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    Urea derivatives and agents for controlling undesired plant growth
    21.
    发明专利
    Urea derivatives and agents for controlling undesired plant growth 未知

    公开(公告)号：GB901296A

    公开(公告)日：1962-07-18

    申请号：GB977961

    申请日：1961-03-17

    Applicant: BASF AG

    Inventor： FISCHER ADOLF ,  POMMER HORST ,  SCHEUERER GUENTER ,  STUMMEYER HERBERT

    IPC: C07D295/215

    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.

    Herbicidal mixtures containing half esters of substituted ureas, and a process for controlling unwnated vegetation with these half esters
    27.
    发明专利
    Herbicidal mixtures containing half esters of substituted ureas, and a process for controlling unwnated vegetation with these half esters 未知

    公开(公告)号：GB1074333A

    公开(公告)日：1967-07-05

    申请号：GB4169664

    申请日：1964-10-13

    Applicant: BASF AG

    Inventor： STEINBRUNN GUSTAV ,  FISCHER ADOLF ,  SCHEUERER GUENTER ,  STUMMYER HERBERT

    IPC: A01N47/28 ,  A01N47/30

    Abstract: The invention comprises reaction products (half-esters) of dicarboxylic or tetracarboxylic anhydrides and ureas of the formula where R is methyl, methoxy or isobutinyl, each X is hydrogen, halogen or C1- 4 alkyl and n is 1 or 2. Specified anhydrides are those of succinic, maleic, citraconic, glutaric, phthalic, pyromellitic, naphthalic and diphenic acids; and of hydrogenated, chlorinated and/or nitrated phthalic acids, chlorinated succinic acid, mono- and dichloromaleic acid, and chlorinated and/or nitrated naphthalic and diphenic acids. These compounds are herbicides (see Division A5).ALSO:Agents for controlling unwanted vegetation are reaction products of dicarboxylic or tetracarboxylic anhydrides with ureas of the formula where R is methyl, methoxy or isobutinyl, each X is hydrogen, halogen or C1-4 alkyl, and n is 1 or 2, (see Division C2), together with a liquid or solid carrier. The active compounds may be used in the form of salts. The compositions may also contain emulsifiers and/or dispersing agents, and other active ingredients such as urea derivatives, carbamates, halogenated fatty acids, triazines, uracils or boron and arsenic derivatives.

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