Patent ID: 6765077
Filing Date: 2004-07-20
Classification: C08F

Abstract:
A negative-chargeability control resin comprising a vinyl copolymer having a glass transition temperature Tg from 30Â° C. to 120Â° C. obtained by copolymerizing a monomer composition which contains at least a vinyl monomer represented by the following formula (1) or (2) and a vinyl monomer having as a functional group a carboxyl group or a carboxyl group made into salt structure: wherein R1 represents a hydrogen atom or a methyl group; and R2 and R3 each represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms which can be substituted with a substituent except for an acid group, or R2 and R3 may combine chemically to form a heterocyclic ring having 4 to 20 carbon atoms, or R2 and R3 may form a cyclic structure having at least one atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom and having 4 to 19 carbon atoms; or wherein R4 represents an alkyl group having 1 to 20 carbon atoms, or an aromatic group.