The present invention relates to a fine spherical particle having uniform molecular orientation having uniform molecular orientation, which is useful in fine chemical fields or electronic and information fields, such as a functional material and a medical material, using membrane formation of a bicephalic compound; a spherical microcapsule encapsulating a hydrophilic core substance; and a process for producing the same. The fine spherical particle can be produced by immersing a substrate having hydrophilicity in an aqueous solution of a salt of the compound represented by the following formula (1) to precipitate the fine particle under an acidic atmosphere.
wherein R represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; n is an integer of 8 to 20; and m is an integer of 1 to 3. The spherical microcapsule encapsulating a fine particle of a hydrophilic core substance is produced by immersing a substrate having hydrophilicity in an aqueous solution in which a metal salt of the compound represented by formula (1) and the hydrophilic core substance are dissolved; and allowing the aqueous solution to stand under an acidic atmosphere to precipitate the fine particle. The resulting fine spherical particle and the spherical microcapsule has a particle diameter of 0.01 to 100 µm.
本发明涉及一种具有均匀分子取向的细球形颗粒,它可用于精细化工领域或电子信息领域,如功能材料和医用材料,其方法是利用双头化合物的膜形成;封装亲
水性核心物质的球形微胶囊;以及生产该颗粒的工艺。将具有亲
水性的基质浸入下式(1)所代表的化合物的盐的
水溶液中,在酸性气氛下沉淀细颗粒,即可制得球形细颗粒。
将具有亲
水性的基质浸入溶解了式 (1) 所示化合物的
金属盐和亲
水性核心物质的
水溶液中,并使
水溶液在酸性环境下静置以沉淀细颗粒,即可制得包封了亲
水性核心物质细颗粒的球形微胶囊。所得细球形颗粒和球形微胶囊的颗粒直径为 0.01 至 100 微米。