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    Urea derivatives and mixtures containing them
    72.
    发明专利
    Urea derivatives and mixtures containing them 未知

    公开(公告)号：GB1086527A

    公开(公告)日：1967-10-11

    申请号：GB286865

    申请日：1965-01-22

    Applicant: BASF AG

    Inventor： RAFF PAUL ,  SCHUSTER LUDWIG ,  FISCHER ADOLF ,  SCHEUERER GUENTHER ,  STEINBRUNN GUSTAV

    IPC: C07C275/26

    Abstract: The invention relates to compounds of the general formula in which R is a methyl group, methoxy group or butinyl group. The compounds may be prepared by reaction of appropriate isocyanates with the appropriate amines in inert or aqueous solvents, or from the amines with the appropriate carbamic acid derivatives dissolved in a hydrocarbon and in the presence of an acid-binding agent or a catalyst. Appropriate amines are obtained as mixtures of isomers by reacting 4,5,6,7,8,9-hexahydro-4,7-methanoindene with hydrocyanic acid in the presence of sulphuric acid and subsequent hydrolysis of the resultant formamide.ALSO:Herbicidal compositions comprise as active ingredient compounds of the general formula in which R is a methyl, methoxy or butinyl group, together with solid or liquid carriers. Other herbicidal compounds, e.g. urea derivatives, triazines, pyridazone derivatives, carbamates, thio carbamates, uracil derivatives or borates may also be included.

    Production of dihydrodicyclopentadienylamine
    73.
    发明专利
    Production of dihydrodicyclopentadienylamine 未知

    公开(公告)号：GB1078467A

    公开(公告)日：1967-08-09

    申请号：GB4709764

    申请日：1964-11-19

    Applicant: BASF AG

    Inventor： SCHUSTER LUDWIG ,  RAFF PAUL

    IPC: C07C233/02

    Abstract: Dihydrocyclopentadienylamine is prepared by reacting dicyclopentadiene with hydrocyanic acid in the presence of concentrated sulphuric acid at a temperature of from -5 DEG C. to 35 DEG C., the hydrocyanic acid being used in a molar amount of at least three times that of the dicyclopentadiene and the sulphuric acid in an excess of up to 3 moles based on the dicyclopentadiene, and saponifying the resultant N-dihydrodicyclopentadienyl formamide by a conventional method.

    Purified laurolactam
    76.
    发明专利
    Purified laurolactam 未知

    公开(公告)号：GB1048233A

    公开(公告)日：1966-11-16

    申请号：GB774064

    申请日：1964-02-25

    Applicant: BASF AG

    Inventor： RAFF PAUL ,  DOERFEL HELMUT

    IPC: C07D201/16 ,  C08G69/14

    Abstract: Laurolactam, the lactam of o -amino-lauric acid, is recovered from solutions of laurolactam in mineral acids, from suspensions of laurolatam in acid, neutral or alkaline aqueous solutions, or from solutions of salts which also contain laurolactam in solution or suspension, by mixing the lactam-containing mixture with an organic solvent or solvent mixture as defined below, adding water if desired, separating the two layers which form, treating the solution of laurolactam in the organic solvent optionally with aqueous alkalis and then with water removing the extraction agent from the laurolactam by distillation, and then immediately distilling the lactam melt thus obtained under subatmospheric pressure to purify it. The organic solvent or solvent mixture is not miscible with water, boils at a temperature between 100 DEG C. and 150 DEG C. at atmospheric pressure, and forms stable homogeneous liquid binary mixtures with laurolactam in the temperature range above the boiling point of the solvent or solvent mixture up to the melting point of laurolactam. Specified solvents are alkyl-substituted benzenes containing 7 or 8 carbon atoms, cycloalkanes or alkyl-substituted cycloalkanes containing 8 carbon atoms and 6- to 8-membered rings, and chlorinated hydrocarbons. Preferably, the extraction agent is removed from the laurolactam by a two-stage distillation, a liquid binary mixture containing preferably more than 50% by weight of laurolactam being obtained in the first stage, this mixture is, if desired, kept under protective conditions at a temperature in the range between 84 DEG C. and 154 DEG C., and the mixture is separated completely into laurolactam melt and extraction agent at a temperature above the melting point of laurolactam in the second distillation stage. When the initial material has been obtained via a Beckmann rearrangement it is preferred to add a neutralizing agent at the same time as the extraction agent. Examples are given.

    79.
    发明专利
    未知

    公开(公告)号：FR1377384A

    公开(公告)日：1964-11-06

    申请号：FR946178

    申请日：1963-08-30

    Applicant: BASF AG

    Inventor： DOERFEL HELMUT ,  RAFF PAUL

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