| US 7,465,349 B1 | ||
| Method of making nanosized particles of monoazo laked pigment | ||
| Rina Carlini, Oakville (Canada); Karl W. Dawson, Calgary (Canada); Sandra J. Gardner, Oakville (Canada); and C. Geoffrey Allen, Waterdown (Canada) | ||
| Assigned to Xerox Corporation, Norwalk, Conn. (US) | ||
| Filed on Nov. 01, 2007, as Appl. No. 11/933,471. | ||
| Application 11/933471 is a continuation in part of application No. 11/759913, filed on Jun. 07, 2007. | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. C09B 67/20 (2006.01); C09B 63/00 (2006.01); C09B 41/00 (2006.01) | ||
| U.S. Cl. 106—496 [106/402; 534/579] | 22 Claims |
| 1. A process for preparing nanoscale particles of monoazo laked pigments, comprising:
providing an organic pigment precursor to a monoazo laked pigment that contains at least one functional moiety,
providing a sterically bulky stabilizer compound that contains at least one functional group, and
carrying out a chemical reaction to form a monoazo laked pigment composition, whereby the functional moiety found on the pigment
precursor is incorporated within the monoazo laked pigment and non-covalently associated with the functional group of the
stabilizer, so as to allow the formation of nanoscale-sized pigment particles.
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