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    • 1. 发明申请
    • EXPANDABLE VINYL AROMATIC POLYMERS AND PROCESS FOR THE PREPARATION THEREOF
    • 可膨胀的乙烯芳族聚合物及其制备方法
    • US20120132845A1
    • 2012-05-31
    • US13376619
    • 2010-06-21
    • Philippe LodefierStéphane NoweJose M. SosaMichel Duc
    • Philippe LodefierStéphane NoweJose M. SosaMichel Duc
    • E04B1/76
    • C08J9/0066C08J9/0061C08J2201/03C08J2203/06C08J2203/14C08J2203/142C08J2325/14C08J2425/00
    • The present invention is an expandable vinyl aromatic polymer which comprises:a) a matrix of a branched aromatic ionomer,b) 1-10% by weight calculated with respect to the polymer (a), of an expanding agent englobed in the polymeric matrix,c) 0-20% by weight, calculated with respect to the polymer (a), of a filler homogeneously distributed in the polymeric matrix,in which,the branched aromatic ionomer comprises the product of co-polymerizing a first monomer comprising an aromatic moiety and an unsaturated alkyl moiety and a second monomer comprising an ionic moiety and at least two unsaturated moieties, wherein the ionic moiety has at least two ionizable groups, a cationic group that ionizes to form cations and an anionic group that ionizes to form anions, and wherein the cationic group is polyvalent and one capable of forming bridges to other molecules.The present invention also relates to the use of the expandable vinyl aromatic polymer to make expanded articles, in particular insulation boards.
    • 本发明是一种可膨胀的乙烯基芳族聚合物,其包括:a)支化芳族离聚物的基质,b)相对于聚合物(a)计算的1-10重量%的聚合物基质中发泡剂, c)相对于聚合物(a)计算的均匀分布在聚合物基质中的填料为0-20重量%,其中,支化芳族离聚物包括使包含芳族部分的第一单体共聚的产物 和不饱和烷基部分和包含离子部分和至少两个不饱和部分的第二单体,其中所述离子部分具有至少两个可离子化基团,离子化以形成阳离子的阳离子基团和电离以形成阴离子的阴离子基团,以及 其中阳离子基团是多价的,并且能够与其它分子形成桥键。 本发明还涉及可膨胀乙烯基芳族聚合物制造膨胀制品,特别是绝缘板的用途。
    • 5. 发明授权
    • Low temperature initiators for improving the rubber phase volume of HIPS formulations
    • 用于改善HIPS配方橡胶相体积的低温引发剂
    • US07754817B2
    • 2010-07-13
    • US11262641
    • 2005-10-31
    • Jose M. SosaShazia Ullah
    • Jose M. SosaShazia Ullah
    • C08F263/00C08F293/00
    • C08F279/02C08L51/04C08L2666/02
    • Peroxide initiators are disclosed that can be used at lower temperatures during HIPS production. Enhanced formation of graft polymers between polystyrene and polybutadiene (rubber) can be accomplished by using these lower temperature peroxide initiators that have a 1 hour half-life period at one or more temperatures from 95° C. to less than 111° C. during the pre-inversion stage. “Higher” temperature initiators are used during and/or after inversion. The use of such “low” temperature initiators improves polymerization rates and grafting values, while reducing the swell index and the amount of rubber used, thereby producing improved HIPS more rapidly and at a lower cost. Also disclosed are HIPS compositions and products produced by such “low” temperature initiators as well as a method of producing improved HIPS.
    • 公开了可以在HIPS生产期间在较低温度下使用的过氧化物引发剂。 在聚苯乙烯和聚丁二烯(橡胶)之间增强的接枝聚合物的形成可以通过使用这些低温过氧化物引发剂来实现,该引发剂在一个或多个温度从95℃到小于111℃的时间内具有1小时的半衰期 预转换阶段。 在反转期间和/或之后使用“较高”的温度引发剂。 使用这种“低”温度引发剂提高了聚合速率和接枝值,同时降低了溶胀指数和使用的橡胶的量,从而以更低的成本更快速地生产改进的HIPS。 还公开了由这种“低”温度引发剂生产的HIPS组合物和产物以及生产改进的HIPS的方法。