发明名称 |
Process For Preparing An Aqueous Ink Jet Printing Ink |
摘要 |
A process for preparing an aqueous ink composition including 1) preparing a colorant concentrate; 2) preparing a colorant wax dispersion by (a) melting and mixing a dry colorant with at least one wax to form a colorant concentrate, wherein the colorant concentrate contains at least 25 percent by weight of colorant; (b) milling the colorant concentrate of step (a) to form a milled colorant concentrate; (c) combining the milled colorant concentrate of (b) with water and dispersing to form a colorant wax dispersion comprising a plurality of colorant wax particles comprising a colorant core surrounded by a wax shell, wherein the colorant wax particles exhibit a particle size distribution of from about 150 nanometers to less than about 300 nanometers; wherein the melting and mixing of step (a) and the milling of step (b) is done in an immersion media mill; and wherein the combining of step (c) is done using a piston homogenizer; and 3) blending the colorant wax dispersion with an aqueous ink vehicle and optional ink additives to form an aqueous ink composition; and filtering the aqueous ink composition. |
申请公布号 |
US2015299485(A1) |
申请公布日期 |
2015.10.22 |
申请号 |
US201414256939 |
申请日期 |
2014.04.19 |
申请人 |
Xerox Corporation |
发明人 |
Lee Frank Ping-Hay;Breton Marcel P.;Magdalinis Aurelian Valeriu;D'Amato Michael J.;Abraham Biby Esther |
分类号 |
C09D11/38;C09D191/06;C08K5/23;C08K5/3417;C08K5/20 |
主分类号 |
C09D11/38 |
代理机构 |
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代理人 |
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主权项 |
1. A process for preparing an aqueous ink composition comprising:
1) preparing a colorant concentrate; 2) preparing a colorant wax dispersion by (a) melting and mixing a dry colorant with at least one wax to form a colorant concentrate, wherein the colorant concentrate contains at least 25 percent by weight of colorant; (b) milling the colorant concentrate of step (a) to form a milled colorant concentrate; (c) combining the milled colorant concentrate of (b) with water and dispersing to form a colorant wax dispersion comprising a plurality of colorant wax particles comprising a colorant core surrounded by a wax shell, wherein the colorant wax particles exhibit a particle size distribution of from about 150 nanometers to less than about 300 nanometers; wherein the melting and mixing of step (a) and the milling of step (b) is done in an immersion media mill or a horizontal mill; and wherein the combining of step (c) is done using a piston homogenizer; and 3) blending the colorant wax dispersion with an aqueous ink vehicle and optional ink additives to form an aqueous ink composition; and filtering the aqueous ink composition. |
地址 |
Norwalk CT US |