Process for preparing aqueous dispersion of pigment-containing polymer particles

A process for preparing an aqueous dispersion of pigment-containing polymer particles, comprising the steps of:

• (C) mixing an organic solvent solution of a polymer, water and optionally a neutralizing agent with each other to give a mixture (II);
• (D) removing the organic solvent from the mixture (II) obtained in step (C);
• (E) mixing a solvent-removed product obtained in step (D) with a pigment to give a mixture (III);
• and
• (F) subjecting the mixture (III) obtained in step (E) to a dispersion treatment.

A process for preparing an aqueous dispersion of pigment-containing polymer particles, comprising the steps of:

• (G) mixing an organic solvent solution of a polymer, water, pigment and optionally a neutralizing agent with each other to give a mixture (IV);
• (H) removing the organic solvent from the mixture (IV) obtained in step (G) by distillation under reduced pressure to give a solvent-removed product;
• and
• (I) subjecting the solvent-removed product obtained in step (H) to a dispersion treatment.

A process for preparing an aqueous dispersion of pigment-containing polymer particles, comprising the steps of:

• (C) mixing an organic solvent solution of a polymer, water and optionally a neutralizing agent with each other to give a mixture (II);
• (K) mixing the mixture (II) obtained in step (C) with a pigment to give a mixture (VI);
• (L) removing the organic solvent from the mixture (VI) obtained in step (K) to give a solvent-removed product;
• and
• (M) subjecting the solvent-removed product obtained in step (L) to a dispersion treatment.

A process for preparing an aqueous dispersion of pigment-containing polymer particles, comprising the steps of:

• (N) mixing an organic solvent solution of a polymer with a pigment to give a mixture (VII);
• (O) mixing the mixture (VII) obtained in step (N), water and optionally a neutralizing agent with each other to give a mixture (VIII);
• (P) removing the organic solvent from the mixture (VIII) obtained in step (O) by distillation under reduced pressure to give a solvent-removed product;
• and
• (Q) subjecting the solvent-removed product obtained in step (P) to a dispersion treatment.