Method for manufacturing charge control agent

Details Method for manufacturing charge control agent Method for manufacturing charge control agent

2004-10-07

2011-12-13

Powers, Fiona T (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

Reexamination Certificate

active

08076465

ABSTRACT:
A method for manufacturing a charge control agent comprising steps of:an initiative chelating step by reacting with a monoazo compound represented by the following chemical formula [1](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;a subsequent ion-exchanging step by reacting with the azo-type metal complex salt intermediate and an ammonium counter ion forming agent including an inorganic ammonium salt and aqueous ammonia to prepare an azo-type metal complex salt having an ammonium ion of a counter ion represented by the following chemical formula [2](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).

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