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57 条记录 (耗时 0.029 秒)

    Foams comprising HFC-134 and a low solubility co-blowing agent and a process for making
    32.
    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

    申请人： Bharat I. Chaudhary ,  Kyung W. Suh ,  Andrew N. Paquet

    发明人： Bharat I. Chaudhary ,  Kyung W. Suh ,  Andrew N. Paquet

    IPC分类号： C08J912

    CPC分类号： C08J9/146 ,  C08J9/127 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/142 ,  C08J2205/052 ,  C08J2325/04 ,  Y10S264/04 ,  Y10S521/91

    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。

    Process for making alkenyl aromatic foam packing bodies with carbon dioxide and/or ethane blowing agent systems
    38.
    发明授权
    Process for making alkenyl aromatic foam packing bodies with carbon dioxide and/or ethane blowing agent systems 失效
    用二氧化碳和/或乙烷发泡剂体系制备烯基芳族泡沫包装体的方法

    公开(公告)号：US5288740A

    公开(公告)日：1994-02-22

    申请号：US059718

    申请日：1993-05-11

    申请人： Chung P. Park ,  Kyung W. Suh

    发明人： Chung P. Park ,  Kyung W. Suh

    IPC分类号： C08J9/08 ,  C08J9/12 ,  C08J9/14 ,  C08J9/16

    CPC分类号： C08J9/141 ,  C08J9/12 ,  C08J9/122 ,  C08J9/127 ,  C08J9/16 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/14 ,  C08J2205/052 ,  C08J2325/04

    摘要： Disclosed is a process for making closed-cell, alkenyl aromatic polymer foam packing bodies. An alkenyl aromatic polymer material is heated to form a melt polymer material. The melt polymer material comprises greater than 50 percent by weight alkenyl aromatic monomeric units. A blowing agent is incorporated into the melt polymer material at an elevated pressure to form a foamable gel. The blowing agent has about 20 weight percent or more based upon the total weight of the first blowing agent selected from the group consisting of carbon dioxide and ethane. The foamable gel is extruded through a die to form a foam strand. The foam strand is pelletized to form a plurality of foam bodies. The bodies are further expanded by exposing them one or more times to heated air or steam. Preferably, the bodies are allowed to age for a preselected period of time after pelletizing and between subsequent expansions. The use of carbon dioxide and/or ethane as blowing agents allows the reduction or elimination of certain blowing agents classified as volatile organic contaminants, which are currently being employed commercially.Further disclosed is a process for making an article formed from the foam packing bodies. Further disclosed is a process for making discrete foam strands.

    摘要翻译： 公开了一种制备闭孔，烯基芳族聚合物泡沫包装体的方法。 将烯基芳族聚合物材料加热以形成熔融聚合物材料。 熔融聚合物材料包含大于50重量％的链烯基芳族单体单元。 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。 发泡剂相对于选自二氧化碳和乙烷的第一发泡剂的总重量为约20重量％以上。 可发泡凝胶通过模具挤出以形成泡沫链。 将泡沫线料造粒以形成多个泡沫体。 通过将它们一次或多次暴露于加热的空气或蒸汽来进一步膨胀体。 优选地，在造粒之后和随后的膨胀之间允许体在老化时间段内预选。 使用二氧化碳和/或乙烷作为发泡剂允许减少或消除目前正在商业上使用的分类为挥发性有机污染物的某些发泡剂。 进一步公开了一种制造由泡沫包装体形成的制品的方法。 进一步公开的是制造分立的泡沫股线的方法。

    Carbon black-containing bimodal foam structures and process for making
    39.
    发明授权
    Carbon black-containing bimodal foam structures and process for making 失效
    含黑炭的双峰泡沫结构及其制备方法

    公开(公告)号：US5240968A

    公开(公告)日：1993-08-31

    申请号：US990228

    申请日：1992-12-14

    申请人： Andrew N. Paquet ,  Kyung W. Suh

    发明人： Andrew N. Paquet ,  Kyung W. Suh

    IPC分类号： C08J9/00 ,  C08J9/12

    CPC分类号： C08J9/0066 ,  C08J9/12 ,  C08J2203/12 ,  C08J2205/048 ,  C08J2325/06

    摘要： Disclosed is a a bimodal, insulative, styrenic polymer foam structure comprising a foam of a styrene polymer material of greater than 50 percent by weight of styrenic monomeric units, the foam having relatively larger primary cells with a cell size range of 0.05 to 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. The bimodal structure has an amount of carbon black sufficient to reduce the thermal conductivity of the structure below that of a corresponding bimodal structure without carbon black. Further disclosed is a process for making the foam structure.

    摘要翻译： 公开了一种双峰，绝缘，苯乙烯聚合物泡沫结构，其包含苯乙烯聚合物材料的泡沫，其大于50重量％的苯乙烯单体单元，泡沫具有相对较大的原电池，其电池尺寸范围为0.05至1.2毫米， 细胞尺寸小于原代细胞平均细胞大小的约5％至约50％的较小的二次细胞。 初级和次级细胞构成泡沫结构内总细胞体积的至少约90％。 双峰结构具有足以将结构的热导率降低到低于不具有炭黑的相应双峰结构的热导率的量的炭黑。 进一步公开的是制造泡沫结构的方法。