Method of making a high impact polystyrene
    2.
    发明授权
    Method of making a high impact polystyrene 失效
    制造高抗冲聚苯乙烯的方法

    公开(公告)号:US4255315A

    公开(公告)日:1981-03-10

    申请号:US23227

    申请日:1979-03-23

    申请人: Harry D. Anspon

    发明人: Harry D. Anspon

    IPC分类号: C08F279/02 C08K5/01

    CPC分类号: C08F279/02

    摘要: An otherwise conventional two-stage (mass suspension polymerization system for making impact polystyrene is modified in several respects: (a) the rubber (about 7% to about 10% of the polymerization charge) to be dissolved in styrene has a cis content greater than 97%, (b) a portion, i.e. 5-15%, of the free-radical catalyst to be used is added at the beginning of the mass polymerization stage, i.e. at about 235.degree.-250.degree. F. after dissolving the rubber in the styrene, and (c) the addition of the major portion (about at least 85%) of the mercaptan chain regulator added is made at the time of the initiation of the mass polymerization stage when the temperature first reaches the temperature employed for mass polymerization (such temperature selected from the range of 235.degree.-250.degree. F.). The rubber used should have a viscosity as a 5% solution in toluene of 70-95 cps at 25.degree. C. Mineral oil, preferably high boiling, containing at least 20% saturated naphthenic hydrocarbons, is added in an amount of about 1.3% to about 2.3% of the reaction charge. The resulting product is exceptionally high in impact resistance.

    摘要翻译: 另外常规的两级(用于制造抗冲聚苯乙烯的大体悬浮聚合体系在几个方面进行改性:(a)待溶解在苯乙烯中的橡胶(约7%至约10%的聚合电荷)的顺式含量大于 97%,(b)一批自由基催化剂的一部分,即5-15%的自由基催化剂是在大规模聚合阶段开始时加入的,即将橡胶溶解在约235°-250°F 苯乙烯和(c)在质量聚合阶段开始时,当温度首次达到用于大量聚合的温度时,加入添加的硫醇调节剂的主要部分(约至少85%) (这种温度选自235°-250°F),使用的橡胶在25°C时应具有5%溶于甲苯的溶液70-95 cps的粘度。矿物油,优选高沸点,含有 加入至少20%的饱和环烷烃 约为反应电荷的1.3%至约2.3%。 所得产品的抗冲击性非常高。

    Process for preparing high impact polystyrenes
    3.
    发明授权
    Process for preparing high impact polystyrenes 失效
    制备高抗冲聚苯乙烯的方法

    公开(公告)号:US4212789A

    公开(公告)日:1980-07-15

    申请号:US935410

    申请日:1978-08-21

    申请人: Harry D. Anspon

    发明人: Harry D. Anspon

    IPC分类号: C08F279/02 C08K5/01

    CPC分类号: C08F279/02

    摘要: A process is described for preparing high impact polystyrenes by mass-suspension polymerization of styrene and a polybutadiene rubber having a vinyl isomer content of 11 to 22 percent. The high impact polystyrenes made by the disclosed process are useful for forming extruded sheet with balanced impact properties suited for deep draw thermoforming.

    摘要翻译: 描述了通过苯乙烯和乙烯基异构体含量为11〜22%的聚丁二烯橡胶的质量悬浮聚合制备高抗冲聚苯乙烯的方法。 通过公开的方法制备的高冲击聚苯乙烯可用于形成具有适于深拉伸热成型的平衡冲击性能的挤出片材。

    Polymer compositions and articles therefrom
    4.
    发明授权
    Polymer compositions and articles therefrom 失效
    聚合物组合物及其制品

    公开(公告)号:US4312802A

    公开(公告)日:1982-01-26

    申请号:US829411

    申请日:1977-08-31

    申请人: Harry D. Anspon

    发明人: Harry D. Anspon

    IPC分类号: C08F279/02 C08K5/01

    CPC分类号: C08F279/02

    摘要: Impact polystyrene resin compositions and articles fabricated from them are prepared from styrene and a polybutadiene rubber having a vinyl isomer content of 11 to 22 percent.

    摘要翻译: 由苯乙烯和乙烯基异构体含量为11〜22%的聚丁二烯橡胶制备抗冲聚苯乙烯树脂组合物及其制造的制品。