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    Extruded foams having a monovinyl aromatic polymer with a broad molecular weight distribution
    4.
    发明授权
    Extruded foams having a monovinyl aromatic polymer with a broad molecular weight distribution 失效
    具有宽分子量分布的单乙烯基芳族聚合物的挤出泡沫

    公开(公告)号：US5650106A

    公开(公告)日：1997-07-22

    申请号：US667700

    申请日：1996-06-21

    申请人： Andrew N. Paquet ,  Duane B. Priddy ,  Chau V. Vo ,  William C. Pike ,  Jerry L. Hahnfeld

    发明人： Andrew N. Paquet ,  Duane B. Priddy ,  Chau V. Vo ,  William C. Pike ,  Jerry L. Hahnfeld

    IPC分类号： C08J9/12 ,  C08J9/14

    CPC分类号： C08J9/127 ,  C08J2203/142 ,  C08J2325/02

    摘要： Disclosed is an extruded, linear, bimodal monovinyl aromatic polymer foam having a weight average molecular weight of from about 100,000 to about 200,000, greater than 5 percent by weight of its polymer chains having a weight average molecular weight of 500,000 to 1,000,000, and less than 5 percent by weight of its polymer chains having a weight average molecular weight of greater than 1,000,000. Use of the polymer enables process pressure drop to be significantly reduced and allows the formation of a foam of lower density and larger cross-section. Further disclosed is a process for making the extruded foam.

    摘要翻译： 公开了一种挤出的线性单峰乙烯基芳族聚合物泡沫，其重均分子量为约100,000至约200,000，大于其重均分子量为500,000至1,000,000的聚合物链的5重量％，并且小于 5重量％的其重均分子量大于1,000,000的聚合物链。 使用聚合物可以显着降低工艺压降，并允许形成较低密度和较大横截面的泡沫。 进一步公开的是制造挤出泡沫的方法。

    Production of copolymers of .alpha.-methylstyrene
    5.
    发明授权
    Production of copolymers of .alpha.-methylstyrene 失效
    生产α-甲基苯乙烯的共聚物

    公开(公告)号：US4647632A

    公开(公告)日：1987-03-03

    申请号：US782604

    申请日：1985-09-30

    申请人： Duane B. Priddy

    发明人： Duane B. Priddy

    IPC分类号： C08F4/08 ,  C08F212/12

    CPC分类号： C08F212/12

    摘要： Copolymers of alpha-emthylstyrene and its like alkenyl aromatic monomers containing alpha-methyl substitution in the alkenyl portion of the monomer molecule (to provide alpha-methyl-alkenyl aromatic), particularly the copolymers of .alpha.-methylstyrene with styrene, which exhibit excellent homogeneity are produced with anionic catalyst initiation in, most advantageously, solution systems using intensive backmixing, recirculatory sorts of reactor unit apparatus in which to conduct the copolymerization by continuously charging a feed stream to the reactor of the mixed monomers to be copolymerized in which the ratio of .alpha.-methylalkenyl aromatic monomer to sytrene or other non-.alpha.-methyl-containing-alkenyl aromatic monomer is kept in unusually low relative proportions while keeping the reaction mass in which the copolymer is being formed in nicely homogeneous mixture.

    摘要翻译： 在单体分子的烯基部分（以提供α-甲基 - 链烯基芳族化合物），特别是α-甲基苯乙烯与苯乙烯的共聚物中，α-乙烯基苯乙烯及其类似烯基芳族单体的共聚物在单体分子的链烯基部分中具有优异均匀性的共聚物是 由阴离子催化剂起始制备，最有利的是使用密集回混的溶液体系，再循环型反应器单元装置，其中通过将进料流连续加入待共聚的混合单体的反应器进行共聚，其中α 甲基链烯基芳族单体与苯乙烯或其它非α-甲基链烯基芳族单体保持相当低的相对比例，同时保持共聚物形成在良好均匀的混合物中的反应物质。

    Heterocyclic peroxides
    7.
    发明授权
    Heterocyclic peroxides 失效
    杂环过氧化物

    公开(公告)号：US3947418A

    公开(公告)日：1976-03-30

    申请号：US512283

    申请日：1974-10-04

    申请人： Duane B. Priddy

    发明人： Duane B. Priddy

    IPC分类号： C07D295/096 ,  C08F4/34 ,  C07D295/10

    CPC分类号： C07D295/096 ,  C08F4/34

    摘要： Heterocyclic nitrogen-containing peroxides are prepared by reacting a tertiary alkyl hydroperoxide with a nitrogen heterocycle substituted by cycloalkene such as 1-(4-morpholinyl)cyclohexene. The products are useful initiators of vinyl polymerization where a peroxide initiator of relatively high thermal stability is desirable.

    摘要翻译： 杂环的含氮过氧化物是通过使叔烷基过氧化氢与被环烯烃如1-（4-吗啉基）环己烯取代的氮杂环反应来制备的。 该产物是乙烯基聚合的有用引发剂，其中期望具有相对高的热稳定性的过氧化物引发剂。