Dewatering of circulatory flows in the production of bisphenol A
    31.
    发明申请
    Dewatering of circulatory flows in the production of bisphenol A 失效
    双酚A生产中循环流动的脱水

    公开(公告)号:US20050177007A1

    公开(公告)日:2005-08-11

    申请号:US11043275

    申请日:2005-01-26

    IPC分类号: C07C37/74 C07C37/84 C07C37/68

    摘要: A process for producing bisphenol A is disclosed. The process entails a) reacting phenol with acetone in the presence of an acidic catalyst to form a reaction mixture that includes bisphenol A and water, and b) removing water from the reaction mixture by distillation in a column to obtain a bottom product, and c) separating bisphenol-A/phenol adduct from the reaction mixture by crystallization and filtration. The bottom temperature of the column is 100 to 150° C., the overhead temperature of the column is 20 to 80° C., the absolute pressure is 50 to 300 mbar at the head of the column and 100 to 300 mbar at the bottom of the column, and wherein said (c) is carried out before or after said (b).

    摘要翻译: 公开了一种生产双酚A的方法。 该方法需要在酸性催化剂的存在下使苯酚与丙酮反应,形成包括双酚A和水的反应混合物,和b)通过在塔中蒸馏从反应混合物中除去水以得到底部产物,c )通过结晶和过滤从反应混合物中分离双酚A /苯酚加合物。 柱的底部温度为100至150℃,柱的塔顶温度为20至80℃,柱顶部的绝对压力为50至300毫巴,底部为100至300毫巴 并且其中所述(c)在所述(b)之前或之后进行。

    Method for the production of bis(4-hydroxyaryl)alkanes
    34.
    发明授权
    Method for the production of bis(4-hydroxyaryl)alkanes 有权
    生产双(4-羟基芳基)烷烃的方法

    公开(公告)号:US06384288B1

    公开(公告)日:2002-05-07

    申请号:US09807645

    申请日:2001-04-16

    IPC分类号: C07C3768

    CPC分类号: C07C37/70 C07C39/16

    摘要: A process for producing bis(4-hydroxyaryl)alkane is disclosed. The process comprise in sequence the steps of (a) passing inert gas through a melt at 150 to 230° C. that contains bis(4-hydroxyaryl)alkane and other aromatic hydroxy compounds, under conditions designed to remove said other aromatic hydroxy compounds from said melt and to obtain a stream of inert gas that contains said other aromatic hydroxy compounds (b) condensing the stream obtained in (a) to remove said other aromatic hydroxy compound, and to obtain a stream of inert gas, and (c) purifying and compressing the stream of inert gas obtained in (b), and recycling to step (a).

    摘要翻译: 公开了一种生产双(4-羟基芳基)烷烃的方法。 该方法依次包括以下步骤:(a)在设计为从其中除去所述其它芳族羟基化合物的条件下,将惰性气体通过含有双(4-羟基芳基)烷烃和其它芳族羟基化合物的150-230℃的熔体 所述熔体并且获得含有所述其它芳族羟基化合物的惰性气体流(b)将(a)中获得的流冷凝以除去所述其它芳族羟基化合物,并获得惰性气体流,和(c)纯化 并压缩(b)中获得的惰性气体流,并循环至步骤(a)。

    Headlight for motor vehicle
    38.
    发明授权
    Headlight for motor vehicle 失效
    汽车头灯

    公开(公告)号:US5255163A

    公开(公告)日:1993-10-19

    申请号:US1806

    申请日:1993-01-08

    申请人: Rainer Neumann

    发明人: Rainer Neumann

    摘要: A headlight for a motor vehicle comprises a gas discharge lamp as a light source emitting visible light and light in UV-wavelength region, a reflector having a first region which reflects the light for forming a low beam and a second region which reflects an additional light beam illuminating a region located beyond a region illuminated by the high beam, a filter arranged in a path of the additional light beam and at least partially absorbing the visible light and at least partially permeable for light in UV-wavelength region. The filter is formed by a coating which covers the second reflector region and is composed of a filtering material.

    摘要翻译: 用于机动车辆的前灯包括气体放电灯作为在UV波长区域中发出可见光和光的光源,反射器具有反射用于形成近光的光的第一区域和反射附加光的第二区域 光束照射位于由远光束照射的区域之外的区域,滤光器布置在附加光束的路径中并且至少部分地吸收可见光并且对于UV波长区域中的光至少部分可透过。 过滤器由覆盖第二反射器区域并由过滤材料构成的涂层形成。

    Headlamp for power vehicle
    39.
    发明授权
    Headlamp for power vehicle 失效
    动力车前照灯

    公开(公告)号:US5047902A

    公开(公告)日:1991-09-10

    申请号:US572619

    申请日:1990-08-23

    摘要: A headlamp for power vehicles comprises a reflector, a light source arranged in the reflector, the light source and the reflector being movable relative to one another so that in one position the light source is located close to a focal point of the reflector and in another position it is spaced from the focal point both along an optical axis and also vertically relative to the optical axis of the reflector.

    摘要翻译: 用于动力车辆的前照灯包括反射器,布置在反射器中的光源,光源和反射器可相对于彼此移动,使得在一个位置中,光源位于靠近反射器的焦点并且在另一个位置 位置与焦点沿着光轴分开,并且也相对于反射器的光轴垂直。

    Motor vehicle headlight
    40.
    发明授权
    Motor vehicle headlight 失效
    汽车大灯

    公开(公告)号:US4924359A

    公开(公告)日:1990-05-08

    申请号:US237195

    申请日:1988-08-29

    IPC分类号: F21S8/10 F21V7/00 F21V7/09

    CPC分类号: F21S48/1364 F21S48/1172

    摘要: The reflection surface of the reflector is composed of four segments depending on the low-beam light distribution pattern according to the ECE or SAE standard. For the ECE low-beam light distribution pattern, segment is part of a paraboloid of revolution; segment is a parellipsoid; reflector segment is a parellipsoid; and reflector segment is a general paraboloid. The various segments merge continuously and with smooth transitions with one another. For the SAE low-beam light distribution pattern, the reflector segment is a paraboloid of revolution; the reflector segment is a general paraboloid; the reflector segment is a paraboloid of revolution; and the reflector segment is a general paraboloid; in the SAE low-beam light distribution pattern as well, the reflector segments merge with one another continuously and with smooth transitions. The original beam of light produced by the various reflector surfaces of the reflector 1 is substantially equivalent to the low beam as allowed by law and that is suitable for the road surface, so that the dispersion plate can largely be dispensed with, or else can be inclined steeply or need have only a few optical devices.

    摘要翻译: 反射器的反射面根据ECE或SAE标准的近光配光图案由四个部分组成。 对于欧洲经委会的远光配光模式,分段是革命抛物面的一部分; 片段是parellipsoid; 反射器部分是一个parellipsoid; 反射段是一般的抛物面。 不同的段落连续合并,并且彼此平滑过渡。 对于SAE近光配光图案,反射器段是一个抛物面的革命; 反射器部分是一般的抛物面; 反射器部分是一个抛物面的革命; 反射器段是一般的抛物面; 在SAE近光配光图案中,反射器片段彼此连续并且平滑地转换。 由反射器1的各个反射器表面产生的原始光束基本上等于根据法律允许的低光束并且适合于路面,使得可以大幅度地分配分散板,或者可以是 倾斜或需要只有几个光学设备。