PROCESS FOR PRODUCING EXPANDABLE THERMOPLASTIC BEADS WITH IMPROVED EXPANDABILITY
    7.
    发明申请
    PROCESS FOR PRODUCING EXPANDABLE THERMOPLASTIC BEADS WITH IMPROVED EXPANDABILITY 审中-公开
    生产具有可扩展性的可膨胀热塑性珠粒的方法

    公开(公告)号:US20120121905A1

    公开(公告)日:2012-05-17

    申请号:US13291357

    申请日:2011-11-08

    IPC分类号: B32B27/00 C08J9/18

    摘要: A process for producing expandable, thermoplastic polymer beads comprising cavities via extrusion of a polymer melt comprising blowing agent through a die plate and pelletization in a chamber comprising liquid under a pressure in the range from 1.5 to 15 bar, which comprises using a polymer melt comprising blowing agent, where the melt comprises from 0.1 to 5% by weight of a nucleating agent D), from 1 to 10% by weight of a blowing agent E) which in essence remains within the polymer beads, from 0.01 to 5% by weight of a co-blowing agent F) forming the cavities, based in each case on the polymer melt comprising blowing agent, and also the expandable thermoplastic polymer bead material which can be obtained by the process, comprising cavities with an average diameter in the range from 0.1 to 50 μm.

    摘要翻译: 一种用于生产可膨胀的热塑性聚合物珠粒的方法,其包括通过包含发泡剂的聚合物熔体挤出通过模板并在包含液体的室中在1.5至15巴的压力范围内造粒的空腔,其包括使用聚合物熔体,其包含 发泡剂,其中熔体包含0.1至5重量%的成核剂D),1至10重量%的发泡剂E),其本质上保留在聚合物颗粒内,0.01至5重量% 的共发泡剂F)形成空腔,在每种情况下基于包含发泡剂的聚合物熔体,以及可通过该方法获得的可发泡热塑性聚合物珠粒材料,其包括平均直径范围从 0.1〜50μm。

    ELASTIC MOLDED FOAM BASED ON POLYOLEFIN/STYRENE POLYMER MIXTURES
    9.
    发明申请
    ELASTIC MOLDED FOAM BASED ON POLYOLEFIN/STYRENE POLYMER MIXTURES 审中-公开
    基于聚烯烃/苯乙烯聚合物混合物的弹性模制泡沫

    公开(公告)号:US20110269858A1

    公开(公告)日:2011-11-03

    申请号:US13143029

    申请日:2009-12-16

    摘要: Expandable, thermoplastic polymer bead material, comprising A) from 45 to 97.8 percent by weight of a styrene polymer, B1) from 1 to 45 percent by weight of a polyolefin with a melting point in the range from 105 to 140° C., B2) from 0 to 25 percent by weight of a polyolefin with a melting point below 105° C., C1) from 0.1 to 25 percent by weight of a block or graft copolymer with weight-average molar mass Mw of at least 100,000 g/mol, comprising a) at least one block S composed of from 95 to 100% by weight of vinylaromatic monomers and from 0 to 5% by weight of dienes, and b) at least one copolymer block (S/B)A composed of from 63 to 80% by weight of vinylaromatic monomers and from 20 to 37% by weight of dienes, with glass transition temperature TgA in the range from 5 to 30° C., where the proportion by weight of the entirety of all of the blocks S is in the range from 50 to 70% by weight, based on the block or graft copolymer A, C2) from 0 to 20 percent by weight of a styrene-butadiene or styrene-isoprene block copolymer different from C1, C3) from 0.1 to 9.9 percent by weight of a styrene-ethylene-butylene block copolymer, D) from 1 to 15 percent by weight of a blowing agent, and E) from 0 to 5 percent by weight of a nucleating agent, where the entirety composed of A) to E) gives 100% by weight.

    摘要翻译: 可膨胀的热塑性聚合物珠粒材料,其包含A)45至97.8重量%的苯乙烯聚合物,B1)1至45重量%的熔点为105-140℃的聚烯烃,B2 )0至25重量%的熔点低于105℃的聚烯烃,C1)0.1至25重量%的重均摩尔质量Mw至少为100,000克/摩尔的嵌段或接枝共聚物 包括a)至少一种由95-100%重量的乙烯基芳族单体和0-5%重量二烯组成的嵌段S,和b)至少一种由63组成的共聚物嵌段(S / B)A 至80重量%的乙烯基芳族单体和20至37重量%的二烯,玻璃化转变温度TgA在5至30℃的范围内,其中全部块S的重量比为 基于嵌段或接枝共聚物A在50至70重量%的范围内,C2)0至20重量%的苯乙烯 - 丁 二烯或苯乙烯 - 异戊二烯嵌段共聚物,不同于C1,C3)0.1至9.9重量%的苯乙烯 - 乙烯 - 丁烯嵌段共聚物,D)1至15重量%的发泡剂,E)0至 5重量%的成核剂,其中由A)至E)组成的整体得到100重量%。

    EXTRUDED SAN FOAMS
    10.
    发明申请
    EXTRUDED SAN FOAMS 审中-公开

    公开(公告)号:US20120161061A1

    公开(公告)日:2012-06-28

    申请号:US13394477

    申请日:2010-09-06

    摘要: Closed-cell extruded foam extruded foam with density in the range from 20 to 150 g/l and with a cell number in the range from 1 to 30 cells per mm is obtainable via (a) heating of a polymer component P, formed from P1) from 80 to 100% by weight (based on P) of one or more styrene-acrylonitrile copolymers (SAN), comprising a1) from 18 to 40% by weight (based on SAN) of copolymerized acrylonitrile, a2) from 60 to 82% by weight (based on SAN) of copolymerized styrene, and a3) from 0 to 22% by weight (based on SAN) of at least one copolymerized monomer from the group consisting of alkyl(meth)acrylates, (meth)acrylic acid, maleic anhydride and maleimides, P2) from 0 to 20% by weight (based on P) of one or more thermoplastic polymers from the group consisting of styrene copolymers, polyolefins, polyacrylates, polycarbonates (PC), polyesters, polyamides, polyether sulfones (PES), polyether ketones (PEK), and polyether sulfides, to form a polymer melt, (b) introduction of from 1 to 12% by weight (based on P) of a blowing agent component (T), which comprises less than 0.2% by weight of water (based on P), comprising b1) from 15 to 95% by weight (based on T) of carbon dioxide and b2) from 5 to 85% by weight (based on T) of one or more co-blowing agents selected from the group consisting of C1-C4 alcohols and C1-C4 carbonyl compounds, into the polymer melt to form a foamable melt, (c) extrusion of the foamable melt into a region of relatively low pressure, with foaming to give the extruded foam, (d) if appropriate, addition of additives to the polymer component (P) in at least

    摘要翻译: 通过(a)加热由P1形成的聚合物组分P,可获得密度为20至150g / l,细胞数范围为1至30个细胞/ mm的闭孔挤出泡沫挤出泡沫体 )80至100重量%(基于P)一种或多种苯乙烯 - 丙烯腈共聚物(SAN),其包含a1)18至40重量%(基于SAN)共聚丙烯腈,a2)60至82 共聚苯乙烯的重量%(基于SAN),和a3)0至22重量%(基于SAN)的至少一种由(甲基)丙烯酸烷基酯,(甲基)丙烯酸烷基酯,(甲基)丙烯酸烷基酯, 马来酸酐和马来酰亚胺,P2)0至20重量%(基于P)来自苯乙烯共聚物,聚烯烃,聚丙烯酸酯,聚碳酸酯(PC),聚酯,聚酰胺,聚醚砜(PES)的一种或多种热塑性聚合物 ),聚醚酮(PEK)和聚醚硫化物,以形成聚合物熔体,(b)引入1至12%重量 h(基于P)发泡剂组分(T),其包含小于0.2重量%的水(基于P),其包含b1)15至95重量%(基于T)的二氧化碳和 b2)5至85重量%(基于T)一种或多种选自C1-C4醇和C1-C4羰基化合物的共发泡剂,进入聚合物熔体以形成可发泡的熔体( c)将可发泡的熔体挤出到相对较低压力的区域中,发泡以得到挤出的泡沫,(d)如果合适,至少在聚合物组分(P)中加入添加剂