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    • 43. 发明授权
    • Toner process
    • 调色剂过程
    • US5698223A
    • 1997-12-16
    • US829551
    • 1997-03-28
    • Walter MychajlowskijGuerino G. SacripanteRaj D. PatelGrazyna E. Kmiecik-Lawrynowicz
    • Walter MychajlowskijGuerino G. SacripanteRaj D. PatelGrazyna E. Kmiecik-Lawrynowicz
    • G03G9/08G03G9/087
    • G03G9/0804G03G9/08768
    • A process for the preparation of toner comprising (i) solubilizing an imide based resin in water at pH of from about 10 to about 13 and which solubilizing is accomplished in the presence of nonionic surfactants and anionic surfactants; followed by precipitating the resulting dissolved imide resin into colloidal particles with a size diameter of from about 20 nanometers to about 500 nanometers, and which precipitating is accomplished with a high shearing device operating at a speed of from about 500 to about 2,000 revolutions per minute; acidifying the resulting mixture to a pH of from about 2 to about 4; (ii) preparing a pigment dispersion in water, which dispersion is comprised of a pigment, an oppositely charged ionic surfactant and optionally charge control agent; (iii) shearing (i) and (ii), thereby causing a flocculation of the resin, pigment, surfactants, and optional charge control agent; (iv) heating the resulting flocculent mixture of (iii) with stirring at a temperature of from about 25.degree. C. to about 1.degree. C. below the glass transition temperature (Tg) of the imide resin to effect formation of electrostatically bounded toner sized aggregates, and wherein the imide resin has a Tg of from about 45.degree. C. to about 65.degree. C.; (v) heating the resulting aggregate suspension of (iv) in the presence of additional anionic surfactant selected in an amount of from about 0.01 to about 5 weight percent based on the weight percent of the total reaction mixture solids, and which heating is at a temperature of from about 10.degree. C. to about 55.degree. C. above the Tg of the imide resin; and optionally cooling, and optionally (vi) separating said toner by washing, and thereafter drying said toner.
    • 一种制备调色剂的方法,包括(i)将酰亚胺基树脂溶解在约10至约13的pH下,并且在非离子表面活性剂和阴离子表面活性剂存在下进行增溶; 然后将所得溶解的酰亚胺树脂沉淀成尺寸直径为约20纳米至约500纳米的胶体颗粒,并且以约500至约2000转/分钟的速度运行的高剪切装置完成沉淀; 将所得混合物酸化至约2至约4的pH; (ii)在水中制备颜料分散体,该分散体由颜料,相反电荷的离子表面活性剂和任选的电荷控制剂组成; (iii)剪切(i)和(ii),从而引起树脂,颜料,表面活性剂和任选的电荷控制剂的絮凝; (iv)在低于酰亚胺树脂的玻璃化转变温度(Tg)的约25℃至约1℃的温度下搅拌加热得到的(ⅲ)絮状混合物,以形成静电有界调色剂尺寸 聚集体,并且其中所述酰亚胺树脂的Tg为约45℃至约65℃。 (v)在所选择的另外的阴离子表面活性剂存在下加热得到的(iv)聚集体悬浮液,其量为总反应混合物固体的重量百分比为约0.01至约5重量%,加热为 温度高于酰亚胺树脂的Tg约10℃至约55℃; 并任选地冷却,并且任选地(vi)通过洗涤分离所述调色剂,然后干燥所述调色剂。
    • 49. 发明授权
    • Toner processes
    • 墨粉处理
    • US06984480B2
    • 2006-01-10
    • US10603449
    • 2003-06-25
    • Daryl VanbesienMichael A. HopperRaj D. Patel
    • Daryl VanbesienMichael A. HopperRaj D. Patel
    • G03G9/08
    • G03G9/0804G03G9/09725
    • A process comprising heating a mixture of colorant and latex in the presence of a coagulant and a silicate salt, and wherein said heating comprises a first heating equal to or below about the glass transition temperature of a polymer contained in said latex, and a second heating equal to or about the glass transition temperature of a polymer contained in said latex; wherein said first heating enables the formation of aggregates and said second heating enables the fusion of said colorant and said polymer; and optionally wherein said silicate is contained in an alkali metal hydroxide.
    • 一种方法,包括在凝结剂和硅酸盐存在下加热着色剂和胶乳的混合物,并且其中所述加热包括等于或低于所述胶乳中包含的聚合物的玻璃化转变温度的第一加热,和第二加热 等于或约为所述胶乳中包含的聚合物的玻璃化转变温度; 其中所述第一加热使得能够形成聚集体,并且所述第二加热使得所述着色剂和所述聚合物融合; 并且任选地,其中所述硅酸盐包含在碱金属氢氧化物中。
    • 50. 发明授权
    • Toner aggregation processes
    • 调色剂聚合过程
    • US06210853B1
    • 2001-04-03
    • US09657340
    • 2000-09-07
    • Raj D. PatelMichael A. HopperEmily L. MooreGuerino G. Sacripante
    • Raj D. PatelMichael A. HopperEmily L. MooreGuerino G. Sacripante
    • G03G9087
    • G03G9/08708G03G9/0806G03G9/0819G03G9/08711G03G9/08755
    • A process for the preparation of toner including (i) gerating by emulsion polymerization in the presence of an initiator a first resin latex emulsion; (ii) generating by polycondensation a second resin latex optionally in the presence of a catalyst; (iib) dispersing the resin of (ii) in water; (iii) mixing (iib) with a colorant thereby providing a colorant dispersion; (iiib) mixing the resin latex emulsion of (i) with the resin/colorant mixture of (iii) to provide a blend of a resin and colorant; (iv) adding an aqueous inorganic cationic coagulant solution of a polymeric metal salt and optionally an organic cationic coagulant to the resin/colorant blend of (iiib); (v) heating at a temperature of from about 5 to about 10 degrees Centigrade below the resin Tg of (i), to thereby form aggregate particles and which particles are optionally at a pH of from about 2 to about 3.5; (vi) adjusting the pH of (v) to about 6.5 to about 9 by the addition of a base; (vii) heating the aggregate particles of (v) at a temperature of from about 5 to about 50 degrees Centigrade above the Tg of the resin of (i), followed by a reduction of the pH to from about 2.5 to about 5 by the addition of an acid resulting in coalesced toner; (viii) optionally isolating the toner.
    • 一种制备调色剂的方法,包括(i)在引发剂存在下通过乳液聚合第一树脂胶乳乳液; (ii)任选地在催化剂存在下通过缩聚产生第二树脂胶乳; (iib)将(ii)的树脂分散在水中; (iii)将混合(iib)与着色剂混合,从而提供着色剂分散体; (iiib)将(i)的树脂胶乳乳液与(iii)的树脂/着色剂混合物混合以提供树脂和着色剂的共混物; (iv)将聚合金属盐和任选的有机阳离子凝结剂的无机阳离子凝结剂水溶液加入到(iiib)的树脂/着色剂混合物中; (v)在(i)的树脂Tg以下约5至约10摄氏度的温度下加热,从而形成聚集体颗粒,并且哪些颗粒任选处于约2至约3.5的pH值; (vi)通过添加碱将(v)的pH调节至约6.5至约9; (vii)在(i)的树脂的Tg以上约5至约50摄氏度的温度下加热(ⅴ)的聚集体颗粒,随后将pH降低至约2.5至约5 加入导致聚结的调色剂的酸; (viii)任选地分离调色剂。