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发明申请
US20050222280A1 Beads of expandable vinylaromatic polymers and process for their preparation 审中-公开
可膨胀乙烯基芳族聚合物珠粒及其制备方法

Beads of expandable vinylaromatic polymers and process for their preparation
摘要：
Beads of expandable vinylaromatic polymers which comprise: a) a matrix obtained by polymerizing 50-100% by weight of one or more vinylaromatic monomers and 0-50% by weight of at least one copolymerizable monomer; b) 1-10% by weight, calculated with respect to the polymer (a), of an expanding agent englobed in the polymeric matrix; c) 2 ppm-2% by weight, calculated with respect to the polymer (a), of an anti-lumping additive, distributed an the surface of the beads, comprising Oxides of metals of groups IB, IIB and VIIB.
摘要（中）：

可膨胀乙烯基芳族聚合物珠粒，其包含：a）通过聚合50-100重量％的一种或多种乙烯基芳族单体和0-50％重量的至少一种可共聚单体获得的基体; b）相对于聚合物（a）计算的占聚合物基质中的发泡剂的1-10重量％ c）相对于聚合物（a）计算的2ppm-2重量％的抗结块添加剂，分布了珠粒表面，其包含IB，IIB和VIIB族金属的氧化物。

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