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    • 4. 发明授权
    • Process for the preparation of a very pure commercial form of
4,2',4'-trichloro-2-hydroxydiphenyl ether
    • 用于制备非常纯的商业形式的4,2',4'-三氯-2-羟基二苯醚的方法
    • US4490562A
    • 1984-12-25
    • US462258
    • 1983-01-31
    • Werner SchreiberMichael Marky
    • Werner SchreiberMichael Marky
    • C07C41/30C07C41/00C07C41/26C07C41/34C07C41/40C07C43/295C07C67/00C07C41/38C07C41/42
    • C07C41/26C07C41/38C07C41/40
    • A very pure, dust-free commercial form of 4,2',4'-trichloro-2-hydroxydiphenyl ether with little odor is prepared by diazotizing 4,2'4'-trichloro-2-aminodiphenyl ether, boiling the diazonium salt and purifying the reaction product. The pure, dust-free and odor-free commercial form is obtained by separating off the acid aqueous phase of the reaction mixture, rendering the mixture containing 4,2'4'-trichloro-2-hydroxydiphenyl ether and 2,4,8-trichlorodibenzofuran alkaline, extracting it several times with an inert water-immiscible solvent, either after removal of the organic solvent by steam distillation and precipitation of the by-product 2,4,8-trichlorodibenzofuran or directly, and then adjusting the pH to 3 to 10; subsequently, the highly volatile constituents are removed from the 4,2',4'-trichloro-2-hydroxydiphenyl ether melt which has separated out, the melt is subjected to molecular distillation and the distilled melt is introduced into an aqueous dispersion of crystalline 4,2',4'-trichloro-2-hydroxydiphenyl ether, this dispersion simultaneously being subjected to wet grinding. Filtration and drying gives a granular-like ready-to-use commercial form.
    • 通过重氮化4,2'4'-三氯-2-氨基二苯醚,沸腾重氮盐和重氮化物制备非常纯净,无尘的商业形式的4,2',4'-三氯-2-羟基二苯醚, 纯化反应产物。 通过分离出反应混合物的酸性水相,得到纯的无尘,无臭味的商业形式,使含有4,2'-四氯-2-羟基二苯醚和2,4,8-三氯-2-羟基二苯醚的混合物, 三氯二苯并呋喃碱性,用惰性水不混溶溶剂萃取数次,无论是通过蒸汽蒸馏除去有机溶剂并沉淀副产物2,4,8-三氯二苯并呋喃或直接,然后将pH调节至3〜 10; 随后,从分离出的4,2',4'-三氯-2-羟基二苯醚熔体中除去高挥发性成分,熔融物进行分子蒸馏,将蒸馏的熔体引入结晶4的水分散体 ,2',4'-三氯-2-羟基二苯醚,该分散体同时进行湿磨。 过滤和干燥得到颗粒状的即用型商业形式。
    • 5. 发明授权
    • Head-mounted optical direct visualization system
    • 头戴式光学直观可视化系统
    • US06977776B2
    • 2005-12-20
    • US10750958
    • 2004-01-05
    • Harald VolkenandtUwe FreyThomas AltWerner Schreiber
    • Harald VolkenandtUwe FreyThomas AltWerner Schreiber
    • G02B27/02G02B27/00G02B27/01H04N5/64G02B27/14G09G5/00
    • G02B27/0172G02B27/0176G02B2027/0132G02B2027/0136G02B2027/0178
    • A head-mounted optical direct visualization system has at least one optical deflecting device (120) with an optical end element (128) for deflecting a virtual image generated by an image source (230) onto the optical end element (128). The virtual image is emitted through the optical end element into the field of view in front of the eyes of the user. The optical deflecting device (120) is attached to the head of the user with the aid of a frame (130). The task of the invention is to configure such a conventional direct visualization system so as to be better adaptable to the requirements of the anatomical and optical features of the user and the application-specific viewing requirements. This task is solved with an adjusting device (140), which is fixed to the frame (130), for variably changing the position of at least the optical end element (128) essentially in a plane parallel to the field of view of the user.
    • 头戴式光学直接可视化系统具有至少一个具有光学终端元件(128)的光学偏转装置(120),用于将由图像源(230)产生的虚拟图像偏转到光学端部元件(128)上。 虚拟图像通过光学终端元件发射到用户眼睛前方的视场中。 光学偏转装置(120)借助于框架(130)附接到使用者的头部。 本发明的任务是配置这种常规的直接可视化系统,以便更好地适应用户的解剖学和光学特征的需求以及特定应用的观看要求。 该任务通过固定到框架(130)的调节装置(140)来解决,用于基本上在平行于用户视场的平面中可变地改变至少光学端部元件(128)的位置 。