Process for producing alkenyl aromatic foams using a combination of
atmospheric and organic gases and foams produced thereby
    221.
    发明授权
    Process for producing alkenyl aromatic foams using a combination of atmospheric and organic gases and foams produced thereby 失效
    使用大气和有机气体的组合制造烯基芳族泡沫的方法和由此产生的泡沫

    公开(公告)号:US5269987A

    公开(公告)日:1993-12-14

    申请号:US995289

    申请日:1992-12-22

    Abstract: There is disclosed a process for producing alkenyl aromatic foams utilizing a combination of atmospheric and organic gases as blowing agent, preferably using greater than 30% by weight of atmospheric gas, and preferably also using a predetermined about of a masterbatch mix comprising a styrenic polymer, a rubbery block copolymer, and a solid blowing agent. Also disclosed are alkenyl aromatic foams produced by the process which exhibit increased densities, increased thermoforming capabilities, increased post-expansion properties, and increased retainment of the atmospheric and organic gases.

    Abstract translation: 公开了一种使用大气和有机气体作为发泡剂的组合制备烯基芳族泡沫的方法,优选使用大于30重量%的气氛气体,优选还使用预定的约含有苯乙烯聚合物的母料混合物, 橡胶状嵌段共聚物和固体发泡剂。 还公开了通过该方法生产的烯基芳族泡沫体,其显示增加的密度,增加的热成型能力,增加的后膨胀性能以及增加的大气和有机气体的保留。

    Resin composition for masterbatch of foaming agent
    222.
    发明授权
    Resin composition for masterbatch of foaming agent 失效
    发泡剂母料用树脂组合物

    公开(公告)号:US4632942A

    公开(公告)日:1986-12-30

    申请号:US662616

    申请日:1984-10-19

    Abstract: A resin composition for a masterbatch of foaming agent, comprising:(A) 100 parts by weight of a resin component comprising(i) 100 to 20% by weight of a modified resin having an aromatic vinyl monomer unit content of 5 to 70% by weight, the aromatic vinyl monomer unit being obtained by subjecting an ethylene polymer resin or propylene polymer resin and an aromatic vinyl monomer to graft polymerization, and(ii) 0 to 80% by weight of an ethylene polymer resin or propylene polymer resin, and(B) 1 to 50 parts by weight of a chemical foaming agent.

    Abstract translation: 一种发泡剂母料树脂组合物,其包含:(A)100重量份的树脂组分,其包含(i)100至20重量%的芳族乙烯基单体单元含量为5-70重量%的改性树脂,通过 通过使乙烯聚合物树脂或丙烯聚合物树脂和芳香族乙烯基单体进行接枝聚合而得到的芳族乙烯基单体单元,和(ii)0〜80重量%的乙烯聚合物树脂或丙烯聚合物树脂,和( B)1〜50重量份的化学发泡剂。

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