Water-based printing ink aqueous dispersions and water-based printing ink

摘要

In the print quality, the water-based printing can leveling properties, ink permeability and so excellent, good color development, and water-based printing ink having a high gloss pigment-dispersed state, also the storage stability, when used in water-based printing ink It is another object to provide an aqueous printing ink containing the same ink and aqueous dispersion. Obtained by radical copolymerization with (b) (meth) acrylic acid ester and (c) a monomer containing an alkylene oxide chain represented by (a) and the following general formula (1) monomer having an acid group in the presence of alkali-soluble copolymer to be of (A), the mass ratio alkali-soluble copolymer (A) and a hydrophobic monomer (d), by hydrophobic monomer (d) aqueous printing inks aqueous dispersion characterized in that it is obtained by emulsion polymerization in a ratio to be 70 to 40: alkali-soluble copolymer (A): (d) = 30~60 hydrophobic monomer and it is water-based printing ink containing the same._{CH ²} = ^C_{(R 1)} -M- (CH ₂ CH _{2 O)} m - (CH ₂ CH (CH _{3) O)} n -R ₂ ----- (1) (However, or or _H, H, CH _{3, C} 2 H _{5, 5,} M C 6 H is _CH 2 O or COO, m is 0 to 23, 0 to 15 and n is 3, ^{R 2}_CH and ^{R 1} ,. a m + n ≧ 1)