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    Production of alkanolamines
    1.
    发明授权
    Production of alkanolamines 失效
    生产烷醇胺

    公开(公告)号：US3564057A

    公开(公告)日：1971-02-16

    申请号：US3564057D

    申请日：1968-10-07

    Applicant: COMMERCIAL SOLVENTS CORP

    Inventor： TINDALL JOHN B

    IPC: C07C85/10

    CPC classification number: C07C205/15

    Abstract: AN IMPROVED PROCESS FOR THE PRODUCTION OF PRIMARY ALKANOLAMINES BY THE REDUCTION OF NITROALKANOLS WHEREBY THE CONTENT OF N-ALKYLATED ALKANOLAMINES IS SUBSTANTIALLY REDUCED, BY EFFECTING THE REDUCTION STEP IN THE PRESENCE OF AMMONIA OR A SOLUBLE PRIMARY OR SECONDARY ALIPHATIC AMINE.

    Purification of nitroethane by azeotropic distillation with n-heptane or isooctane
    2.
    发明授权
    Purification of nitroethane by azeotropic distillation with n-heptane or isooctane 失效
    用N-异丙醇或ISOOCTANE通过亚硝酸盐蒸馏纯化硝基苯

    公开(公告)号：US3480517A

    公开(公告)日：1969-11-25

    申请号：US3480517D

    申请日：1968-08-26

    Applicant: COMMERCIAL SOLVENTS CORP

    Inventor： TINDALL JOHN B

    IPC: C07C201/16 ,  B01D3/36 ,  C07C79/14

    CPC classification number: C07C201/16 ,  C07C205/02

    Abstract: 1,219,738. Separation of nitroethane from other nitroalkanes. COMMERCIAL SOLVENTS CORP. 9 July, 1969 [26 Aug., 1968], No. 34621/69. Heading C2C. Nitroethane is separated from a mixture with one or more other nitroalkanes, including nitromethane and 2-nitropropane by (a) mixing the nitroalkane mixture with a saturated aliphatic hydrocarbon having 7 or 8 carbon atoms; (b) distilling the mixture to form a distillate consisting of an upper layer and a lower layer comprising nitroethane, nitromethane and the hydrocarbon; (c) returning the upper layer to the distillation step; and (d) redistilling the lower layer until separation of the nitromethane and the hydrocarbon has been effected, thereby producing, as a distillation residue, purified nitroethane. The aliphatic hydrocarbon is preferably n-heptane, 2,2,4-trimethylpentane or 2,3,4-trimethylpentane.

    Process for the production of tris (hydroxymethyl) aminomethane crystals
    3.
    发明授权
    Process for the production of tris (hydroxymethyl) aminomethane crystals 失效
    制备三（羟甲基）氨基甲烷晶体的方法

    公开(公告)号：US3338970A

    公开(公告)日：1967-08-29

    申请号：US34840164

    申请日：1964-03-02

    Applicant: COMMERCIAL SOLVENTS CORP

    Inventor： SCHMITZ FRED W ,  TINDALL JOHN B

    IPC: B01D9/00

    CPC classification number: B01D9/0018 ,  B01D9/0059

    Abstract: 1,050,586. Tris(hydroxymethyl)aminomethane. COMMERCIAL SOLVENTS CORPORATION. Feb. 3, 1965 [March 2, 1964], No. 4651/65. Heading C2C. Tris(hydroxymethyl)aminomethane (designated as T.A.) is produced by a process comprising crystallizing T.A. from an aqueous solution in a crystallizer, preferably a continuous evaporative type, separating the crystals from the mother liquor, evaporating the mother liquor to a melt of T.A., and solvent extracting the melt with a C 1 to C 5 alkanol, preferably with butanol, and preferably recirculating the solvent-extracted T.A. to the crystallizer. T.A. may be made by condensing nitromethane with formaldehyde and reducing the product. The detailed description relates to a continuous process which is described with reference to a flow-sheet (not shown).

    Abstract translation: 1,050,586。 三（羟甲基）氨基甲烷。 商业解决方案公司 1965年2月3日[1964年3月2日]，第4651/65号。 标题C2C。 通过包括使T.A.结晶的方法制备三（羟甲基）氨基甲烷（称为T.A.）。 从结晶器中的水溶液中，优选连续蒸发型，将晶体与母液分离，将母液蒸发成TA的熔体，并用C 1至C 5链烷醇，优选用丁醇萃取熔体， 并优选将溶剂萃取的TA再循环 结晶器。 T.A. 可以通过将硝基甲烷与甲醛缩合并还原产物来制备。 详细描述涉及参考流程图（未示出）描述的连续过程。

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