Oil-resistant, expandable styrene polymers
    2.
    发明授权
    Oil-resistant, expandable styrene polymers 失效
    耐油,可膨胀的苯乙烯聚合物

    公开(公告)号:US5177115A

    公开(公告)日:1993-01-05

    申请号:US793724

    申请日:1991-11-20

    摘要: An oil-resistant, expandable styrene polymer containsa) from 10 to 90% by weight of uncrosslinked polystyrene and/or an uncrosslinked styrene copolymer containing at least 50% by weight of copolymerized styrene,b) from 10 to 90% by weight of a crosslinked styrene polymer which contains at least 0.1% by weight, but less than 2% by weight, of a copolymerized monomer having at least two olefinic double bonds,c) from 1 to 10% by weight, based on the sum of a) and b), of a C.sub.3 - to C.sub.6 -hydrocarbon as blowing agent, and, if desired,d) conventional additives in effective amounts,the mixture of a) and b) having a melt flow index MFI (200.degree. C., 5.0 kp) in accordance with DIN 53 735 of from 1 to 20 [g/10 min].

    摘要翻译: 耐油性可发性苯乙烯聚合物含有a)10〜90重量%的未交联聚苯乙烯和/或含有至少50重量%共聚苯乙烯的未交联苯乙烯共聚物,b)10〜90重量% 交联苯乙烯聚合物,其含有至少0.1重量%但小于2重量%的具有至少两个烯属双键的共聚单体,c)1至10重量%,基于a)和 b),C3至C6烃作为发泡剂,如果需要,d)有效量的常规添加剂,a)和b)的混合物具有熔体流动指数MFI(200℃,5.0kp )根据DIN 53735为1〜20 [g / 10min]。

    Bead-form expandable styrene polymers having a high expansion capacity
    3.
    发明授权
    Bead-form expandable styrene polymers having a high expansion capacity 失效
    具有高膨胀能力的BEAD-FORM可膨胀的苯乙烯聚合物

    公开(公告)号:US5104903A

    公开(公告)日:1992-04-14

    申请号:US532740

    申请日:1990-06-04

    CPC分类号: C08J9/20 C08J2325/04

    摘要: Bead-form expandable styrene polymers containing a styrene polymer having a mean molecular weight (weight average) of less than 130.multidot.10.sup.3 and a steep high-molecular-weight flank of the molecular-weight distribution curve, and 0.15 to 1.5 mol of a C.sub.3 - to C.sub.6 -hydrocarbon as blowing agent, and, if desired, customary additives in effective amounts, are distinguished by a particularly high expansion capacity.

    摘要翻译: 包含平均分子量(重均分子量)小于130×10 3的苯乙烯聚合物和分子量分布曲线陡峭的高分子量侧面的珠状可发性苯乙烯聚合物和0.15-1.5摩尔的C3- C6烃作为发泡剂,并且如果需要,有效量的常规添加剂通过特别高的膨胀能力来区分。

    Flame resistant, expandable styrene polymers and foams, and flame
retardants
    4.
    发明授权
    Flame resistant, expandable styrene polymers and foams, and flame retardants 失效
    耐火,可发性苯乙烯聚合物和泡沫,以及阻燃剂

    公开(公告)号:US5010111A

    公开(公告)日:1991-04-23

    申请号:US565100

    申请日:1990-08-10

    摘要: Flame-resistant, expandable styrene polymers containing a styrene (co)polymer, from 0.4 to 6% by weight of hexabromocyclododecane having a mean particle size of from 1 to 50 .mu.m, the particles being provided with a firm coating which has a thickness of from 1/100 to 1/10 of the particle diameter and is insoluble in water and styrene, from 1 to 10% by weight of a C.sub.3 - to C.sub.6 -hydrocarbon as blowing agent, and, if desired, customary additives, are distinguished by a reduced internal water content and can be processed to form foams which have an improved foam structure and high UV stability.

    摘要翻译: 含有苯乙烯(共)聚合物的阻燃,可发性苯乙烯聚合物,0.4至6重量%的平均粒度为1至50μm的六溴环十二烷,该颗粒提供有牢固的涂层,其厚度为 不溶于水和苯乙烯,1至10重量%的C3至C6烃作为发泡剂,如果需要,常规添加剂的区别在于: 减少的内部水含量并且可以被加工成形成具有改善的泡沫结构和高的UV稳定性的泡沫。

    Heat distortion resistant, expandable styrene polymers having a high
capacity for expansion
    7.
    发明授权
    Heat distortion resistant, expandable styrene polymers having a high capacity for expansion 失效
    具有高膨胀能力的耐热变形性,可发性苯乙烯聚合物

    公开(公告)号:US5262445A

    公开(公告)日:1993-11-16

    申请号:US913374

    申请日:1992-07-15

    IPC分类号: C08J9/00 C08J9/20 C08J9/16

    摘要: Expandable styrene polymers containinga) from 80 to 99% by weight of polystyrene,b) from 1 to 20% by weight of a styrene-soluble polymer having a softening point above 140.degree. C.,c) from 3 to 10% by weight, based on the sum of a) and b), of a C.sub.3 - to C.sub.6 -hydrocarbon as blowing agent, and, if desired, d) conventional additives,the mixture of components a) and b) having a melt flow index MFI 200/5 of from 15 to 30, have high heat distortion resistance and a high capacity for expansion.

    摘要翻译: 其包含a)80至99重量%的聚苯乙烯,b)1至20重量%的软化点高于140℃的苯乙烯可溶性聚合物,c)3至10重量% 基于a)和b)的总和,C3至C6烃作为发泡剂,如果需要,d)常规添加剂,具有熔体流动指数MFI 200的组分a)和b)的混合物 / 5为15〜30,耐热变形性高,扩容能力强。

    Preparation of expandable styrene polymers
    9.
    发明授权
    Preparation of expandable styrene polymers 失效
    可膨胀苯乙烯聚合物的制备

    公开(公告)号:US5100923A

    公开(公告)日:1992-03-31

    申请号:US606313

    申请日:1990-10-31

    CPC分类号: C08J9/20 C08J2325/00

    摘要: In the preparation of expandable styrene polymers by polymerizing styrene, if desired together with up to 50% by weight of other monomers, in aqueous suspension with addition of a C.sub.3 - to C.sub.6 -hydrocarbon as blowing agent and, if desired, conventional additives in effective amounts before, during or after the polymerization, foaming is reduced if the aqueous phase contains from 0.05 to 0.3% by weight of polyvinylpyrrolidone having a K value of from 100 to 150 as protective colloid.

    摘要翻译: 在可发性苯乙烯聚合物的制备中,如果需要,加上多达50重量%的其它单体,在水性悬浮液中加入C3-至C6-烃作为发泡剂,如果需要,常规添加剂有效 如果水相含有0.05-0.3重量%的K值为100-150的聚乙烯吡咯烷酮作为保护胶体,则在聚合之前,期间或之后的量,发泡减少。