公开(公告)号：US5645968A

公开(公告)日：1997-07-08

申请号：US726600

申请日：1996-10-07

申请人： Guerino G. Sacripante ,  Maureen M. Kedian ,  Raj D. Patel ,  Walter Mychajlowskij ,  Beng S. Ong

发明人： Guerino G. Sacripante ,  Maureen M. Kedian ,  Raj D. Patel ,  Walter Mychajlowskij ,  Beng S. Ong

IPC分类号： G03G9/087 ,  G03G9/08

CPC分类号： G03G9/0804

摘要： A process for the preparation of toner comprising(i) preparing, or providing a cationic emulsion resin latex comprised of a resin derived from at least one olefinic nonpolar monomer, a cationic olefinic monomer, a cationic free radical initiator, and optionally a chain transfer agent in an aqueous mixture comprised of a nonionic surfactant and a cationic surfactant, and which mixture is heated at a temperature of from about 60.degree. C. to about 95.degree. C.;(ii) adjusting the pH of said cationic latex to from about 10 to about 14 by the addition of a base;(iii) preparing, or providing a pigment dispersion, which dispersion is comprised of a pigment and an anionic surfactant, and optionally a charge control agent;(iv) shearing said pigment dispersion with the pH adjusted latex of (ii) and heating below about the resin Tg to form electrostatically bound toner size aggregates, and optionally adding a cationic surfactant to stabilize the size of the toner aggregates; and(v) heating said electrostatically bound toner size aggregates above about the Tg of the resin to form coalesced toner particles; followed by optionally filtering, washing and drying the toner obtained.

摘要翻译： 一种制备调色剂的方法，包括（i）制备或提供由至少一种烯属非极性单体衍生的树脂，阳离子烯烃单体，阳离子自由基引发剂和任选的链转移剂组成的阳离子乳液树脂胶乳 在由非离子表面活性剂和阳离子表面活性剂组成的含水混合物中，将混合物在约60℃至约95℃的温度下加热; （ii）通过加入碱将所述阳离子胶乳的pH调节至约10至约14; （iii）制备或提供颜料分散体，该分散体由颜料和阴离子表面活性剂以及任选的电荷控制剂组成; （iv）用（ii）的pH调节的胶乳剪切所述颜料分散体，并加热到树脂Tg附近，以形成静电结合的调色剂尺寸聚集体，以及任选地加入阳离子表面活性剂以稳定调色剂聚集体的尺寸; 和（v）在所述树脂的Tg附近加热所述静电结合的调色剂尺寸聚集体以形成聚结的调色剂颗粒; 然后任选地过滤，洗涤和干燥获得的调色剂。