Process for the preparation of expandable polystyrene
    1.
    发明授权
    Process for the preparation of expandable polystyrene 失效
    制备可发性聚苯乙烯的方法

    公开(公告)号:US5591778A

    公开(公告)日:1997-01-07

    申请号:US514643

    申请日:1995-08-14

    IPC分类号: C08J9/20 C08J9/14 C08J9/18

    CPC分类号: C08J9/141 C08J2325/04

    摘要: The invention relates to a process for the preparation of bead shaped, expandable polystyrene by the polymerization of styrene in an aqueous suspension in the presence of dimeric .alpha.-methylstyrene as a regulator and a C.sub.3 to C.sub.6 hydrocarbon as a blowing agent, whereby one first reports the content of saturated hydrocarbons, having a boiling point between 70.degree. and 170.degree. C., in the styrene and dimeric .alpha.-methylstyrene, and then enough saturated hydrocarbons, having a boiling point from 70.degree. to 170.degree. C., are added before, during or after the polymerization so that their total content in the suspension is from 0.1 to 0.8 weight percent, based on the styrene.

    摘要翻译: 本发明涉及通过在二聚α-甲基苯乙烯作为调节剂和作为发泡剂的C 3 -C 6烃的存在下在水悬浮液中聚合苯乙烯来制备珠粒状可发性聚苯乙烯的方法,其中首先报告 在苯乙烯和二聚α-甲基苯乙烯中沸点为70〜170℃的饱和烃的含量,然后加入沸点为70〜170℃的足够的饱和烃,在 在聚合期间或之后,使得它们在悬浮液中的总含量为0.1至0.8重量%,基于苯乙烯。

    Expandable styrene polymers containing carbon dioxide as blowing agent
    2.
    发明授权
    Expandable styrene polymers containing carbon dioxide as blowing agent 失效
    含有二氧化碳作为发泡剂的可膨胀的苯乙烯聚合物

    公开(公告)号:US5229429A

    公开(公告)日:1993-07-20

    申请号:US973822

    申请日:1992-11-09

    摘要: The invention relates to expandable styrene polymers containinga) a styrene polymer,b) and at least one carbon dioxide absorber, mixed or copolymerized with the above, in an amount of from 0.01 to 50% by weight, based on the sum of a) and b), andc) a blowing agent or blowing agent mixture in an amount of from 0.5 to 12% by weight,where the blowing agent or blowing agent mixture comprisesc.sub.1) from 10 to 100% by weight of carbon dioxide andc.sub.2) from 0 to 90% by weight of at least one further blowing agent.The invention furthermore relates to the styrene polymers containing a carbon dioxide absorber, to the styrene polymer foams obtainable from the expandable styrene polymers, and to an improved process for impregnating styrene polymers with carbon dioxide-containing blowing agents or blowing agent mixtures.

    摘要翻译: 本发明涉及含有a)苯乙烯聚合物,b)和至少一种与上述混合或共聚的二氧化碳吸收剂的可发性苯乙烯聚合物,其量为0.01至50重量%,基于a) 和b),和c)发泡剂或发泡剂混合物的量为0.5至12重量%,其中发泡剂或发泡剂混合物包含c1)10至100重量%的二氧化碳和c2) 0至90重量%的至少一种其它发泡剂。 本发明还涉及含有二氧化碳吸收剂的苯乙烯聚合物,可从可发性苯乙烯聚合物获得的苯乙烯聚合物泡沫,以及用含二氧化碳的发泡剂或发泡剂混合物浸渍苯乙烯聚合物的改进方法。

    Expandable styrene polymers containing carbon dioxide as blowing agent
    3.
    发明授权
    Expandable styrene polymers containing carbon dioxide as blowing agent 失效
    含有二氧化碳作为发泡剂的可发性苯乙烯聚合物

    公开(公告)号:US5258415A

    公开(公告)日:1993-11-02

    申请号:US10316

    申请日:1993-01-28

    摘要: The invention relates to expandable styrene polymers containinga) a styrene polymer,b) and at least one carbon dioxide absorber, mixed or copolymerized with the above, in an amount of from 0.01 to 50% by weight, based on the sum of a) and b), andc) a blowing agent or blowing agent mixture in an amount of from 0.5 to 12% by weight,where the blowing agent or blowing agent mixture comprisesc.sub.1) from 10 to 100% by weight of carbon dioxide andc.sub.2) from 0 to 90% by weight of at least one further blowing agent.The invention furthermore relates to the styrene polymers containing a carbon dioxide absorber, to the styrene polymer foams obtainable from the expandable styrene polymers, and to an improved process for impregnating styrene polymers with carbon dioxide-containing blowing agents or blowing agent mixtures.

    摘要翻译: 本发明涉及含有a)苯乙烯聚合物,b)和至少一种与上述混合或共聚的二氧化碳吸收剂的可发性苯乙烯聚合物,其量为0.01至50重量%,基于a) 和b),和c)发泡剂或发泡剂混合物的量为0.5至12重量%,其中发泡剂或发泡剂混合物包含c1)10至100重量%的二氧化碳和c2) 0至90重量%的至少一种其它发泡剂。 本发明还涉及含有二氧化碳吸收剂的苯乙烯聚合物,可从可发性苯乙烯聚合物获得的苯乙烯聚合物泡沫,以及用含二氧化碳的发泡剂或发泡剂混合物浸渍苯乙烯聚合物的改进方法。