发明名称 |
METHOD FOR PRODUCING EXPANDABLE POLYSTYRENE BEADS WITH EXPANDABLE SEED PARTICLES |
摘要 |
PURPOSE: A manufacturing method of expandable polystyrene particles is provided to efficiently re-polymerizing expandable particles containing a foaming agent generated at suspension polymerization of normal expandable polystyrene particles. CONSTITUTION: A manufacturing method of expandable polystyrene particles comprises: a step of forming aqueous dispersion selectively comprising expandable seed particles, dispersant, surfactant; a step of seed polymerization by continuously adding styrene-based monomer in which an initiator, additives are dissolved under pressing condition in order not to foam the expandable seed particles; and a step of obtaining expandable polystyrene particles by injecting a foaming agent after polymerization. The pressing condition is condition maintaining inner pressure of particles higher than external pressure above the softening point of the expandable polystyrene particles.
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申请公布号 |
KR20120068360(A) |
申请公布日期 |
2012.06.27 |
申请号 |
KR20100129956 |
申请日期 |
2010.12.17 |
申请人 |
KOREA KUMHO PETROCHEMICAL CO., LTD. |
发明人 |
LEE, JIN HEE;BANG, HAN BAE;LEE, HAE RI;KIM, JIN SUNG |
分类号 |
C08J9/18;C08F2/18;C08F12/08;C08K3/04 |
主分类号 |
C08J9/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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