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    Process for adiponitrile
    1.
    发明授权
    Process for adiponitrile 失效
    ADIPONITRILE的工艺

    公开(公告)号：US3839404A

    公开(公告)日：1974-10-01

    申请号：US33980073

    申请日：1973-03-09

    Applicant: SUN RESEARCH DEVELOPMENT

    Inventor： NORTON R

    IPC: C07C121/10

    CPC classification number: C07C255/00

    Abstract: 1. A PROCESS FOR THE PREPARATION OF ADIPONITRILE WHICH COMPRISES HEATING AN AQUEOUS SOLUTION OR DISPERSION OF DIAMMONIUM ADIPATE CONTAINING AT LEAST ABOUT 5 MOLES OF AMMONIA PER MOLE OF ADIPIC ACID AT A TEMPERATURE BETWEEN ABOUT 200*C. AND ABOUT 300*C. TO OBTAIN EQUILIBRIUM CONCENTRATIONS OF HYDROLYSIS INTERMEDIATES, FEEDING SAID AQUEOUS EQUILIBRIUM HYDROLYSIS PRODUCTS TO A DEHYDRATION CATALYST IN A FIXED OR FLUIDIZED BED AT A TEMPERATURE BETWEEN ABOUT 330*C. AND 380*C., AND SEPARATING ADIPONITRILE FROM THE CATALYST BED EFFLUENT.

    Purification of aromatic nitriles
    2.
    发明授权
    Purification of aromatic nitriles 失效
    芳香硝胺的纯化

    公开(公告)号：US3839402A

    公开(公告)日：1974-10-01

    申请号：US32994173

    申请日：1973-02-05

    Applicant: SUN RESEARCH DEVELOPMENT

    Inventor： NORTON R

    IPC: C07C255/51 ,  C07C20060101 ,  C07C67/00 ,  C07C253/00 ,  C07C255/49 ,  C07C121/54

    CPC classification number: C07C253/34 ,  C07C255/51

    Abstract: 1. IN THE PROCESS OF RECOVERING POLYNITRILE PRODUCTS FROM THE VAPOR PHASE AMMOXIDATION OF AROMATIC ALKYL-SUBSTITUTED HYDROCARBONS, THE IMPROVEMENT OF PROVIDING PURIFIED POLYNITRILE WHICH COMPRISES QUENCHING SAID AROMATIC AMMOXIDATION PRODUCTS IN ESSENTIALLY ANHYDROUS ACETIC ACID HELD AT A TEMPERATURE BETWEEN ABOUT 95*C. AND ABOUT 140*C. TO OBTAIN A SOLUTION OF POLYNITRILE IN ACETIC ACID, COOLING THE SOLUTION TO A TEMPERATURE NO LOWER THAN ABOUT 60*C., TO PRECIPITATE POLYNITRILE, AND SEPARATING SOLID POLYNITRILE PRODUCT.

    Hydrolysis of aromatic dinitriles
    4.
    发明授权
    Hydrolysis of aromatic dinitriles 失效
    芳香食品的水解

    公开(公告)号：US3781343A

    公开(公告)日：1973-12-25

    申请号：US3781343D

    申请日：1973-04-12

    Applicant: SUN RESEARCH DEVELOPMENT

    Inventor： NORTON R

    IPC: C07C51/00 ,  C07C51/08 ,  C07C63/00 ,  C07C63/15 ,  C07C67/00 ,  C07C63/26

    CPC classification number: C07C51/08 ,  C07C63/24

    Abstract: A PROCESS FOR THE PREPARATION OF AN AROMATIC ACID SUCH AS TEREPHTHALIC ACID BY HYDROLYSIS OF TEREPHTHALONITRILE WHICH COMPRISES SUBJECTING TEREPHTHALONITRILE TO AQUEOUS HYDROLYSIS IN A CLOSED REACTOR AT 200*C. TO 300*C. UNTIL A HYDROLYSIS EQUILBRIUM IS OBTAINED, VENTING THE CLOSED SYSTEM TO REMOVE MORE THAN 50% OF A VAILABLE, AMMONIA, ADJUSTING THE VENTER SYSTEM TO A MOLALITY OF TEREPHTHALATE FROM 1.5 TO 2.5, SATURATING THE SYSTEM WITH CARBON DIOXIDE, AND ISOLATING THE PRECITATED TERPHTHALIC ACID BY SEPARATION UNDER A PRESSURE OF ABOUT 50 TO ABOUT 900 P.S.I.G.

    Nitrile hydrolysis process
    6.
    发明授权
    Nitrile hydrolysis process 失效
    NITRILE水解过程

    公开(公告)号：US3839432A

    公开(公告)日：1974-10-01

    申请号：US38130473

    申请日：1973-07-20

    Applicant: SUN RESEARCH DEVELOPMENT

    Inventor： NORTON R

    IPC: C07C51/08 ,  C07C63/14 ,  C07C63/26 ,  C07C63/40

    CPC classification number: C07C51/08 ,  C07C63/26

    Abstract: 1. A PROCESS FOR THE HYDROLYSIS OF A PHTHALONITRILE OF THE BENZENE AND NAPHTHALENE SERIES TO THE CORRESPONDING ACID WHEREBY AN ACID PRODUCT LOW IN NITROGEN IMPURITIES IS OBTAINED, WHICH COMPRISES HYDROLYZING SAID NITRILE WITH AQUEOUS ACETIC ACID AT A TEMPERATURE OF FROM ABOUT 250* C. TO ABOUT 325*C., SAID AQUEOUS ACETIC ACID SOLUTION CONTAINING FROM ABOUT 5% BY WEIGHT TO ABOUT 40% BY WEIGHT OF ACETIC ACID AND WHEREIN THE MOLE RATIO OF ACETIC ACID USED PER MOLE OF NITRILE IS FROM ABOUT 2.0 TO ABOUT 4.0.

    Purification process for aromatic acids
    7.
    发明授权
    Purification process for aromatic acids 失效
    芳香酸的净化过程

    公开(公告)号：US3847977A

    公开(公告)日：1974-11-12

    申请号：US26380972

    申请日：1972-06-19

    Applicant: SUN RESEARCH DEVELOPMENT

    Inventor： NORTON R

    IPC: C07C63/04 ,  C07C51/00 ,  C07C51/48 ,  C07C63/14 ,  C07C63/33 ,  C07C63/34 ,  C07C67/00 ,  C07C51/42 ,  C07C63/36 ,  C07C63/38

    CPC classification number: C07C51/48

    Abstract: 1. A PROCESS FOR PURIFICATION OF AN AROMATIC ACID CONTAINING COLOR AND NITROGEN IMPURITIES SELECTED FROM HE GROUP OF POLY ACIDS OF THE BENZENES SERIES AND MONO- AND POLY ACIDS OF THE NAPHTHALENES SERIES AND OBTAINED BY THE HYDROLYSIS OF NITRILES, WHICH COMPRISES EXTRACTING SAID IMPURE ACID WITH A THREE PHASE HETEROGENEOUS SYSTEM CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF ACETIC ACID, A LIQUID AROMATIC HYDROCARBON HAVING FROM SIX TO NINE CARBON ATOMS, AND AROMATIC ACID; THE AQUEOUS ACETIC ACID SOLUTION CONTAINING FROM ABOUT 40% TO ABOUT 65% BY WEIGHT OF WATER, THE WEIGHT RATIO OF AQUEOUS EXTRACTANT SOLUTION TO AROMATIC HYDROCARBON BEING FROM ABOUT 3:75:1 TO ABOUT 20:1, FROM ABOUT 15% TO ABOUT 90% BY WEIGHT OF THE AROMATIC ACID BEING IN THE SOLID PHASE, AND SAID EXTRACTION BEING MADE TO OCCUR IN A CLOSED SYSTEM AT A TEMPERATURE OF BETWEEN ABOUT 200* AND ABOUT 250* C.

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