Title:
METHOD FOR PREPARING POLYMER MICROPARTICLES BY SPRAY PROCESS
Document Type and Number:
WIPO Patent Application WO/2014/129773
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing polymer microparticles by a spray process, wherein a polymer solution obtained by dissolving a polyester-based polymer in ethylene carbonate (hereinafter, referred to as "EC"), which is a solvent, is sprayed at a low temperature hydrocarbon or alcohol solution, thereby preparing frozen EC/polymer microparticles, the frozen EC/polymer microparticles are dissolved in a salt aqueous solution, thereby dissolving and removing EC, and the residual EC in water is removed by washing.
Inventors:
KIM GUN POONG (KR)
Application Number:
PCT/KR2014/001254
Publication Date:
August 28, 2014
Filing Date:
February 17, 2014
Export Citation:
Assignee:
VAIM CO LTD (KR)
International Classes:
C08J3/12; C08G63/08; C08G63/78; C08L101/16
Foreign References:
| KR20100131244A | 2010-12-15 | |||
| KR20010002589A | 2001-01-15 | |||
| KR20120117585A | 2012-10-24 | |||
| JP2005002302A | 2005-01-06 |
Attorney, Agent or Firm:
CHO, Chul Hyun et al. (KR)
조철현 (KR)
조철현 (KR)
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