Process for synthesis of monodisperse micron crosslinked polystyrene copolymerization microsphere
Title：
Process for synthesis of monodisperse micron crosslinked polystyrene copolymerization microsphere
Application Number：
 200410074737
Application Date：
 2004/09/14
Announcement Date：
 2005/04/06
Pub. Date：
 2007/02/07
Publication Number：
 1603348
Announcement Number：
 1298751
Grant Date：
 2007-2-7
Granted Pub. Date：
 2007-2-7
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C08F 12/08, C08F 2/44, C08G 65/34
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Wang Juan, Liang Tongxiang, Yan Yinghui
Key Words：
 synthesis process, monodisperse, micron, crosslinked, polystyrene copolymerization microsphere
Abstract：
 This invention discloses a synthetic method of copolymerisation microballoon by monodisperse crosslinked polystyrene. It belongs to macromolecule material preparing technique field. Initiator sulphonazo biisobutyronitrile (AIBN) and crosslinking agent polyethylene glycol 200 dimethyl double acrylic acid ester (PEG200DMA) are dissolved in monomer ethenylbenzene, stabilizing agent polyethylene pyrrolidone (PVP) is dissolved in disperse medium ethanol, then crosslinked microballoon powder is got after dispersion polymerization, separation and baking. Stability of reaction system is improved by replace common crosslinking agent DVB by PEG20DMA, and monodisperse crosslinked microballoon is propitious to form by its assist stabilization. Uniform petal type monodisperse crosslinked effect microballoon is got after the crosslinking agent content up to 2.5% of the monodisperse and functional group of PEG200DMA is concentrated on microballoon surface. It can be widely used to catalyst carrier, medical treatment and medicine fields, biochemistry field and electronic message material field.
Claim：
Priority：
PCT：
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