Flexible bimodal foam structures
    5.
    发明授权

    公开(公告)号:US5369137A

    公开(公告)日:1994-11-29

    申请号:US230185

    申请日:1994-04-20

    IPC分类号: C08J9/12

    摘要: Disclosed is a flexibilized, insulative styrenic polymer foam structure comprising a foam of a polymeric composition of a styrenic polymer greater than 50 percent by weight styrenic monomeric units, the foam having relatively larger primary cells with an average cell size range of about 0.05 to about 1.2 millimeters and relatively smaller secondary cells ranging in cell size from about 5 percent to about 50 percent of the average cell size of the primary cells. The primary and secondary cells constitute at least about 90 percent of the total cell volume within the foam structure. Between 1 and 30 percent by number of the cells have microscopic "pinholes" between them. The presence of the pinholes enhances the flexure of the foam structure. Further disclosed is a method of insulating a surface comprising applying to the surface an insulating panel fashioned from the structure of claim 1.

    Method of forming thermoplastic foams using cell size enlarging agents
    6.
    发明授权
    Method of forming thermoplastic foams using cell size enlarging agents 失效
    使用细胞尺寸扩大剂形成热塑性泡沫的方法

    公开(公告)号:US5489407A

    公开(公告)日:1996-02-06

    申请号:US278283

    申请日:1994-07-21

    IPC分类号: C08J9/04 C08J9/00 B29C44/20

    CPC分类号: C08J9/0014 Y10S264/13

    摘要: A process for making a closed-cell, alkenyl aromatic polymer foam structure having enlarged cell size. An alkenyl aromatic polymer material is heated to form a melt polymer material. An amount of a non-waxy cell size enlarging agent is incorporated into the melt polymer material. The enlarging agent is present in an amount sufficient to enlarge the stabilized cell size of the formed foam structure by 20 percent or more over a corresponding foam structure made without the enlarging agent. Further, the enlarging agent is incorporated in a quantity such that the formed foam structure has physical properties substantially the same degree as the corresponding foam structure. A blowing agent is incorporated into the melt polymer material at an elevated pressure to form a foamable gel. The foamable gel is expanded in a zone of lower pressure to form the foam structure. Further, disclosed is a foam structure corresponding to the above.

    摘要翻译: 一种制备具有增大的孔尺寸的闭孔,链烯基芳族聚合物泡沫结构的方法。 将烯基芳族聚合物材料加热以形成熔融聚合物材料。 将一定量的非蜡状细胞尺寸扩大剂掺入熔融聚合物材料中。 增容剂的存在量足以使所形成的泡沫结构体的稳定的细胞尺寸在不含放大剂的相应的泡沫结构上扩大20%或更多。 此外,扩大剂的掺入量使得所形成的泡沫结构的物理性质与相应的泡沫结构基本相同。 将发泡剂在升高的压力下加入到熔融聚合物材料中以形成可发泡凝胶。 可发泡凝胶在较低压力的区域内膨胀以形成泡沫结构。 此外,公开了对应于上述的泡沫结构。

    Flexible bimodal foam structures
    7.
    发明授权
    Flexible bimodal foam structures 失效
    柔性双峰泡沫结构

    公开(公告)号:US5332761A

    公开(公告)日:1994-07-26

    申请号:US161946

    申请日:1993-12-03

    IPC分类号: C08J9/12

    摘要: Disclosed is a flexibilized, insulative styrenic polymer foam structure comprising a foam of a polymeric composition of a styrenic polymer greater than 50 percent by weight styrenic monomeric units, the foam having relatively larger primary cells with an average cell size range of about 0.05 to about 1.2 millimeters and relatively smaller secondary cells ranging in cell size from about 5 percent to about 50 percent of the average cell size of the primary cells. The primary and secondary cells constitute at least about 90 percent of the total cell volume within the foam structure. Between 1 and 30 percent by number of the cells have microscopic "pinholes" between them. The presence of the pinholes enhances the flexure of the foam structure. Further disclosed is a method of insulating a surface comprising applying to the surface an insulating panel fashioned from the structure of claim 1.

    摘要翻译: 公开了一种柔性绝缘的苯乙烯聚合物泡沫结构,其包含苯乙烯聚合物的聚合物组合物的泡沫,苯乙烯聚合物的重量百分比大于50重量%苯乙烯单体单元,泡沫具有相对较大的原始细胞,平均泡孔尺寸范围为约0.05至约1.2 毫米,并且相对较小的二次电池的电池尺寸范围为原始电池的平均电池尺寸的约5%至约50%。 初级和次级细胞构成泡沫结构内总细胞体积的至少约90%。 1至30个数量的细胞在它们之间具有微观的“针孔”。 针孔的存在增强了泡沫结构的挠曲。 还公开了一种绝缘表面的方法,包括将由绝缘板构成的绝缘板施加在表面上。

    Fire resistant vinylaromatic foams
    9.
    发明授权
    Fire resistant vinylaromatic foams 失效
    耐火乙烯基芳烃泡沫

    公开(公告)号:US5171757A

    公开(公告)日:1992-12-15

    申请号:US809207

    申请日:1991-12-13

    CPC分类号: C08L25/18 Y10S521/907

    摘要: Flame retardant vinylaromatic thermoplastic resin compositions are provided comprising 100 parts vinylaromatic polymer, 0.1 to 2.0 parts of at least one brominated aliphatic compound, 0.5 to 3.0 parts of at least one other and different brominated organic compound having a higher volatilization temperature and greater heat stability than said brominated aliphatic compound and from 0.05 to 5 parts of at least one melt flow promoter.

    摘要翻译: 提供了阻燃乙烯基芳族热塑性树脂组合物,其包含100份乙烯基芳族聚合物,0.1至2.0份至少一种溴化脂族化合物,0.5-3.0份至少一种其它和不同的具有较高挥发温度和较高热稳定性的溴化有机化合物, 所述溴化脂族化合物和0.05至5份至少一种熔体流动促进剂。

    Foams comprising HFC-134 and a low solubility co-blowing agent and a process for making
    10.
    发明授权
    Foams comprising HFC-134 and a low solubility co-blowing agent and a process for making 失效
    包含HFC-134和低溶解度共发泡剂的泡沫及其制造方法

    公开(公告)号:US06225364B1

    公开(公告)日:2001-05-01

    申请号:US09581337

    申请日:2000-08-01

    IPC分类号: C08J912

    摘要: Disclosed is an extruded, dimensionally stable, closed cell alkenyl aromatic polymer foam. The foam comprises an alkenyl aromatic polymer material greater than 50 percent by weight of alkenyl aromatic monomeric units. The foam has a density of about 16 to about 64 kilograms per cubic meter. The foam has a thickness in cross section of 15 millimeters or more. The foam has a blowing agent composition comprising a primary blowing agent of about 70 to about 95 weight percent 1,1,2,2-tetrafluoroethane and a secondary blowing agent comprising about 30 to about 5 weight percent based upon the total moles of the blowing agent composition. The secondary blowing agent being selected from the group consisting essentially of 1,1,1,2-tetrafluoroethane, carbon dioxide, nitrogen, argon, and water. Further disclosed is a process for making the foam.

    摘要翻译: 公开了挤出的,尺寸稳定的闭孔烯基芳族聚合物泡沫。 泡沫体包含大于50重量%链烯基芳族单体单元的烯基芳族聚合物材料。 泡沫的密度约为16至64千克每立方米。 泡沫的横截面厚度为15毫米以上。 泡沫体具有发泡剂组合物,其包含约70至约95重量%的1,1,2,2-四氟乙烷的初始发泡剂和包含基于吹塑的总摩尔数的约30至约5重量%的二次发泡剂 代理成分。 二次发泡剂选自基本上由1,1,1,2-四氟乙烷,二氧化碳,氮气,氩气和水组成的组。 另外公开了制造泡沫的方法。