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    Preparation of dihydronaphthalene compounds
    2.
    发明授权
    Preparation of dihydronaphthalene compounds 失效
    二氢化萘化合物的制备

    公开(公告)号：US3558728A

    公开(公告)日：1971-01-26

    申请号：US3558728D

    申请日：1967-08-18

    Applicant: NAT DISTILLERS CHEM CORP

    Inventor： WATSON LLOYD M ,  BIRCHALL WILLIAM R

    IPC: C07C5/10 ,  C07C5/11

    CPC classification number: C07C5/10 ,  C07C5/11 ,  C07C2602/10 ,  C07C13/48

    Abstract: A PROCESS IS PROVIDED FOR THE HYDROGENATION OF AROMATIC HYDROCARBONS HAVING A NAPHTHALENE NUCLEUS, USING METALLIC SODIUM AND A LOWER ALIPHATIC ALCOHOL AS THE SOURCE OF HYDROGEN, EMPLOYING SODIUM WITH AN AVERAGE PARTICLE SIZE WITHIN THE RANGE FROM ABOUT 0.5 TO ABOUT 50 MICRONS, DISPERSED IN AN INERT DILUENT. A PROCESS IS ALSO PROVIDED FOR THE PREPARATION OF ALFIN POLYMERS BY POLYMERIZATION OF AN UNSATURATED ORGANIC COMPOUND IN THE PRESENCE OF AN ALFIN CATALYST, EMPLOYING AS THE MOLECULAR WEIGHT MODIFIER THE CRUDE DIHYDRONAPHTHALENE DISSOLVED IN AN INERT DILUENT THAT IS OBTAINED IN THIS BY HYDROGENATION.

    Apparatus for preparing dispersions of finely-divided alkali metal
    3.
    发明授权
    Apparatus for preparing dispersions of finely-divided alkali metal 失效
    用于制备精细分解的碱金属的装置

    公开(公告)号：US3677477A

    公开(公告)日：1972-07-18

    申请号：US3677477D

    申请日：1970-06-01

    Applicant: NAT DISTILLERS CHEM CORP

    Inventor： WATSON LLOYD M ,  BIRCHALL WILLIAM R

    IPC: B01F13/10 ,  B22F9/06 ,  B02C11/06

    CPC classification number: B22F9/06 ,  B01F13/1027

    Abstract: Apparatus for preparing dispersions of finely divided alkali metal substantially uniform in alkali metal concentration and having a narrow particle size below a predetermined median, said apparatus comprising a mixing tank divided by a vertically disposed baffle into a mixing zone and a substantially smaller quiescent, settling zone. Molten sodium feed and a dispersing aid mixture is agitated within said mixing zone in an inert gas blanket and alkali metal particles gravitate through the settling zone to the bottom of the mixing tank at which point the mixture containing said particles is drawn off in a continuous operation and passed to an homogenizer providing a high shear dispersion zone wherein the metallic particles are reduced in size and the mixture is returned to the mixing tank. Through repeated recirculation, such metallic particles as become reduced in size to the predetermined median size desired rise to the top of the quiescent, settling zone at which point the desired uniform dispersion containing only fine metallic particles within a closely controlled range is withdrawn.

    Abstract translation: 用于制备碱金属浓度基本上均匀且具有低于预定中值的窄粒径的细分碱金属的分散体的装置，所述装置包括由垂直设置的挡板分成混合区和基本上较小的静止沉降区的混合槽 。 熔融钠原料和分散助剂混合物在惰性气体保护层内在所述混合区内搅动，碱金属颗粒通过沉降区引入混合罐的底部，此时将含有所述颗粒的混合物在连续操作中抽出 并送到提供高剪切分散区的均化器，其中金属颗粒的尺寸减小，混合物返回到混合槽中。 通过反复再循环，将所需的尺寸减小到预定中值的金属颗粒上升到静止沉降区的顶部，此时仅在精细控制范围内仅含有精细金属颗粒的均匀分散体被取出。

    Continuous process for preparing alkali metal dispersions and apparatus
    8.
    发明授权
    Continuous process for preparing alkali metal dispersions and apparatus 失效
    用于制备碱性金属分散体和装置的连续方法

    公开(公告)号：US3580862A

    公开(公告)日：1971-05-25

    申请号：US3580862D

    申请日：1967-08-18

    Applicant: NAT DISTILLERS CHEM CORP

    Inventor： WATSON LLOYD M ,  BIRCHALL WILLIAM R

    IPC: B01F3/08 ,  B01F3/12 ,  B01F17/00 ,  B01J13/00 ,  B01J23/04 ,  B22F9/06

    CPC classification number: B01F3/0853 ,  B01F3/1214 ,  B01F17/00 ,  B01F2003/0892 ,  B01J13/0043 ,  B01J23/04 ,  B22F9/06

    Abstract: A PROCESS FOR PREPARING CONTINUOUSLY A DISPERSION IN AN INERT ORGANIC DILUENT OF A FINELY-DIVIDED ALKALI METAL, SUCH AS SODIUM, SUBSTANTIALLY UNIFORM IN PARTICLE SIZE AND ALKALI METAL CONCENTRATION IS PROVIDED WHEREIN A MOLTEN ALKALI METAL IS DISPERSED IN AN INERT ORGANIC DILUENT WITH A DISPERSING AID WHICH IS SOLUBLE IN THE INERT DILUENT, AND IF NECESSARY, A STABILIZING AGENT, BY SUBJECTING THE MOLTEN ALKALI METAL TO HIGH SHEAR FORCES, AND FORMING ALKALI METAL PARTICLES LESS THAN AND GREATER THAN A PREDETERMINED MEDIAN. THE COARSE PARTICLES OF MOLTEN ALKALI METAL AT OR ABOVE THE MEDIAN SIZE ARE ALLOWED TO SETTLE OUT, AND THE SUPERNATANT FINE PARTICLES OF MOLTEN ALKALI METAL AT OR BELOW THE MEDIAN SIZE ARE DRAWN OFF. THE COARSE PARTICLES ARE CONTINUOUSLY RETURNED TO THE ZONE OF HIGH SHEAR TO FURTHER REDUCE THEIR SIZE, AND ALKALI METAL IS CONTINUOUSLY ADDED TO THE ZONE, WHILE THE DISPERSION OF FINE PARTICLES OF ALKALI METAL HAVING A SIZE AT OR BELOW THE MEDIAN, AND SUBSTANTIALLY UNIFORM IN ALKALI METAL CONCENTRATION IS CONTINUOUSLY WITHDRAWN.

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