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    • 1. 发明授权
    • Process for producing aqueous resin dispersion
    • 生产水性树脂分散体的方法
    • US5179158A
    • 1993-01-12
    • US564479
    • 1990-08-09
    • Kishiro AzumaYoshio MoriMasayoshi Okubo
    • Kishiro AzumaYoshio MoriMasayoshi Okubo
    • C08F2/24C08F2/26C08F290/04
    • C08F290/046C08F290/044
    • A process for producing an aqueous resin dispersion is disclosed, which comprises dissolving a macromonomer having a radical polymerizable group at the terminal thereof and an oil-soluble radical polymerization initiator in a hydrophobic vinyl monomer copolymerizable with the macromonomer to form a solution, emulsifying the solution in an aqueous medium in the presence of an emulsifying agent selected from (A) an alkali sulfosuccinate anionic surfactant and (B) a surfactant comprising from 2 to 98% by weight of (i) an alkali sulfonate anionic surfactant other than (A) or (ii) an alkali sulfuric ester anionic surfactant, and from 98 to 2% by weight of a nonionic surfactant having an HLB value of 10 or more, and copolymerizing the macromonomer and the vinyl monomer at an elevated temperature. The aqueous resin dispersion has a high content of a graft polymer with a reduced content of unreacted macromonomer.
    • 公开了一种水性树脂分散体的制造方法,其特征在于,将其末端具有自由基聚合性基团的大分子单体和油溶性自由基聚合引发剂溶解在与大分子单体共聚的疏水性乙烯基单体中,形成溶液, 在(A)碱金属磺基琥珀酸盐阴离子表面活性剂和(B)包含2-98重量%的(ⅰ)除(A)之外的碱金属磺酸盐阴离子表面活性剂的表面活性剂的存在下,在水性介质中, (ii)碱硫酸酯阴离子表面活性剂和98〜2重量%HLB值为10以上的非离子表面活性剂,并在高温下共聚大分子单体和乙烯基单体。 含水树脂分散体具有高含量的未反应的大分子单体含量降低的接枝聚合物。
    • 4. 发明授权
    • Electrophotographic toner made by polymerizing monomers in solution in
presence of colorant
    • 通过在着色剂存在下在溶液中聚合单体而制备的电子照相色调剂
    • US4777104A
    • 1988-10-11
    • US867923
    • 1986-05-29
    • Tsunetaka MatsumotoMasayoshi OkuboToshiro Tokuno
    • Tsunetaka MatsumotoMasayoshi OkuboToshiro Tokuno
    • G03G9/08C08J3/20
    • G03G9/0806Y10S524/901
    • Disclosed is a process in which a spherical electrophotographic toner containing a colorant and having a particle size suitable for the electrophotography is directly formed in the polymerization process for formation of a binder resin. If a reaction medium capable of dissolving a monomer but incapable of dissolving a formed polymer is used and polymerization is carried out in the presence of a radical polymerization initiator in the state where the monomer, the colorant and other additives are dissolved or dispersed in the reaction medium, an electrophotographic toner having a desired particle size is obtained. According to this process, the particle size of the colored resin is stably controlled to 1 to 30 .mu.m suitable for a toner in the polymerization process, and the particle size distribution is very sharp.
    • 公开了一种在形成粘合剂树脂的聚合方法中直接形成含有着色剂并具有适于电子照相的粒度的球形电子照相调色剂的方法。 如果使用能够溶解单体但不能溶解形成的聚合物的反应介质,并且在单体,着色剂和其它添加剂溶解或分散在反应中的状态下,在自由基聚合引发剂的存在下进行聚合 得到具有所需粒径的电子照相调色剂。 根据该方法,将着色树脂的粒径稳定地控制在聚合过程中适用于调色剂的1〜30μm,并且粒度分布非常清晰。