A water-based pesticidal suspension comprising
(a) a liquid or semi-solid pyrethroid insecticide which is distributed over and/or adsorbed upon a finely-divided solid carrier in a weight ratio of carrier to pyrethroid insecticide in the range 1:1 to 100:1;
[b) water in which is suspended the carrier having the pyrethroid insecticide distributed thereover and/or adsorbed thereon;
(c) a dispersing agent of the non-ionic and/or anionic type to disperse the finely-divided solid carrier in the water, the dispersing agent being present in a concentration range of 5 to 200 grammes per litre of the suspension; and
(d) a structuring agent in a concentration range of 0.1 to 30.0 grammes per litre of suspension to stabilise the suspension and substantially prevent settling out of the finely-divided carrier;
and wherein the pyrethroid insecticide is present in a concentration of 1 to 250 grammes per litre of suspension. Such suspensions have the advantage of conventional suspension concentrates and also possess improved pesticidal properties.
一种
水基杀虫悬浮剂,包括
(a) 液体或半固体拟
除虫菊酯杀虫剂,该
杀虫剂分布在和/或吸附在细小的固 体载体上,载体与拟
除虫菊酯杀虫剂的重量比为 1:1 至 100:1;
(b)
水,
水中悬浮着分布和/或吸附有拟
除虫菊酯杀虫剂的载体;
(c) 非离子型和/或阴离子型分散剂,用于将细粒固体载体分散在
水中,分散剂的 浓度范围为每公升悬浮液 5 至 200 克;以及
(d) 结构剂,浓度范围为每公升悬浮液 0.1 至 30.0 克,用于稳定悬浮液,并在很大程度上 防止细粒载体沉淀;
其中拟
除虫菊酯杀虫剂的浓度为每升悬浮液 1 至 250 克。这种悬浮剂具有传统悬浮浓缩剂的优点,同时还具有更好的杀虫性能。