| 摘要 |
PROBLEM TO BE SOLVED: To obtain an oil ink excellent in redispersibility, shelf life stability, etc., by dispersing resin particles obtained by polymerizing a monofunctional macromonomer having a specific structure. SOLUTION: Under presence of a dispersion stable resin soluble to a nonaqueous solvent, at least one kind of monofunctional monomer and at least one kind of monofunctional macromonomer produced by bonding a polymerizable double bond group shown by formula II (V represents -COO- or the like, b<1> and b<2> may be identical or different and represent same contents as a<1> and a<2> in formula I) only to one end of main chain comprising repetitive units shown by formula I (X<0> represents COO- or the like, a<2> and a<2> may be identical or different and each represents a hydrogen atom, a halogen atom, or the like, D<0> represents an aliphatic group, or the like, of 8C or above) are polymerized to produce nonaqueous dispersion resin particles which are then dispersed into a nonaqueous solvent to obtain an oil ink excellent in dispersion stability, redispersibility, and shelf life stability. |
