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    Process for producing nitroparaffins
    384.
    发明授权
    Process for producing nitroparaffins 失效
    生产硝酸的方法

    公开(公告)号：US3780115A

    公开(公告)日：1973-12-18

    申请号：US3780115D

    申请日：1972-10-19

    Applicant: PAROISSE AZOTE ET PRODUITS CHI

    Inventor： LHONORE P ,  COHEN G ,  JACQUINOT B

    IPC: C07C67/00 ,  C07C201/00 ,  C07C201/14 ,  C07C205/02 ,  C07C79/04

    CPC classification number: C07C201/06 ,  Y02P20/582 ,  C07C205/02

    Abstract: THE INVENTION RELATES TO A PROCESS FOR THE PRODUCTION OF NITROPARAFFINS FROM HYDROCARBONS HIGHER THAN METHANE, BY NITRATION WITH NITROGEN PEROXIDE IN THE PRESENCE OF OXYGEN, INTRODUCED IN THE FORM OF AIR, WHEREIN THE NITRATION IS CARRIED OUT AT A PRESSURE WHICH IS BETWEEN 8 AND APPROXIMATELY 14 BARS, THE REACTANT GASES BEING PREHEATED UNDER THE REACTION PRESSURE AND INTRODUCED INTO THE REACTION ZONE BETWEEN 150 AND 330*C., THE GASEOUS EFFLUENTS ORIGINATING FROM THE NITRATION ZONE BEING SUBJECTED TO A RAPID COOLING OR QUENCHING.

    Nitrosation of phenols with nitrogen trioxide
    385.
    发明授权
    Nitrosation of phenols with nitrogen trioxide 失效
    酚类与三氧化硫的硝化反应

    公开(公告)号：US3770834A

    公开(公告)日：1973-11-06

    申请号：US3770834D

    申请日：1970-04-02

    Applicant: HERCULES INC

    Inventor： PROSSER T

    IPC: C07C201/00 ,  C07C205/22 ,  C07C207/04 ,  C07C39/02 ,  C07C79/22

    CPC classification number: C07C201/06 ,  C07C201/00 ,  C07C205/22 ,  C07C207/04

    Abstract: DISCLOSED IS A PROCESS FOR NITROSATING NITROSATABLE PHENOLIC MATERIAL. NITROGEN TRIOXIDE AND THE PHENOLIC MATERIAL ARE INTRODUCED SIMULTANEOUSLY AT SPECIFIC RATES INTO AN AGITATED, ACIDIC, AQUEOUS MEDIUM ESTABLIXHED AND MAINTAINED IN THE TEMPERATURE RANGE FROM ABOUT -20 TO ABOUT 20* C., AND HAVING AN INITIAL CONCENTRATION OF NITROUS ACID IN A RANGE FROM ANOUT 0 TO ABOUT 1% BY WEIGHT OF THE AQUEOUS MEDIUM. THE INITIAL PH OF THE AQUEOUS MEDIUM IS LESS THAN ABOUT 5, PREFERABLY ABOUT 1, AND COMPRISES WATER AND, DISSOLVED IN THE WATER, ACID MATERIAL SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE STRONG ACIDS LIKE NITRIC ACID AND SULFURIC ACID. THE RATE OF INTRODUCTION OF THE PHENOLIC MATERIAL INTO THE AQUEOUS MEDIUM IS PREFERABLY SUBSTANTIALLY THE RATE AT WHICH THE PHENOLIC MATERIAL IS NITROSATED IN THE AQUEOUS MEDIUM. THE RATE OF INTRODUCTION OF NITROGEN TRIOXIDE INTO THE AQUEOUS MEDIUM IS SUBSTANTIALLY AT THE RATE AT WHICH A SLIGHT STOICHIOMETRIC EXCESS, RELATIVE TO THE PHENOLIC MATERIAL BEING INTRODUCED INTO THE AQUEOUS MEDIUM OF NITROUS ACID IS ESTABLISHED AND MAINTAINED IN THE REACTION MEDIUM. AS REACTION TAKES PLACE NITROSATED PHENOLIC PRODUCT FORMS AND PRECIPITATES. PREFERABLY THE REACTION MIXTURE THAT RESULTS IS MAINTAINED WITH AGITATION IN THE TEMPERATURE RANGE UNTIL THE REACTION IS SUBSTANTIALLY COMPLETE, AND THEN THE PRECIPITATED NITROSATED PHENOLIC PRODUCT IS SEPARATED FROM THE REACTION MIXTURE.

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