Method for manufacturing charge control agent
US8076465B2 · kind B2 · utility
1Cited by
12References
8Claims
0Family size
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Key dates
| Filing date | Oct 7, 2004 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Oct 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for manufacturing a charge control agent comprising steps of: (in the chemical formula [1], —Ar1— and —Ar2— are aromatic groups) and a metal chelating agent to prepare an azo-type metal complex salt intermediate; (in the chemical formula [2], —Ar1— and —Ar2— are the same as the chemical formula [1]; M is a trivalent metal; B+ is a cation except an ammonium ion; n is from 0.70 to 1.00).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.