Compositions comprising, in an aqueous medium,
(a) a water-soluble salt of glyphosate having water solubility such that the composition contains at least 50 g/l of glyphosate acid equivalent;
(b) simazine, and
(c) diuron as particulate solids substantially free from particles having sizes greater than 15 µm;
(d) a surfactant which is a non-ioinic block copolymer of propylene oxide and ethylene oxide, the central block of the molecule being poly(propylene oxide) and the end groups being poly(ethylene oxides), in an amount of from 2 to 15% of the combined weight of the simazine and diuron;
e) a surfactant which is an ethoxylated C₈₋₁₈ alkanoyl ester of sorbitan, in an amount of at least 40% of the combined weight of the simazine and diuron;
f) a surfactant which is an ethoxylated fatty amine, in an amount of from 3 to 15% of the combined weights of surfactants (e) and (f); and
(g) a water-soluble/water-dispersible thickener, in an amount such that the composition has a viscosity at 25°C within the range 900 to 3500 cps;
wherein the weight ratios of components (a) (expressed as glyphosate acid equivalent), (b) and (c) are from 1.0:0.4:0.5 to 1.0:3.0:3.5,
have excellent long term storage stability.
在
水介质中包含以下成分的组合物:
(a)
草甘膦的
水溶性盐,其
水溶性使该组合物含有至少 50 克/升的
草甘膦酸当量;
(b)
西玛津,以及
(c) 基本上不含粒径大于 15 微米的颗粒状固体
利谷隆;
(d) 一种表面活性剂,它是环氧
丙烷和
环氧乙烷的非环氧嵌段共聚物,分子的中心 嵌段是聚环氧
丙烷,末端基团是聚
环氧乙烷,用量为
西玛津和
利谷隆总重量的 2%至 15%;
e) 一种表面活性剂,它是
山梨醇的乙氧基化 C₈₋₁₈烷酰酯,其用量至少为
西玛津和双
脲总重量的 40%;
f) 乙氧基化脂肪胺表面活性剂,其用量为表面活性剂(e)和(f)总重量的 3%至 15%;以及
(g)
水溶性/
水分散性
增稠剂,其用量使该组合物在 25℃时的粘度在 900 至 3500 cps 范围内;
其中组分(a)(以
草甘膦酸当量表示)、(b)和(c)的重量比为 1.0:0.4:0.5 至 1.0:3.0:3.5、
具有极佳的长期储存稳定性。