• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Solutions and formulations of pesticidal carbamates having a high carbamate content and which are stable in the long run, as during storage, and can be exposed to temperatures of from 0 DEG C. to 54 DEG C. without undergoing alterations, i.e., without forming precipitates, etc., are disclosed. The stable solutions or formulations comprise, besides the carbamates, a solvent A which can be DMF, DMA or a mixture of the two and a solvent B which is any solvent, or mixture of solvents, mixable with solvent A, with the exception of alcohols, acids and aliphatic hydrocarbons.
    公开号:SU1367835A3
    申请号:SU802953004
    申请日:1980-07-25
    公开日:1988-01-15
    发明作者:Дэл Моро Анаклето；Пинамонти Франко
    申请人:Монтэдисон С.П.А. (Фирма)；
    IPC主号:
    专利说明:

     O1
    This invention relates to chemical plant protection products and can be used in agriculture.
    The purpose of the invention is to increase the stability of the active substance selected from the group of 0- (3-methoxycarbamiyo phenyl) -M-tolylcarbamate (phenmedipham), N-methyl-0- (naphthyl-1) -carbamate (carbaril), N-methyl- H, 5-dimethyl-4-cyanomethylaminophenylcarbamate (M 10445) in solution.
    The invention is illustrated by the following examples.
    Example 1. Preparation of 3,5-dimethyl-4 (N-cyanomethylamino) -phenyl-N-methylcarbamate.
    8.4 g of sodium bicarbonate, 7.5 g of sodium iodide and 3.8 g of chloroacetonitrile dissolved in 5 ml of N, N-dimethyl formamide are introduced into a solution of 9.7 g of 3,5-dimethyl-4- aminophenyl-N-methylcarbamate in 30 ml of N, N-dimethylformamide. This mixture is maintained at 50 ° C. for 4 hours with vigorous stirring, after which it is cooled and filtered. The solution is poured into 100 ml of water and extracted three times with 100 ml of ethyl acetate.
    The combined organic extracts are washed with water, dehydrated with sodium sulfate and dried at 40 ° C and a pressure of 15 mm Hg. to give 11.5 solid residue.
    After crystallization of the crude product from benzene, 7.8 g of a crystalline white solid with mp. .
    Calculated,%: C, 61.79; H 6.48; N 18.01.
    C, H, 5N, 0.
    Found,%: C 61.58; H 6.69; N 17.72.
    Example2. 40 g of phenmedipham - methyl 3-m-tolyl-carbamoyloxyphenylcarbamate (herbicide) is dissolved in a mixture of 30 g of DMF and 30 g of xylene, with stirring for a few minutes and heating (endothermic process).
    50 g of the obtained clear solution is incubated for 14 days at, and 50 g at 0 ° C for 48 h.
    After heating and cooling the i-, the solutions do not change.
    The analysis of two samples, performed according to the method of those, shows that
    that in both cases no noticeable decomposition of the active substance occurs.
    EXAMPLE 3: 40 g of M 10445-methyl-3,5-dimethyl-4-cyanmethylaminophenylcarbamate (insecticide) is dissolved in a mixture of 30 g of DMF and 30 g of xylene, with stirring in for several minutes, heating, if necessary, since the process is end (ethermic.
    You get a clear solution, 50 g of which is maintained at 54 ° C for 14 days, and 50 g at 0 ° C for 48 h.
    After heating and cooling, the sample solutions do not change.
    An analysis of the two samples, performed by the TLC method, indicates that in both cases there is no noticeable decomposition of the ac-. tive substance.
    Example 4: 30 g of carbaryl-methyl-1-naphthylcarbamate (insecticide) is dissolved in a mixture of 40 g of DMF and 30 g of Solvesso 50 (a mixture based on dimethylethylbenzene and tetramethylbenzene), with stirring in for several minutes, heat if necessary, since the process is endothermic.
    50 g of the resulting solution is incubated for 14 days at 54 ° C, and 50 g - for 48 hours.
    After heating and cooling, the samples do not change.
    According to the procedures of Examples 2-4, the compositions listed in Table 2 are prepared. 2, and tested for stability.
    The deterioration of the properties of the active substance corresponds to the amount of the active substance that remains unchanged after accelerated tests for stability.
    In tab. 2 shows the results. comparative tests of compositions. As shown by the results of research when there is no deterioration.
    权利要求:
    Claims (1)
    [1]
    As can be seen from the table. 2 compositions containing only dimethylformamide or dimethylacetamide are less stable than proposed. Formula from shadows
    A pesticidal composition based on carbamic acid derivatives, comprising a solvent and an emulsifier.
    A torus, characterized in that, in order to increase the stability of the active substance, it contains 0- (3-methoxycarbaminophenyl) -H-tolyl-carbamate, or K-methyl-0- (naphthyl-1) -carbamate, or N-methyl -3,5-dimethyl-4-cyanomethylaminophenylcarbamate as active substance, dimethylformamide or dimethylacetamide as solvent, acidic phosphorylated polyoxyethylated nonylphenol or its mixture with calcium dodecylbenzenesulfonate and polyoxyethylenated sorbitanthanol. and additionally contains a co-solvent, in Selected from group:
    678354
    a) xylene or its mixture with acetophenone (1: 1), or amylacetate (1: 3.1:: 1), or dioctyl phthalate (1: 1, 1: 3), or cellosolve acetate (1: 1), b a fraction of Cd-C aromatic hydrocarbons, g with a boiling point of 180-210 ° C or its mixture with dioctyl phthalate (1: 1) or amyl acetate (1:
    ten
    15
    : 1), or cellosolve acetate (1: 1), c) cyclohexanone, acetophenone,
    amylacetate, cellozrvat acetate, dioctyl phthalate. with the following content
    components, wt.%:
    Active substance 20-40 Solvent7-40
    Emulsifier10
    Co-solvent 14-50
    Active substance composition, wt.%:
    Fenmedifam
    M 10445
    Kar Baril Solvent
    DMF
    DMA
    Xylene
    Cyclohexanone
    Shellsol AB
    Dioctyl phthalate
    Cellose olvacetate
    Acetophenone
    Amyl acetate surfactant
    20
    20
    20
    40 34 40
    25
    20 20 10 40 20 20 20 5050 -1010 15
    50
    30 16 20
    thirty
    Setrolen O
    Table 1
    20
    20
    40 34 40
    25
    thirty
    3.5 3.5
    residual substance, wt.%:
    Fenmedifam .M 10445 Carbaryl solvent DMF DMA. Xylene
    Cyclohexanone shelleol AB Dioctyl phthalate Cellosolve acetate Acetophenone Amyl acetate
    20
    33 40
    32
    ten
    ten
    50
    thirty
    38
    "
    Setralen O Rolfen 10 D
    "
    Continuation of table 1
    40 40
    40
    40
    ten
    thirty
    thirty
    thirty
    ten
    10 10
    20
    ten
    ten
    thirty
    thirty
    ten
    ten
    Agrol
    Worsening after vtserzhki at 54 C for 14 days,%
    1.2 2 1.2 1.1 1.3 1.6 1.4
    .
    1and (
    Setrolen O - sorbitanoleate - polyoxyethylate. Agrol - calcium dodecylbenzenesulfonate. Rolfen is an acidic phosphorylated polyoxyethylated nonylphenol.
    Active substance composition, May.%:
    Fenmedifam M 10445 Carbaryl Ras governor DMF DMA Xylol
    Cyclohexanone ShellSOL AB Dioctyl phthalate Cellosolve acetate Adetophenone Amyl acetate
    40 40
    ten
    10 10
    20 36 20 40
    30 40 32 304010
    10 10
    thirty
    14
    28
    ten
    thirty
    1367835
    8 Continuation of table 1
    Continued. one
    20 36 20 40
    10 10
    28
    thirty
    14
    thirty
    1.1 1.4 1.4 1.2 1.1
     Shellsol AB:. 180-210 ° C; composition,%: C, - 1, C, - 50-55; С „- - 20; C, 2 - 2, indans - 17; naphthalenes - the rest
    table 2
    20 20 20 20 40 40
    Worsening after losing at 54 ° C for 14 days.
    10.5 10.7 9.6 9.8 8.2 8.1 11.2 11 10.6
    1.5 1.3
    20 20 20
    70 80
    70 3.5
    10 3,5 3
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