Medium for electrophoresis
    1.
    发明授权
    Medium for electrophoresis 失效
    电泳培养基

    公开(公告)号:US4897306A

    公开(公告)日:1990-01-30

    申请号:US40486

    申请日:1987-04-20

    IPC分类号: B01D57/02 G01N27/447

    摘要: An improvement of a medium for electrophoresis which comprises a support of a plastic material and an aqueous polyacrylamide gel, wherein a resin layer comprises a resin having an oxygen permeability coefficient lower than that of the plastic material of the support is arranged betwen the support and the polyacrylamide gel. The resin preferably shows an oxygen permeability of not more than 15 cc/m.sup.2 .multidot.atm.multidot.day in the form of a resinous layer of 20 .mu.m thick, and exemplified by a vinylidene chloride-vinyl chloride copolymer, polyvinyl alcohol, polyacrylonitrile, polyvinylidene chloride, a vinyl alcohol-ethylene copolymer, a vinylidene chloride-acrylonitrile copolymer, and an acrylonitrile-methyl acrylate-butadiene copolymer.

    摘要翻译: 用于电泳的介质的改进,其包括塑料材料和聚丙烯酰胺凝胶水凝胶的载体,其中树脂层包括具有低于载体的塑料材料的氧透过系数的树脂,所述树脂层设置在载体和 聚丙烯酰胺凝胶。 树脂的透氧度优选为20μm以下的树脂层形式的不超过15cc / m 2×m×x的氧透过率,例如可列举出偏二氯乙烯 - 氯乙烯共聚物,聚乙烯醇,聚丙烯腈,聚偏二氯乙烯,乙烯醇 乙烯共聚物,偏二氯乙烯 - 丙烯腈共聚物和丙烯腈 - 丙烯酸甲酯 - 丁二烯共聚物。

    Manufacturing method for electrophotographic developing agent
    5.
    发明授权
    Manufacturing method for electrophotographic developing agent 失效
    电子照相显影剂的制造方法

    公开(公告)号:US3959153A

    公开(公告)日:1976-05-25

    申请号:US41647

    申请日:1970-05-28

    摘要: This invention is a method for manufacturing an electrophotographic developer for use in electrophotography or electrostatic recording processes. The developer comprises polymer particles by suspension polymerizing, in an aqueous phase, a polymerization liquid comprising at least one polymerizable vinyltype monomer, a polymerization initiator, and a finely divided dispersion stabilizer either sparingly soluble or insoluble in water and said monomer. Said polymerization liquid is blended prior to suspension polymerization. The improvement includes adding to said liquid, a resinous substance, as a fluidizer which is soluble in the monomer and having a solubility parameter in the range of from 7.8 to 16.1. During the blending, the dispersion stabilizer is uniformly dispersed throughout said polymerization liquid. Next, the blended polymerization liquid containing the fluidizer is suspended in the aqueous phase and then such blend is subjected to said suspension polymerization to effect polymer particles having diameters in the range of 0.1 to 100.mu..

    摘要翻译: 本发明是用于制造用于电子照相或静电记录方法的电子照相显影剂的方法。 显影剂包括聚合物颗粒,其在水相中悬浮聚合,其包含至少一种可聚合乙烯基型单体,聚合引发剂和微溶于或不溶于水和所述单体的细分散稳定剂。 所述聚合液体在悬浮聚合之前共混。 改进之处在于,向所述液体中添加可溶于单体并具有7.8〜16.1范围内的溶解度参数的流化剂的树脂状物质。 在共混期间,分散稳定剂均匀分散在整个聚合液体中。 接着,将含有流化器的共混聚合液悬浮在水相中,然后将这种共混物进行所述悬浮聚合,以实现直径在0.1至100μm范围内的聚合物颗粒。