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    Preparation of toughened polystyrene molding materials
    8.
    发明授权
    Preparation of toughened polystyrene molding materials 失效
    增韧聚苯乙烯成型材料的制备

    公开(公告)号：US5795938A

    公开(公告)日：1998-08-18

    申请号：US849894

    申请日：1997-06-16

    申请人： Konrad Knoll ,  Wolfgang Loth ,  Wolfgang Fischer ,  Hermann Gausepohl

    发明人： Konrad Knoll ,  Wolfgang Loth ,  Wolfgang Fischer ,  Hermann Gausepohl

    IPC分类号： C08F2/42 ,  C08F6/00 ,  C08F297/04 ,  C08J3/00 ,  C08L25/06 ,  C08L53/02

    CPC分类号： C08J3/005 ,  C08F297/04 ,  C08F6/003 ,  C08L25/06 ,  C08L53/02

    摘要： Toughened vinyl aromatic compounds, in particular high impact polystyrene, are prepared by a continuous process in which the vinyl aromatic compound and the impact modifier, an elastomeric block copolymer, are each prepared separately in a reaction zone by anionic polymerization, with or without heat exchange with the environment and, if required, with the addition of a solvent, and are polymerized until complete conversion is achieved, and the living chain ends are terminated in a manner known per se, and a thermoplastic, toughened molding material is based on a vinyl aromatic compound having a residual content of less than 50 ppm of monomers and less than 100 ppm of oligomers.

    摘要翻译： PCT No.PCT / EP95 / 04809 Sec。 371日期：1997年6月16日 102（e）日期1997年6月16日PCT提交1995年12月7日PCT公布。 WO96 / 18682 PCT出版物 日期1996年6月20日通过连续方法制备乙烯基芳族化合物，特别是高抗冲聚苯乙烯，其中乙烯基芳族化合物和抗冲改性剂弹性体嵌段共聚物各自通过阴离子聚合在反应区中分别制备， 与环境进行或不进行热交换，并且如果需要，通过加入溶剂，并且聚合直至完全转化，并且活性链末端以本身已知的方式终止，并且将热塑性增韧的模塑材料 基于剩余含量小于50ppm的单体和小于100ppm的低聚物的乙烯基芳族化合物。

    Thermoplastic elastomeric block copolymers
    10.
    发明授权
    Thermoplastic elastomeric block copolymers 失效
    热塑性弹性体嵌段共聚物

    公开(公告)号：US06197889B1

    公开(公告)日：2001-03-06

    申请号：US08981051

    申请日：1997-12-11

    申请人： Konrad Knoll ,  Hermann Gausepohl ,  Norbert Niessner ,  Paul Naegele ,  Wolfgang Fischer

    发明人： Konrad Knoll ,  Hermann Gausepohl ,  Norbert Niessner ,  Paul Naegele ,  Wolfgang Fischer

    IPC分类号： C08F29300

    CPC分类号： C08F297/04

    摘要： Elastomeric block copolymers comprising at least one hard block A composed of styrene monomers and at least one elastomeric block (B/A) composed of styrene monomers and dienes, the glass transition temperature Tg of the block A being more than 25° C. and that of block (B/A) being less than 25° C. and the phase volume ratio of block A to block (B/A) being chosen so that the proportion of the hard phase in the total block copolymer is from 1 to 40% by volume and the amount by weight of the diene is less than 50% by weight, and the relative proportion of 1,2 linkages of the polydiene, based on the sum of 1,2- and 1,4-cis/trans linkages, being below 15%, are prepared by anionic polymerization by means of a lithium alkyl in a nonpolar solvent in the presence of a soluble potassium salt and are used for the production of shaped articles.

    摘要翻译： 弹性体嵌段共聚物包含至少一个由苯乙烯单体组成的硬嵌段A和至少一个由苯乙烯单体和二烯构成的弹性嵌段（B / A），嵌段A的玻璃化转变温度Tg高于25℃， （B / A）小于25℃，并且选择块A与嵌段（B / A）的相体积比，使得总嵌段共聚物中硬相的比例为1〜40％ 并且二烯的重量百分比小于50重量％，并且基于1,2-和1,4-顺/反键的总和的聚二烯的1,2-键的相对比例， 低于15％，通过在非极性溶剂中在可溶性钾盐的存在下通过烷基锂进行阴离子聚合制备，并用于生产成型制品。