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    METHOD FOR SEPARATING DICHLOROCUMENE ISOMER
    2.
    发明专利
    METHOD FOR SEPARATING DICHLOROCUMENE ISOMER 失效

    公开(公告)号：JPH01250330A

    公开(公告)日：1989-10-05

    申请号：JP33141588

    申请日：1988-12-27

    Applicant: TORAY INDUSTRIES

    Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: C07C25/02 ,  C07C17/00 ,  C07C17/38 ,  C07C17/389 ,  C07C67/00

    Abstract: PURPOSE:To adsorb and separate especially the 3,5-isomer, by treating a dichlorocumene isomer mixture with an adsorbent consisting of zeolite, such as faujasite, L or beta type, having a specific silica/alumina molar ratio and pore diameter. CONSTITUTION:The 3,5-isomer is separated from a dichlorocumene isomer mixture. In the process, zeolite (e.g., faujasite, L or beta type) having >=2 molar ratio of silica/alumina and 0.6-1.0nm pore diameter is used as an adsorbent to carry out adsorption at 50-250 deg.C under atmospheric pressure -40kg/cm G. Thereby, the aimed substance is efficiently obtained in high purity. The method for adsorption and separation may be carried out by either of methods for chromatographic separation and collection and using continuous a pseudo-moving bed. The present substance is useful as a synthetic intermediate for medicines, agricultural chemicals, dyes, etc.

    SEPARATION OF DICHLOROCUMENE ISOMER
    6.
    发明专利
    SEPARATION OF DICHLOROCUMENE ISOMER 失效

    公开(公告)号：JPH02229122A

    公开(公告)日：1990-09-11

    申请号：JP5091389

    申请日：1989-03-01

    Applicant: TORAY INDUSTRIES

    Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: B01D15/00 ,  B01D15/08 ,  C07C17/38 ,  C07C17/389 ,  C07C25/02

    Abstract: PURPOSE:To separate especially 3,5-isomor from a mixture of dichlorocumene isomers by using a zeolite having specific silica/alumina molar ratio and pore diameter as an adsorbent and xylene as a desorbent. CONSTITUTION:Especially 3,5-isomer is separated and recovered from a mixture of dichlorocumene isomers by using a zeolite having a silica/alumina molar ratio of >=2 (preferably 2-30) and a pore diameter of 0.6-1.0nm as an adsorbent and xylene as a desorbent. The separation operation is carried out preferably at 50-250 deg.C under atmospheric pressure - 40kg/cm G in liquid phase. The zeolite is preferably selected from faujasite-type zeolite. L-type zeolite and beta-type zeolite. The 3,5-isomer useful as an intermediate for pharmaceuticals, agricultural chemicals, dyes, etc., can be separated and recovered in high purity and efficiency by the present process.

    SEPARATION OF DICHLOROCUMENE ISOMER
    7.
    发明专利
    SEPARATION OF DICHLOROCUMENE ISOMER 失效

    公开(公告)号：JPH02178240A

    公开(公告)日：1990-07-11

    申请号：JP33141688

    申请日：1988-12-27

    Applicant: TORAY INDUSTRIES

    Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: C07C17/38 ,  C07C17/389 ,  C07C25/02

    Abstract: PURPOSE:To efficiently absorb and separate a desired dichlorocumene isomer from a dichlorocumene isomer mixture using a specific zeolite as a absorbing agent and simultaneously using a halogenated alkylbenzene, etc., as a desorbing agent. CONSTITUTION:When a desired dichlorocumene isomer, especially 3,5- dichlorocumene useful as an intermediate for agricultural chemical, medicine, dye, etc., is absorbed and separated, a zeolite having >=2, preferably 2-30 silica/ alumina ratio and 0.6-1.0nm pore size, especially one or more kinds of compounds selected from faujasite type zeolite, L type zeolite and beta type zeolite are used as absorbing agent and simultaneously one or more kinds of compounds are used as desorbing agents to industrially and advantageously separate the aimed isomer.

    SEPARATION OF BROMODICHLOROBENZENE ISOMER
    8.
    发明专利
    SEPARATION OF BROMODICHLOROBENZENE ISOMER 失效

    公开(公告)号：JPH01213243A

    公开(公告)日：1989-08-28

    申请号：JP3825088

    申请日：1988-02-19

    Applicant: TORAY INDUSTRIES

    Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: B01D15/00 ,  B01J20/18 ,  B01J20/20 ,  B01J20/281 ,  C07C17/00 ,  C07C17/38 ,  C07C17/389 ,  C07C25/02 ,  C07C67/00

    Abstract: PURPOSE:To separate and recover a specific bromodichlorobenzene isomer, especially 1-bromo-3,5-dichlorobenzene from a mixture of bromodichlorobenzene isomers, in high purity and efficiency, by using a zeolite as an adsorbent. CONSTITUTION:A specific bromodichlorobenzene isomer, especially 1-bromo-3,5- dichlorobenzene useful as an intermediate raw material for agricultural chemicals, dyes, pharmaceuticals, etc., is separated from a mixture of bromodichlorobenzene isomers containing 1-bromo-3,5-dichlorobenzene, 1- bromo-2,4-dichlorobenzene, 1-bromo-2,6-dichlorobenzene, 1-bromo-2,5- dichlorobenzene, etc., by using a zeolite (especially a faujasite zeolite containing cations selected from metallic ions of group IA, IB and IIA of the periodic table and proton) as an adsorbent.

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