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    • 9. 发明授权
    • Expandable thermoplastic resin beads
    • 可膨胀热塑性树脂珠
    • US4874796A
    • 1989-10-17
    • US232900
    • 1988-08-16
    • Richard B. AllenWilliam E. GibbsLynn M. Hans
    • Richard B. AllenWilliam E. GibbsLynn M. Hans
    • C08J9/18C08J9/20
    • C08J9/20C08J9/18C08J2351/08Y10S264/05
    • A process for producing expandable thermoplastic resin beads which comprises suspending in an aqueous medium interpolymer beads comprising a polyphenylene ether resin and a polymerized vinyl aromatic monomer such as styrene, polymerizing the vinyl aromatic monomer in the presence of a polymerization catalyst to interpolymerize the vinyl aromatic monomer with the polyphenylene ether and, optionally, adding a cross-linking agent, to form interpolymerized thermoplastic resin beads, and introducing a blowing agent under pressure into the thermoplastic resin beads. The resulting resin beads have excellent foamability and molding fusability, and a foamed shaped article having superior thermal stability can be prepared from these beads.
    • 一种制造可发性热塑性树脂珠粒的方法,其包括在包含聚苯醚树脂和聚合乙烯基芳族单体如苯乙烯的水性介质互聚物珠中悬浮,在聚合催化剂存在下聚合乙烯基芳族单体以共聚乙烯基芳族单体 与聚苯醚和任选地加入交联剂以形成共聚的热塑性树脂珠,并将压力下的发泡剂引入到热塑性树脂珠中。 所得到的树脂珠具有优异的发泡性和成型熔融性,并且可以从这些珠制备具有优异的热稳定性的发泡成型制品。