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Pigment Surface Modification via Nucleophilic Treating Agents

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Employing chemical reactions that modify particle surfaces to impart desirable physical-chemical properties has enjoyed enormous commercial success. One example is the surface modification of pigment particles for inkjet inks. As the applications of pigmented inkjet inks continue to grow, there is a need to modify a wider range of pigment types. The existence of many classes of pigments with various functional groups has presented challenges for the development of a general chemistry that can react with any pigments. As a result, inventing new ways of modifying pigment surfaces is important. In this report, treating agents having nucleophilic groups were used to modify Pigment Green 36 (PG36). When PG36 was modified with nucleophiles bearing water-soluble groups, pigment particles became water dispersible. Dispersions showed excellent colloidal stability and the color properties of PG36 have not been affected. This paper will also discuss the versatility of this chemistry for introducing a wide range of functional groups onto pigment particles that possess leaving groups.
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Document Type: Research Article

Publication date: 2006-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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