Process for the preparation of stable aqueous suspensions of methyl
N-(2-benzimidzolyl)-carbamate
    2.
    发明授权
    Process for the preparation of stable aqueous suspensions of methyl N-(2-benzimidzolyl)-carbamate 失效
    制备N-(2-苯甲酰氨基甲酰基) - 氨基甲酸甲酯稳定含水悬浮液的方法

    公开(公告)号:US4486595A

    公开(公告)日:1984-12-04

    申请号:US543807

    申请日:1983-10-24

    IPC分类号: C07D235/32 A01N47/18 A01P3/00

    CPC分类号: A01N47/18

    摘要: The invention relates to a new process for the preparation of stable aqueous suspensions of methyl N-(2-benzimidazolyl)carbamate. According to the invention an aqueous solution of an addition salt of methyl N-(2-benzimidazolyl)carbamate and an inorganic acid, optionally containing an excess amount of acid is reacted with an aqueous potassium, sodium or ammonium hydroxide solution or ammonia gas, in the presence of a wetting, dispersing and antifoaming agent and optionally of a protecting colloid at a temperature of 50.degree. C. to 100.degree. C., and if desired, the suspension obtained is concentrated or diluted. The suspension prepared by this process can either be used directly or can be supplemented with further additive(s) conventionally used in the preparation of plant protecting agents.

    摘要翻译: 本发明涉及制备N-(2-苯并咪唑基)氨基甲酸甲酯稳定的水性悬浮液的新方法。 根据本发明,将N-(2-苯并咪唑基)氨基甲酸甲酯和无机酸的任选含有过量的酸的水溶液与氢氧化钾,氢氧化钠或氢氧化铵水溶液或氨气水溶液反应, 在50℃至100℃的温度下存在润湿剂,分散剂和消泡剂以及任选的保护胶体,如果需要,将所得悬浮液浓缩或稀释。 通过该方法制备的悬浮液可以直接使用或可以补充常规用于制备植物保护剂的另外的添加剂。