PROBLEM TO BE SOLVED: To provide a hydrophobic substance-including particle in which the release amount of a hydrophobic substance is easily adjustable.SOLUTION: The hydrophobic substance-including particle 1 includes: a hydrophobic substance 6 and associated particles 2 including the hydrophobic substance 6. The associated particles 2 form an associated body 3 essentially consisting of an amphiphilic chain-like polymer 10 including a hydrophilic unit and a hydrophobic unit, and an amphiphilic endless polymer 20, and the associated body 3 forms an aggregate 4 in which a plurality of the associated bodies 3 are gathered at a prescribed temperature or above in an aqueous medium.COPYRIGHT: (C)2012,JPO&INPIT【課題】疎水性物質の放出量を簡便に調整可能な疎水性物質内包型粒子を提供する。【解決手段】本発明に係る疎水性物質内包型粒子1は、疎水性物質6と、疎水性物質6を内包する会合型粒子2とを備え、会合型粒子2は、親水性ユニットと疎水性ユニットを含む両親媒性鎖状ポリマー10及び両親媒性無端状ポリマー20を主成分とした会合体3を形成し、会合体3は、水系媒体中、所定の温度以上で、当該会合体3が複数集合した凝集体4を形成するものである。【選択図】図3
