22.
    发明专利
    未知

    公开(公告)号:DE1136529B

    公开(公告)日:1962-09-13

    申请号:DEB0057214

    申请日:1960-03-25

    Applicant: BASF AG

    Abstract: The invention comprises urea derivatives of the formula:- in which R and R1 each denotes hydrogen or a C1-4 alkyl or alkenyl group, or together form part of a heterocyclic ring which, apart from the nitrogen atom to which R and R1 are attached, contains no further nitrogen atom as a member of said ring, e.g. a morpholine, pyrrolidine or piperidine ring. The compounds are prepared either by reacting isoamyl isocyanate with a secondary amine of the formula HNRR1, or by reacting isoamylamine with a carbamyl chloride of the formula ClOC-NRR1.ALSO:A herbicidal composition comprises, as an active ingredient, a urea derivative of the formula in which R and R1 each denotes hydrogen or a C1-4 alkyl or alkenyl group, or together form part of a heterocyclic ring which, apart from the nitrogen atom to which R and R1 are attached, contains no further nitrogen atom as a member of said ring, together with a solid or liquid diluent such as water in conjunction with optional amounts of surface-active agents, organic solvents (e.g. methanol, isopropanol, isobutanol, xylene, toluene, cresol and cyclohexanone), talc, bentonite, pyrophyllite, diatomaceous earth silica gel and calcium nitrate.

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