公开(公告)号：US20190160447A1

公开(公告)日：2019-05-30

申请号：US16306749

申请日：2017-06-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Lin Chen ,  Jie Gao ,  Qiongqiong Huang

IPC: B01J13/04 ,  C08L5/12 ,  B05D7/24

Abstract: A method for forming polymer microparticles is disclosed. The method comprises spraying a liquid comprising a thermally-gelling polymer from a first orifice of a nozzle into air to form gelled microparticles, and collecting the gelled microparticles with a collecting device. The nozzle is positioned to have a central axis of the first orifice at a tilt angle in a range from about 10 degrees to about 170 degrees relative to a direction of gravity. The collecting device comprises at least two collecting units at different distances from the first orifice of the nozzle in a horizontal direction perpendicular to the direction of gravity. Each of the collecting unit is loaded with a liquid collecting medium. A system for forming polymer microparticles is also disclosed.