的液相镁醇盐(Mg(OR)2)或乙酰丙酮镁盐,并通过向溶液中加入少量酸水解。 因此,形成作为氧化镁前体的氢氧化镁凝胶。 在700℃以上的大气中燃烧凝胶,产生具有(100)和(111)晶面的NaCl晶体结构的MgO粒子16a-16d或与(100),(110)和(111)晶面 。 通过将粉末粘贴在电介质层7或表面层8上,形成MgO粉末16作为保护层。

    Method of removing sulphur dioxide from a gaseous stream
    17.
    发明授权
    Method of removing sulphur dioxide from a gaseous stream 失效
    从气流中除去二氧化硫的方法

    公开(公告)号:US4867961A

    公开(公告)日:1989-09-19

    申请号:US160699

    申请日:1988-02-26

    申请人: Joseph Palmer

    发明人: Joseph Palmer

    摘要: Capture-fixation of SO.sub.2 from flue and non-ferrous smelter gases is achieved with the use of MgO aqueous slurry as an absorbing medium. During the absorption, most of the MgO is converted to MgSO.sub.4 and the rest is solubilized as MgSO.sub.3 and Mg(HSO.sub.3).sub.2. The clear solution obtained at the end of the absorption is brought to about 40.degree. C. and is treated with sulphuric acid in an amount representing at least 5% in excess of the stoichiometric requirement whereby sulphite and bisulphite of magnesium are converted to magnesium sulphate. The magnesium sulphate obtained above can be used in a two stage addition of potassium chloride to obtain magnesium chloride, and calcined dolomite added to the remainder whereby magnesium hydroxide is precipitated and may be filtered off from the resulting CaCl.sub.2 solution. The process provides a means of removing SO.sub.2 from flue and smelter gases and at the same time produces industrially important chemical products (SO.sub.2, H.sub.2 SO.sub.4, K.sub.2 SO.sub.4, MgO, CaCl.sub.2).

    摘要翻译: 通过使用MgO含水浆料作为吸收介质,可以实现烟道和有色金属冶炼气体SO2捕集固定。 在吸收过程中,大部分的MgO被转化为MgSO 4,其余的以硫酸镁和Mg(HSO3)2的形式溶解。 在吸收结束时获得的澄清溶液达到约40℃,并且用超过化学计量要求的至少5%的量的硫酸处理,从而将亚硫酸盐和亚硫酸氢盐转化成硫酸镁。 得到的硫酸镁可以两步加入氯化钾,得到氯化镁,煅烧后的白云石加入其中,由此使氢氧化镁沉淀,并从所得的CaCl 2溶液中滤出。 该方法提供了从烟道和冶炼气体中除去SO2的方法,同时产生工业上重要的化学产物(SO2,H2SO4,K2SO4,MgO,CaCl2)。

    Fibrous magnesium oxide and process for production thereof
    18.
    发明授权
    Fibrous magnesium oxide and process for production thereof 失效
    纤维状氧化镁及其制造方法

    公开(公告)号:US4505887A

    公开(公告)日:1985-03-19

    申请号:US625296

    申请日:1984-06-27

    摘要: A magnesium oxide having a cubic system needle-like crystal structure and a length-to-diameter ratio, determined by an electron microscope at a magnification of 10,000, of at least about 5; and a process for producing a magnesium oxide having a cubic system needle-like crystal structure, which comprises calcining a basic magnesium compound having a needle-like crystal structure expressed by the following formulaMg(OH).sub.2-nx A.sub.x.sup.n-.mH.sub.2 Owherein A.sup.n- represents a monovalent (n=1) to tetravalent (n=4) anion, x is 0.2.ltoreq.x.ltoreq.0.5, and m is 0

    摘要翻译: 具有立方体系针状晶体结构的氧化镁和通过电子显微镜以10,000的倍率测定的长径比为至少约5的氧化镁; 以及制造具有立方晶系针状晶体结构的氧化镁的方法,其包括煅烧由下式Mg(OH)2 -nxA·x·n·mH 2 O表示的针状结晶结构的碱性镁化合物,其中An- 表示一价(n = 1)至四价(n = 4)阴离子,x为0.2≤x≤0.5,m为0