Invention Application
- Patent Title: POLYMER HOLLOW PARTICLE, A METHOD OF PREPARING THE SAME, AND COMPOSITE COMPRISING THE POLYMER HOLLOW PARTICLE
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Application No.: US15990690Application Date: 2018-05-28
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Publication No.: US20190016868A1Publication Date: 2019-01-17
- Inventor: Chong Min KOO , Soon Man HONG , Seung Sang HWANG , Kyung Youl BAEK , Hyunchul PARK , Seunggun YU , Hyesung CHO
- Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
- Priority: KR10-2017-0090379 20170717; KR10-2018-0052131 20180504
- Main IPC: C08J9/228
- IPC: C08J9/228 ; C08J9/18 ; C08J9/14 ; C08J9/236 ; B29C44/34 ; B29C44/44 ; C23C18/40

Abstract:
A method of preparing a polymer hollow particle, a low-specific gravity and monodispersed polymer hollow particle of various shapes prepared using the method, and a composite including the polymer hollow particle are provided. The method includes: a first step of providing, onto a substrate including a engraved pattern, at least one expandable particle comprising a foaming agent-containing expandable core and a thermoplastic polymer shell; a second step of removing an excess of the at least one expandable particle from a resulting product of the first step; a third step of expanding the at least one expandable particle in the engraved pattern of the substrate by thermally treating a resulting product of the second step; and a fourth step of separating, from the substrate, expanded hollow polymer particles which are a resulting product of the third step.
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