A process for making hydrophobicized powders of micro- and/or nanocapsules involving the steps of: (a) providing an aqueous polymer solution containing at least one active ingredient and at least one hydrophilic polymer; (b) providing an oil component heated to a temperature above a gel point of the aqueous polymer solution; (c) dispersing (a) in (b) in the presence of a water-in-oil emulsifier to form a dispersion; (d) cooling the dispersion to a temperature below the gel point of the aqueous polymer solution to form micro- and/or nanocapsules containing the active ingredient encapsulated therein; (e) harvesting the micro- and/or nanocapsules from the dispersion; and (f) contacting the micro- and/or nanocapsules with an oil-absorbing auxiliary ingredient.
一种制造疏
水性微胶囊和/或纳米胶囊粉末的工艺,包括以下步骤(a) 提供含有至少一种活性成分和至少一种亲
水性
聚合物的
聚合物水溶液; (b) 提供加热到高于
聚合物水溶液凝胶点温度的油成分; (c) 在油包
水型
乳化剂存在下,将(a)分散到(b)中,形成分散液;(d) 将分散液冷至低于
聚合物水溶液凝胶点的温度,以形成封装有活性成分的微胶囊和/或纳米胶囊; (e) 从分散液中提取微胶囊和/或纳米胶囊;以及 (f) 将微胶囊和/或纳米胶囊与吸油辅助成分接触。