Patent ID: 9079989
Filing Date: 2015-07-14
Classification: C07C,C08F,G03G,Y10S

Abstract:
1. A charge control agent, comprising: a charge control resin as an active ingredient, obtained by a process comprising polymerizing from 0.01 to 9.5 mol % of a styrene derivative with a vinyl group-containing monomer in the presence of a polymerization initiator, which is a co-polymerization product of the styrene derivative and the vinyl group-containing monomer, wherein the styrene derivative has formula (3): wherein, in formula (3): each R R g is a number of 1-3; h is a number of 1-3; and M is a hydrogen atom, an alkali metal, a straight-chained alkyl group having 1-18 carbon atoms, a branched alkyl group having 1-18 carbon atoms, an ammonium radical, or a mixture thereof.