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    • 1. 发明授权
    • Positively charged developer compositions containing quaternized vinyl
pyridine polymers
    • 含有季铵化乙烯基吡啶聚合物的带正电荷的显影剂组合物
    • US4397935A
    • 1983-08-09
    • US342031
    • 1982-01-18
    • Roger N. CiccarelliThomas R. Hoffend
    • Roger N. CiccarelliThomas R. Hoffend
    • G03G9/08G03G9/10G03G9/113
    • G03G9/10G03G9/08G03G9/1134Y10S430/105
    • The present invention is directed to a developer composition comprised of resin particles, pigment particles, carrier particles, and a charge enhancing additive of the following formula ##STR1## wherein R is an alkyl radical containing from about 1 carbon atom to about 25 carbon atoms, A is an anion, and x, y and z are numbers representing the weight percent of monomer present, wherein z is equal to about 1 weight percent to about 50 weight percent, and the sum of x plus y is equal to 100 minus z, thus this sum is equal to about 50 weight percent to about 99 weight percent, accordingly, the total sum of x+y+z is equal to about 100 weight percent; which compositions are useful in causing the development of electrostatic latent images in electrostatographic imaging systems wherein the photoresponsive device utilized is charged negatively.
    • 本发明涉及包含树脂颗粒,颜料颗粒,载体颗粒和下式的电荷增强添加剂的显影剂组合物,其中R是含有约1个碳原子至约25个碳原子的烷基, A是阴离子,x,y和z是表示存在的单体的重量百分比的数字,其中z等于约1重量%至约50重量%,x加y的和等于100减去z, 因此,该总和等于约50重量%至约99重量%,因此,x + y + z的总和等于约100重量%; 这些组合物可用于引起静电成像系统中的静电潜像的显影,其中使用的光响应装置带负电。
    • 3. 发明授权
    • Random copolymers made by anionic polymerization, toners incorporating
these copolymers and method for the manufacture thereof
    • 通过阴离子聚合制备的无规共聚物,掺入这些共聚物的调色剂及其制造方法
    • US5532327A
    • 1996-07-02
    • US394580
    • 1995-02-27
    • Robert D. BayleyThomas R. HoffendTimothy J. FullerSuresh K. Ahuja
    • Robert D. BayleyThomas R. HoffendTimothy J. FullerSuresh K. Ahuja
    • C08F236/10C08F4/48
    • C08F236/10
    • A solution polymerization process for producing an organic polymer from styrene and at least one other polymerizable monomer comprising providing a liquid reaction medium suitable for conducting said polymerization, wherein the reaction medium contains styrene and a polymerizable monomer other than styrene; and, anionically polymerizing styrene and monomer, thereby forming random copolymer chains, wherein the total quantity of said styrene used in said polymerization is at least 50% by weight based on the total weight of styrene and other polymerizable monomers used in the polymerization. A second embodiment comprises a copolymer made by the above-described method.A third embodiment comprises a process for forming a toner, wherein the process comprises providing a liquid reaction medium suitable for conducting a solution polymerization, the reaction medium containing at least two polymerizable monomers; anionically polymerizing the monomers, thereby forming random and nearly random copolymer chains; finely dividing the copolymer into particles; and, incorporating said particles into a composition for use as a toner. A fourth embodiment comprises a toner made by extrusion with pigment or colorant and change control additive to form small particles.A fifth embodiment comprises a solution polymerization process for producing an organic polymer wherein a difunctional initiator is used to initiate said polymerization.
    • 一种从苯乙烯和至少一种其它可聚合单体制备有机聚合物的溶液聚合方法,包括提供适于进行所述聚合的液体反应介质,其中反应介质含有苯乙烯和除苯乙烯之外的可聚合单体; 并且阴离子聚合苯乙烯和单体,从而形成无规共聚物链,其中所述聚合中使用的所述苯乙烯的总量基于聚合中使用的苯乙烯和其它可聚合单体的总重量为至少50重量%。 第二实施方案包括通过上述方法制备的共聚物。 第三实施方案包括形成调色剂的方法,其中所述方法包括提供适于进行溶液聚合的液体反应介质,所述反应介质含有至少两种可聚合单体; 使单体阴离子聚合,从而形成无规和几乎无规的共聚物链; 将共聚物细分成颗粒; 并将所述颗粒结合到用作调色剂的组合物中。 第四实施方案包括通过与颜料或着色剂一起挤出而制成的调色剂和改变控制添加剂以形成小颗粒。 第五实施方案包括用于制备有机聚合物的溶液聚合方法,其中使用双官能引发剂引发所述聚合。