发明名称 |
Process for the preparation of expandable vinylaromatic polymers |
摘要 |
Process for the preparation of expandable vinylaromatic polymers which comprises: a) polymerizing in aqueous suspension at last one vinylaromatic monomer in the presence of a suspending agent selected from inorganic salts of phosphoric acid; b) recovering the expandable beads from the reaction container; c) washing the beads thus obtained with an aqueous solution containing 0.005-2% by weight of a non-ionic surface-active agent; d) recovering the washed beads substantially without any inorganic salt of phosphoric acid, on the surface, and drying them in a stream of air.
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申请公布号 |
US2005222357(A1) |
申请公布日期 |
2005.10.06 |
申请号 |
US20040516935 |
申请日期 |
2004.12.14 |
申请人 |
POLIMERI EUROPA S.P.A. |
发明人 |
LANFREDI ROBERTO;ZAMPERLIN LORIS |
分类号 |
C08J9/20;(IPC1-7):C08F112/02 |
主分类号 |
C08J9/20 |
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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