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    CONTINUOUS MANUFACTURE OF FORMAMIDE
    32.
    发明专利
    CONTINUOUS MANUFACTURE OF FORMAMIDE 未知

    公开(公告)号：CA1072118A

    公开(公告)日：1980-02-19

    申请号：CA277695

    申请日：1977-05-04

    Applicant: BASF AG

    Inventor： HOHENSCHUTZ HEINZ ,  STROHMEYER MAX ,  HERR MANFRED ,  KIEFER HANS

    IPC: C07C231/02 ,  C07C20060101 ,  C07C67/00 ,  C07C231/00 ,  C07C233/03 ,  C07C103/127

    Abstract: O.Z. 32,004 Formamide is manufactured continuously from methyl formate and gaseous ammonia. The reaction is carried out in a reactor at from 30 to 90.degree.C, from 5 to 20% by volume of the reactor output is drawn off continuously and fed to the formamide working-up stage, and the remainder of the reactor output is cooled, in an external circuit maintained by means of a pump, to from 25 to 60.degree.C and is mixed with the amount of fresh methyl formate required for steady-state operation, after which the appropriate amount of gaseous ammonia is introduced into the stream of liquid through a jet, by the sucking-jet principle, and the stream of liquid is recycled to the reactor.

    RECOVERY OF CARBOXYLIC ACIDS FROM OXO RESIDUES
    33.
    发明专利
    RECOVERY OF CARBOXYLIC ACIDS FROM OXO RESIDUES 未知

    公开(公告)号：CA1029398A

    公开(公告)日：1978-04-11

    申请号：CA210074

    申请日：1974-09-25

    Applicant: BASF AG

    Inventor： STROHMEYER MAX ,  HAGEN WERNER ,  HOHENSCHUTZ HEINZ

    IPC: C07C53/122 ,  C07C27/00 ,  C07C27/20 ,  C07C45/00 ,  C07C45/50 ,  C07C51/00 ,  C07C51/02 ,  C07C51/487 ,  C07C53/124 ,  C07C67/00

    Abstract: A process for isolating carboxylic acids from residues of the oxo reaction which are obtained as residues, on hydroformylation of ethylene or propylene, optionally after removing a part of the aldehydes produced, subsequent hydrogenation, treatment with aqueous alkali metal hydroxide solutions and subsequent distillation, wherein the residues are acidified with strong mineral acids to a pH of from 2-4, the acidified mixture not containing more than 5 parts by weight of water per part by weight of the carboxylic acids contained in the mixture, the organic phase is then separated off and the carboxylic acids are isolated therefrom by distillation at pressures below 150 mbar. The carboxylic acids obtained can be used as solvents or for the manufacture of esters.

    Production of p-Dialkylbenzenes.
    34.
    发明专利
    Production of p-Dialkylbenzenes. 未知

    公开(公告)号：GB1170123A

    公开(公告)日：1969-11-12

    申请号：GB890267

    申请日：1967-02-24

    Applicant: BASF AG

    Inventor： HILLER KARL-HEINZ ,  KINDLER HUBERT ,  SCHOLZ HEINRICH ,  STROHMEYER MAX

    IPC: C07C2/68

    Abstract: 1,170,123. p-Dialkylbenzenes. BADISCHE ANILIN- & SODA-FABRIK A.G. 24 Feb., 1967 [25 Feb., 1966], No. 8902/67. Heading C5E. p-Dialkylbenzenes are prepared by reacting alkylbenzenes or benzene with olefins in the presence of aluminium chloride at a temperature above 60‹ C. for a period of less than 3 minutes. C 2 -C 12 olefins are specified. The examples describe the reaction of cumene with propylene to yield p-diisopropylbenzene in admixture with the ortho- and meta-isomers, triisopropylbenzenes and tetraisopropylbenzenes.

    Stabilising monomeric acrylamide
    35.
    发明专利
    Stabilising monomeric acrylamide 未知

    公开(公告)号：GB1070202A

    公开(公告)日：1967-06-01

    申请号：GB3139664

    申请日：1964-08-04

    Applicant: BASF AG

    Inventor： STROHMEYER MAX ,  SCHOLZ HEINRICH

    IPC: C07C233/09

    Abstract: Acrylamide is stabilized by the incorporation of 0.001 to 0.3% by weight based on acrylamide of divalent manganese ions which may be added during or after the preparation of the acrylamide. Suitable manganese salts are the halides, phosphates, sulphates and carboxylate which may be added to the acrylamide as solutions in water or lower alkanols. Examples (1) describes the preparation of acrylamide from acrylonitrile and sulphuric acid in which manganous sulphate is added together with the nitrile to 85% sulphuric acid.

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