外国特許コード F190009786
整理番号 S2017-0976-C0
掲載日 2019年5月7日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2018JP029810
国際公開番号 WO 2019039292
国際出願日 平成30年8月8日(2018.8.8)
国際公開日 平成31年2月28日(2019.2.28)
  • 特願2017-161323 (2017.8.24) JP
発明の概要(英語) The purpose of the present invention is to provide a method which is for producing capsules or beads, and which is highly versatile and achieves high production efficiency and high encapsulation efficiency of a substance to be encapsulated. The present invention pertains to a method for producing microcapsules or beads, the method being characterized by comprising: a step for placing, on a flat surface, polymer droplets or monomer droplets that contain a to-be-encapsulated substance and that have respective surfaces being coated with a plurality of solid particles; and a step for forming, in each of the capsules or beads, an outer shell part by solidifying, in a gaseous phase, the polymer droplets or the monomer droplets placed on the flat surface, and forming regions enclosed by the respective outer shell parts, wherein the regions have the substance encapsulated therein.
従来技術、競合技術の概要(英語) BACKGROUND ART
Agricultural, industrial, medical in each field, agricultural chemicals, adhesives, ink, heat storage material, containing the pharmaceuticals and the like having a diameter of several mm to several tens of micro-capsules or beads µm, improvements in handling, protection from the external environment of the material included in the release of the material and included in order to allow control of the used.
Such as a capsule containing the substance to be contained as a method, an interfacial polymerization method, in situ polymerization method, and dried in the liquid and the like are known. In the interfacial polymerization method, the hydrophobic monomer and a hydrophilic monomer, a polymerization reaction in an oil water interface thereof to form the particles. In addition, in situ polymerization method, monomers as the wall material and the material contained a stirred solution is dispersed in another liquid by, after the liquid droplets, and the polymerization of the monomer containing a capsule containing substance (for example, Patent Document 1, 2). In addition, in-liquid method, a solution obtained by dissolving or dispersing a material containing, in a dispersion medium of water or oil and, thereafter, by heating or decompression, such as a polymer wall material is dissolved in the solvent was removed to form the wall material (for example, Patent Document 3). However, an interfacial polymerization method, a combination of monomers is restricted. In addition, in situ polymerization method or the liquid and dried in the method, each material by stirring or the affinity between the stress load, a droplet containing a capsule wall material is solidified and before forming the capsule wall, the other material is contained in the liquid for the leakage, inclusion of efficiency is included in the material, in many cases, remain less than 40%.
In addition, the internal efficiency is high as the manufacturing method of the capsule, a spray dry method is known, in this method, the capsule is obtained, having a diameter of tens or more of the following limited µm, further, the volatile material contained in the efficiency is low.
To such a conventional method, is disclosed in Patent Document 4, the internal material is dispersed or dissolved polymer monomer droplets or droplets of water repellency or water repellency can be disposed on the flat material and microcapsules or beads and a method for producing, in the gas phase or by producing a capsule, the internal efficiency, the general versatility of the capsules or beads is provided a method of manufacturing.
However, the method described in Patent Document 4, significant improvement in efficiency is seen therein, the flat material can be disposed on the liquid droplet rolls might be combined for each other, droplets placed on the flat material at a high density is difficult, the production efficiency is lowered and is, further, the droplet is placed on the plate material, so that the droplets wet and spread over the liquid repellency must have, as a method for producing a low degree of freedom which is problematic.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • 発明者(英語)
  • TAKEI Takayuki
  • YOSHIDA Masahiro
  • OHZUNO Yoshihiro
  • HAYASE Gen