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    Process for the manufacture of carbontetrachloride
    1.
    发明授权
    Process for the manufacture of carbontetrachloride 失效
    碳化硅的制造工艺

    公开(公告)号：US3651157A

    公开(公告)日：1972-03-21

    申请号：US3651157D

    申请日：1968-10-08

    Applicant: HOECHST AG

    Inventor： KREKELER HANS ,  MEIDERT HELMUT ,  HORNIG LOTHAR

    IPC: C07C17/361 ,  C07C19/041 ,  C07C17/00 ,  C07C17/24

    CPC classification number: C07C19/041 ,  C07C17/361

    Abstract: PROCESS FOR THE MANUFACTURE OF CARBON TETRACHLORIDE FROM BENZENE OR MIXTURES OF BENZENE AND CHLORINATED ALIPHATIC OR AROMATIC COMPOUNDS, OR CHLORINATED AROMATIC COMPOUNDS AND CHLORINE IN THE ABSENCE OF A CATALYST IN TWO REACTION STAGES AT TEMPERATURES WITHIN THE RANGE OF FROM 6* TO 400*C. IN THE FIRST, AND 400* TO 800*C. IN THE SECOND REACTION STAGE AND PRESSURES WITHIN THE RANGE OF FROM 20 TO 200 ATMOSPHERES GAGE, THE CHLORINE BEING USED IN AN EXCESS AMOUNT OF UP TO 300% AND THE STARTING PRODUCTS BEING INTRODUCED TOGETHER WITH THE CHLORINE ADVANTAGEOUSLY CONTINUOUSLY IN AMOUNTS OF 0.2 TO 4 MOLES PER LITER OF REACTOR VOLUME AND PER HOUR INTO A CORROSIONRESISTANT REACTOR.

    Process for the manufacture of carbon tetrachloride
    3.
    发明授权
    Process for the manufacture of carbon tetrachloride 失效
    碳青霉烯制造工艺

    公开(公告)号：US3676508A

    公开(公告)日：1972-07-11

    申请号：US3676508D

    申请日：1970-01-21

    Applicant: HORNIG ANNELIESE ,  HOECHST AG

    Inventor： KREKELER HANS ,  MEIDERT HELMUT ,  RIEMENSCHNEIDER WILHELM ,  HORNIG LOTHAR HEINZ

    IPC: C07C19/041 ,  C07C17/00 ,  C07C17/361 ,  C07C67/00 ,  C07C19/06

    CPC classification number: C07C17/361 ,  C07C19/041

    Abstract: In the process for the manufacture of carbon tetrachloride from benzene, mixtures of benzene and chlorinated aliphatic or aromatic compounds, or chlorinated aromatic compounds, with chlorine in an excess amount of up to 300 percent, in the absence of catalysts in the gaseous phase in two reaction stages at a temperature in the first stage of from 6* to 400* C. and in the second stage of from 400* to 800* C. the space-time-yield is considerably increased by operating in both reaction stages under a pressure in the range of from 200 to 700 atmospheres. The reaction is carried out in a corrosion resistant reactor in continuous manner using 0.2 to 4 moles of organic compound or compounds per liter of reaction space per second.

    Abstract translation: 在从苯中制造四氯化碳的过程中，苯和氯化脂族或芳族化合物或氯化芳族化合物的混合物，氯过量高达300％，在气相中不存在催化剂的情况下 在第一阶段的温度为6℃至400℃，第二阶段为400℃至800℃的反应阶段，通过在压力下在两个反应阶段中操作来显着提高空时收率 在200至700个大气压的范围内。 反应在耐腐蚀反应器中以连续的方式使用0.2至4摩尔有机化合物或化合物/升每秒反应空间进行。

    PROCESS FOR THE ISOLATION OF CRYSTALLINE 1,3- CYCLOHEXANEDIONE
    10.
    发明专利
    PROCESS FOR THE ISOLATION OF CRYSTALLINE 1,3- CYCLOHEXANEDIONE 未知

    公开(公告)号：CA1200558A

    公开(公告)日：1986-02-11

    申请号：CA438203

    申请日：1983-10-03

    Applicant: HOECHST AG

    Inventor： LITTERER HEINZ ,  MEIDERT HELMUT

    IPC: C07C45/45 ,  C07C45/81 ,  C07C45/83 ,  C07C49/403 ,  C07D309/32 ,  C07D315/00

    Abstract: The invention provides a process for the isolation of crystalline 1,3-cyclohexanedione from the crude product formed in the catalytic gaseous phase cyclization of 5-oxohexanoic acid. Before or directly after condensation an auxiliary component consisting of at least one compound selected from the group consisting of cyclic hydrocarbons, chlorinated aliphatic hydrocarbons and monoethers is added to the crude product, subsequently the mixture of crude product and auxiliary component is distilled under normal or reduced pressure until the reaction water is removed and the residual content of auxiliary component in the remaining concentrate has attained a defined value, and the precipitated crystalline 1,3-cyclohexanedione is filtered off. Alternatively, the auxiliary component added may be distilled off substantially completely. In this case, either the same or another of the compounds or compound mixtures indicated as auxiliary component must be added subsequently to the remaining concentrate interspersed with crystals in order to obtain a substantially complete precipitation of the 1,3-cyclohexanedione in the form of crystals and formation of a filterable crystal pulp. Alternatively, the crude product may be heated after condensation and the crude crystallized product obtained optionally after cooling be mixed with the auxiliary component. The further work-up is as described above.

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