HEAT-EXPANDABLE MICROSPHERES AND A PROCESS FOR PRODUCING THE SAME
    23.
    发明申请
    HEAT-EXPANDABLE MICROSPHERES AND A PROCESS FOR PRODUCING THE SAME 有权
    可热膨胀的微球及其制造方法

    公开(公告)号:US20090176098A1

    公开(公告)日:2009-07-09

    申请号:US12067771

    申请日:2006-10-04

    Abstract: A method that heat-expandable microspheres includes the use of a shell of thermoplastic resin and a non-fluorine blowing agent encapsulated therein having a boiling point not higher than the softening point of the thermoplastic resin. The method includes a step of dispersing an oily mixture containing a polymerizable component, the blowing agent, and a polymerization initiator containing a peroxydicarbonate in an aqueous dispersing medium to polymerize the polymerizable component contained in the oily mixture. The resultant heat-expandable microspheres have a shell which is less apt to become thinner than its theoretical value, contain minimum amount of resin particle inside their shell, and have excellent heat-expanding performance.

    Abstract translation: 热膨胀性微球的方法包括使用热塑性树脂的壳和封入其中的沸点不高于热塑性树脂的软化点的非氟发泡剂。 该方法包括将含有可聚合组分的油性混合物,发泡剂和含有过氧化二碳酸酯的聚合引发剂分散在水性分散介质中以使包含在油性混合物中的可聚合组分聚合的步骤。 所得到的热膨胀性微球体的外壳不易于其理论值变薄,在其壳内含有最少量的树脂颗粒,并且具有优异的热膨胀性能。

    Thermo-expansive microspheres, their production process and their application
    24.
    发明申请
    Thermo-expansive microspheres, their production process and their application 失效
    热膨胀微球,其生产工艺及其应用

    公开(公告)号:US20050080151A1

    公开(公告)日:2005-04-14

    申请号:US10954212

    申请日:2004-10-01

    CPC classification number: C08J9/32 B01J13/14 C08J2203/14 C08J2203/22

    Abstract: The present invention provides thermo-expansive microspheres comprising thermoplastic resinous shell and a blowing agent being encapsulated in the shell, the blowing agent which is a fluorine-containing C2-10 compound having ether linkage, being free of chlorine and bromine atoms and gasifying at a temperature not higher than the softening point of the thermoplastic resin; and also provides the production and application processes thereof. The thermo-expansive microspheres have preferably an average particle size ranging from 1 to 100 μm and a CV, or coefficient of variation, of particle size distribution being 30% or less, and a retaining ratio of blowing agent encapsulated being 90% or more. The thermo-expansive microspheres have low environmental loading and superior flame-retardant or flame-resistant performance, and have particle sizes distributing in narrow ranges. Those thermo-expansive microspheres and foamed hollow microspheres are suitable for applying to fire-proof paints, flame-retardant or flame-resistant thermo-insulating materials, flame-retardant or flame-resistant lightweight fillers, and flame-retardant or flame-resistant lightweight molded products, in addition to the conventional application field.

    Abstract translation: 本发明提供包含热塑性树脂壳和封装在壳中的发泡剂的热膨胀性微球,发泡剂是具有醚键的含氟C2-10化合物,不含氯和溴原子,并在 温度不高于热塑性树脂的软化点; 并提供其生产和应用程序。 热膨胀性微球体的平均粒径优选为1〜100μm,粒径分布的CV或变异系数为30%以下,发泡剂的保持率为90%以上。 热膨胀微球具有低环境负荷和优异的阻燃或阻燃性能,并且粒度分布范围窄。 这些热膨胀微球和发泡中空微球适用于防火涂料,阻燃或阻燃绝热材料,阻燃或阻燃轻质填料,以及阻燃或阻燃轻质 模制产品,除了常规应用领域。

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