Aqueous pigment dispersion for ink-jet ink and ink-jet ink...

Details Aqueous pigment dispersion for ink-jet ink and ink-jet ink... Aqueous pigment dispersion for ink-jet ink and ink-jet ink...

C - Chemistry, Metallurgy

09

D

C09D 11/00 (2006.01)

Patent

CA 2538116

An aqueous pigment dispersion for ink-jet inks which contains C.I. Pigment Yellow 74, a styrene/acrylic resin having an acid value of 100 to 250, and a basic compound, wherein the styrene/acrylic resin comprises styrene monomer units, acrylic acid monomer units, and methacrylic acid monomer units as constituent monomer units and has a weight-average molecular weight of 7,000 to 15,000.

L'invention concerne une dispersion aqueuse de pigments destinée à des encres pour jet d'encre, qui contient le pigment jaune 74 C.I., une résine styrène/acrylique présentant un indice d'acidité compris entre 100 et 250, et un composé basique. La résine styrène/acrylique comprend des unités monomères de styrène, des unités monomères d'acide acrylique et des unités monomères d'acide méthacrylique comme unités monomères constitutives, et présente une masse moléculaire moyenne en poids comprise entre 7000 et 15000.

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