Semisuspension polymerization processes
    32.
    发明授权
    Semisuspension polymerization processes 失效
    半悬浮聚合工艺

    公开(公告)号:US5852140A

    公开(公告)日:1998-12-22

    申请号:US37192

    申请日:1993-03-25

    CPC分类号: C08F2/001 C08F4/00

    摘要: Disclosed is a process for the preparation of a polymer which comprises effecting bulk polymerization of a mixture of at least one monomer, a free radical polymerization initiator, and a stable free radical agent until from about 10 to about 50 weight percent of the monomer has been polymerized; optionally adding additional free radical initiator; optionally adding a colorant; dispersing with a high shear mixer the aforementioned partially polymerized mixture in water containing a stabilizing component selected from the group consisting of non-ionic and ionic water soluble polymeric stabilizers to obtain a suspension of particles with an average diameter of from about 0.1 to about 10 microns; polymerizing the resulting suspension to form said polymer.

    摘要翻译: 公开了一种制备聚合物的方法,其包括进行至少一种单体,自由基聚合引发剂和稳定自由基试剂的混合物的本体聚合,直到约10至约50重量%的单体已经 聚合的 任选地加入另外的自由基引发剂; 任选地加入着色剂; 用高剪切混合器将上述部分聚合的混合物在含有选自非离子和离子水溶性聚合物稳定剂的稳定组分的水中分散,以获得平均直径为约0.1至约10微米的颗粒悬浮液 ; 聚合所得悬浮液以形成所述聚合物。

    Polymerization process and toner compositions therefrom
    35.
    发明授权
    Polymerization process and toner compositions therefrom 失效
    聚合方法和调色剂组合物

    公开(公告)号:US5401804A

    公开(公告)日:1995-03-28

    申请号:US181134

    申请日:1994-01-13

    摘要: Disclosed is a free radical polymerization process for the preparation of a thermoplastic resin or resins comprising heating a mixture of a free radical initiator, a stable free radical agent, and at least one polymerizable monomer compound to form a thermoplastic resin or resins with a high monomer to polymer conversion; cooling said mixture; optionally isolating the thermoplastic resin or resins; and optionally washing and drying thermoplastic resin or resins.Related free radical processes are also disclosed for the preparation of mixtures and block copolymer thermoplastic resins. Resins prepared by the disclosed processes possesses a narrow polydispersity and a modality that is controlled by the selection of a free radical initiator and stable free radical agent addition step or steps.

    摘要翻译: 公开了一种用于制备热塑性树脂或树脂的自由基聚合方法,包括加热自由基引发剂,稳定自由基和至少一种可聚合单体化合物的混合物以形成具有高单体的热塑性树脂或树脂 聚合物转化; 冷却混合物; 任选地分离热塑性树脂或树脂; 并任选地洗涤和干燥热塑性树脂或树脂。 还公开了相关的自由基方法用于制备混合物和嵌段共聚物热塑性树脂。 通过公开的方法制备的树脂具有窄的多分散性和通过选择自由基引发剂和稳定的自由基添加步骤控制的形态。

    Polyalkyl styrene butadiene toner compositions
    37.
    发明授权
    Polyalkyl styrene butadiene toner compositions 失效
    聚烷基苯乙烯丁二烯调色剂组合物

    公开(公告)号:US5114820A

    公开(公告)日:1992-05-19

    申请号:US428134

    申请日:1989-10-27

    IPC分类号: G03G9/087

    CPC分类号: G03G9/08737 Y10S430/105

    摘要: A toner composition comprised of pigment particles and a branched polyalkyl/styrene/butadiene copolymer of the following formula ##STR1## wherein m, n and o are weight fraction numbers, p represents the number of CH.sub.2 groups, R is hydrogen or alkyl, and R' is carbonyloxy or aryl.

    摘要翻译: 由颜料颗粒和下式(IMAGE)的支链多烷基/苯乙烯/丁二烯共聚物组成的调色剂组合物,其中m,n和o是重量分数,p表示CH 2基数,R是氢或烷基,R '是羰氧基或芳基。

    Processes for the preparation of styrene butadiene resins
    40.
    发明授权
    Processes for the preparation of styrene butadiene resins 失效
    苯乙烯丁二烯树脂的制备方法

    公开(公告)号:US5166028A

    公开(公告)日:1992-11-24

    申请号:US304160

    申请日:1989-01-31

    摘要: A dispersion polymerization process for the preparation of styrene butadiene polymers with an average particle diameter of from about 0.1 to about 200 microns, which comprises (1) formation of a homogenous reaction medium, containing styrene and butadiene monomers in the presence of a steric stabilizer and a chain propagating amount of an initiator; and (2) heating said homogeneous reaction medium under pressure permitting polymerization thereby resulting in the formation of insoluble styrene butadiene polymer particles.

    摘要翻译: 用于制备平均粒径为约0.1至约200微米的苯乙烯丁二烯聚合物的分散聚合方法,其包括(1)在空间稳定剂存在下形成含有苯乙烯和丁二烯单体的均匀的反应介质,和 链传播量的引发剂; 和(2)在允许聚合的压力下加热所述均相反应介质,从而形成不溶性苯乙烯丁二烯聚合物颗粒。