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    Preparation of nitroalcohol
    25.
    发明授权
    Preparation of nitroalcohol 失效
    硝基醇的制备

    公开(公告)号：US3560575A

    公开(公告)日：1971-02-02

    申请号：US3560575D

    申请日：1966-09-07

    Applicant: COMMERCIAL SOLVENTS CORP

    Inventor： TINDALL JOHN B

    IPC: C07C205/15 ,  C07C79/18 ,  C07C91/06

    CPC classification number: C07C201/12 ,  C07C205/15

    Abstract: NITROALCOHOLS ARE PRODUCED BY REACTING A NITROPARAFFIN WITH A STOICHIOMETRIC EXCESS OF FORMALDEHYDE, SAID EXCESS BEING FROM ABOUT 5 TO 60% EQUIVALENTS, DEIONIZING THE REACTION PRODUCT THEREOF TO REMOVE THE METAL ION OF SAID CATALYST FRACTIONATING SAID DEIONIZED REACTION PRODUCT WITH METHANOL IN THE PRESENCE OF A MINERAL ACID, TOLUENE SULFONIC ACID OR CATION EXCHANGE RESIN IN AN AMOUNT SUFFICIENT TO CATALYZE THE REACTION OF THE EXCESS OF THE FORMALDEHYDE AND METHANOL, THE METHANOL BEING USED IN AN AMOUNT SUFFICIENT TO REACT WITH THE ALDEHYDE REMAINING IN SAID FRACTIONATED PRODUCT, AND REMOVING THE REACTION PRODUCT OF SAID FORMALDEHYDE AND METHANOL FROM THE RESULTING MIXTURE.

    Separation of nitroalkanes and alkanes by codistilling with methanol
    28.
    发明授权
    Separation of nitroalkanes and alkanes by codistilling with methanol 失效
    通过用甲醇进行CODISTILLING分离硝基和烷烃

    公开(公告)号：US3480516A

    公开(公告)日：1969-11-25

    申请号：US3480516D

    申请日：1968-08-26

    Applicant: COMMERCIAL SOLVENTS CORP

    Inventor： TINDALL JOHN B

    IPC: C07C7/06 ,  C07C201/16 ,  B01D3/14 ,  C07C79/14

    CPC classification number: C07C205/02 ,  C07C7/06 ,  C07C201/16 ,  C07C9/14

    Abstract: 1,218,706. Separation of nitroalkanes and alkanes. COMMERCIAL SOLVENTS CORP. 9 July, 1969 [26 Aug., 1968], No. 34622/69. Heading C2C. [Also in Division C5] A mixture of one or more nitroalkanes having 2 to 4 carbon atoms and one or more alkanes (including cycloalkanes) having 5 to 9 carbon atoms is separated by (a) adding methanol to the mixture in an amount sufficient to initiate co-distillation with the alkane or alkanes when said mixture is heated, (b) heating and codistilling the alkane-methanol thereby effecting separation of the alkane or alkanes and producing a residue of nitroalkane or nitroalkanes and methanol, and (c) separating the methanol from the nitroalkane or nitroalkanes. The alkanemethanol distillate may be condensed into two layers, and the lower methanol layer returned to the distillation unit until alkane no longer comes over in the distillate. The upper alkane is suitable for re-use without further treatment or it can be freed from methanol by distillation or washing with water.

    Process for purification of nitromethane
    29.
    发明授权
    Process for purification of nitromethane 失效
    纯化硝基甲烷的方法

    公开(公告)号：US3211630A

    公开(公告)日：1965-10-12

    申请号：US37108564

    申请日：1964-05-28

    Applicant: COMMERCIAL SOLVENTS CORP

    Inventor： TINDALL JOHN B

    IPC: C07C201/16

    CPC classification number: C07C201/16 ,  C07C205/02

    Abstract: Nitromethane is recovered from mixtures with higher nitroalkanes by adding to said mixtures sufficient water and C6- 8 alkane or cycloalkane to form an azeotropic mixture with said nitromethane, and heating the mixture to distil off said azeotrope. The said azeotrope condenses into three layers, the lowest of which contains the nitromethane with minor amounts of water and alkane. The water and alkane may be removed by further distillation up to 101.5 DEG C.

    Abstract translation: 通过向所述混合物中加入足够的水和C 6 -C 8烷烃或环烷烃以与所述硝基甲烷形成共沸混合物，并加热混合物以蒸馏所述共沸物，从具有较高硝基烷烃的混合物中回收硝基甲烷。 所述共沸物冷凝成三层，其中最低含有少量水和烷烃的硝基甲烷。 水和烷烃可以通过进一步蒸馏除去至101.5℃。

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