Invention Grant
US09122182B2 Charge control agent and toner for electrostatic image development containing same 有权
充电控制剂和含有其的静电图像显影用调色剂

Charge control agent and toner for electrostatic image development containing same
Abstract:
Provided is a charge control agent comprising a phenol multimeric mixture of a plurality of phenol multimers of the formula (1). A is a 4-chlorophenol ring-containing group of the formula (2) or the formula (3), R1-R4 are hydrogen atoms or alkyl groups, m is an integer of 0-2, and x is an integer of 16-28, when A is represented by the formula (2), and a number in the range indicated by (14−2m)/(m+2) to (26−2m)/(m+2), when A is represented by the formula (3):
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