申请人:——
公开号:US20040166165A1
公开(公告)日:2004-08-26
A particulate composition comprising particles which consist of a shell wall surrounding a hydrophilic core, wherein the shell wall is formed from a polymeric coacervate and wherein the particles comprise a polymeric amphipathic stabiliser. Also claimed is a process of producing a particulate composition comprising particles which consist of a shell wall surrounding a hydrophilic core, comprising the steps of a) forming an aqueous liquid that contains a wall building material that is capable of forming the shell wall by coacervation, b) dispersing the aqueous liquid into a water immiscible liquid, which comprises a stabilising substance to form a dispersion that comprises aqueous droplets dispersed in a continuous phase of water immiscible liquid, c) subjecting the dispersion to coacervation conditions, such that the wall building material coacervates at the surface of the aqueous doplets, characterised in that the stabilising substance comprises a polymeric amphipathic stabiliser. Preferably the particulate composition obtainable by the process contains an active ingredient and is used in a detergent composition. The active ingredient preferably comprises any of detergency building ingredients, a buffering system and/or a sequesterant and/or detergent builder. Citric acid is a particularly preferred active ingredient.
一种微粒组合物,包括围绕亲水核心的壳壁组成的微粒,其中壳壁由聚合 共凝胶形成,微粒包括聚合两性稳定剂。还要求得到一种生产微粒组合物的工艺,该组合物包括围绕亲水芯的壳壁的微粒,包括以下步骤:a) 形成一种含水液体,该液体含有一种可通过共凝结形成壳壁的建壁材料;b) 将该含水液体分散到一种不溶于水的液体中、c) 将分散液置于共凝结条件下,使壁材在水性液滴表面共凝结,其特征在于,稳定物质包括高分子两性稳定剂。通过该工艺获得的颗粒组合物最好含有活性成分,并用于洗涤剂组合物中。活性成分最好包括任何一种增洁成分、缓冲系统和/或固着剂和/或增洁剂。柠檬酸是一种特别优选的活性成分。