发明授权
US4368218A Method of making expandable thermoplastic polymer beads 失效
制造可膨胀热塑性聚合物珠粒的方法

Method of making expandable thermoplastic polymer beads
摘要:
Expandable thermoplastic polymer beads and method of producing same, wherein a core of a polymer of one or more vinyl monomers is substantially surrounded by a layer of a polyolefin comprising one or more vinyl monomers, with a foaming agent contained in at least the core.
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