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    Production of nitroalkanols
    17.
    发明授权
    Production of nitroalkanols 失效
    硝基甘油的生产

    公开(公告)号：US3564062A

    公开(公告)日：1971-02-16

    申请号：US3564062D

    申请日：1968-03-15

    Applicant: COMMERCIAL SOLVENTS CORP

    Inventor： TINDALL JOHN B

    IPC: C07C201/12 ,  C07C205/15 ,  C07C79/18 ,  C07C89/00

    CPC classification number: C07C201/12 ,  C07C205/15

    Abstract: A PROCESS FOR THE PRODUCTION OF NITROALKANOLS CORRESPONDING TO THE FORMULA

    R-CH(-NO2)-CH2-OH

    WHERE R IS METHYL, ETHYL OR HYDROXYMETHYL, BY ADDING A MIXTURE OF A PRIMARY NITROALKANE AND FORMALDEHYDE, TO A SUSPENSION OF A CALCIUM OR BARIUM BASE, ADDING THE RESULTING MIXTURE TO AN AQUEOUS SOLUTION CONTAINING AN EXCESS OF CARBON DIOXIDE, SEPARATING THE PRECIPITATED CALCIUM OR BARIUM CARBONATE THEREBY PRODUCING THE NITROALKANOL.

    Separation of nitromethane and nitroethane by co-distilling with pentane
    18.
    发明授权
    Separation of nitromethane and nitroethane by co-distilling with pentane 失效
    通过与PENTANE共蒸馏分离硝基和硝基苯

    公开(公告)号：US3480518A

    公开(公告)日：1969-11-25

    申请号：US3480518D

    申请日：1968-08-26

    Applicant: COMMERCIAL SOLVENTS CORP

    Inventor： TINDALL JOHN B

    IPC: C07C201/16 ,  B01D3/34

    CPC classification number: C07C201/16 ,  C07C205/02

    Abstract: 1,218,337. Separation of nitromethane and nitroethane. COMMERCIAL SOLVENTS CORP. 9 July, 1969 [26 Aug., 1968], No. 34619/69. Heading C2C. Mixtures of nitromethane and nitroethane are separated by (a) adding n-pentane or isopentane or a mixture thereof to the nitromethane-nitroethane mixture in an amount sufficient to initiate co-distillation with the nitromethane when the mixture is heated, (b) heating the mixture to effect separation of the nitromethane by co-distillation of the nitromethane with the pentane thereby producing a distillate and a residue, (b) condensing the distillate thereby producing a condensate which divides into an upper layer and a lower layer, the lower layer comprising nitromethane substantially free from nitroethane, and separating said layers, and (d) continuing the heating to effect distillation of pentane from the residue, thereby producing as the final residue, nitroethane substantially free from nitromethane. The pentane is generally added in an amount of from 1 to 4 parts by weight per part of nitromethane.

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