Non-linear styrenic polymer-based foams
    82.
    发明授权
    Non-linear styrenic polymer-based foams 失效
    非线性苯乙烯类聚合物基泡沫

    公开(公告)号:US5830924A

    公开(公告)日:1998-11-03

    申请号:US817078

    申请日:1997-04-09

    IPC分类号: C08J9/12 C08J9/08 C08J9/14

    摘要: Disclosed is a process for preparing a low density closed-cell polymer foam comprising a plurality of closed-cells having an average cell size of at least about 0.08 millimeter characterized in that the process comprises the steps of heat plastifying an expandable or foamable monovinyl aromatic polymer formulation comprising a non-linear monovinyl aromatic polymer composition and an environmentally acceptable blowing agent; and reducing the pressure on the mixture to form a foam. A stable monovinyl aromatic polymer foam prepared from a non-linear styrenic polymer composition and environmentally acceptable blowing agents is also disclosed.

    摘要翻译: PCT No.PCT / US95 / 13362 Sec。 371日期1997年04月9日 102(e)日期1997年4月9日PCT提交1995年10月13日PCT公布。 公开号WO96 / 11970 日期1996年4月25日公开是一种制备低密度闭孔聚合物泡沫的方法,其包括平均泡孔尺寸为至少约0.08毫米的多个闭孔,其特征在于该方法包括以下步骤:将可膨胀 或包含非线性单乙烯基芳族聚合物组合物和环境可接受的发泡剂的可发泡单乙烯基芳族聚合物制剂; 并减少混合物上的压力以形成泡沫。 还公开了由非线性苯乙烯类聚合物组合物和环境可接受的发泡剂制备的稳定的单乙烯基芳族聚合物泡沫体。

    Film made from heterogenous ethylene/alpha-olefin interpolymer
    83.
    发明授权
    Film made from heterogenous ethylene/alpha-olefin interpolymer 有权
    由异源乙烯/α-烯烃互聚物制成的膜

    公开(公告)号:US09206303B2

    公开(公告)日:2015-12-08

    申请号:US13254267

    申请日:2009-12-16

    摘要: A multilayer film is disclosed, having at least two layers. A first layer includes a first interpolymer of ethylene and at least one alpha-olefin. The first interpolymer has a density of less than 0.925 g/cm3, and an average Mv and a valley temperature between the interpolymer and high crystalline fraction, The, such that the average Mv for a fraction above The from ATREF divided by average Mv of the whole polymer from ATREF (Mhc/Mhp) is less than about 1.95 and the first interpolymer has a CDBI of less than 60%. At least one other second layer includes a second inter-polymer of ethylene and at least one alpha-olefin, the second interpolymer having a density from 0.925 to 0.965 g/cm3. The interpolymer of ethylene and at least one alpha-olefin can have a high density fraction and an overall density such that % HD fraction

    摘要翻译: 公开了具有至少两层的多层膜。 第一层包括乙烯和至少一种α-烯烃的第一互聚物。 第一互聚物具有小于0.925g / cm 3的密度,以及互聚物和高结晶部分之间的平均Mv和谷值温度,使得从ATREF以上的分数的平均Mv除以平均Mv 来自ATREF(Mhc / Mhp)的全部聚合物小于约1.95,并且第一互聚物的CDBI小于60%。 至少一个其它第二层包括乙烯和至少一种α-烯烃的第二共聚物,第二互聚物的密度为0.925-0.965g / cm3。 乙烯和至少一种α-烯烃的互聚物可以具有高密度分数和总体密度,使得%HD分数<0.0168x2-29.636x + 13036,其中x =密度(g / cm3)。