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    • 1. 发明授权
    • Water-based ink for ink-jet printing
    • 水性墨水用于喷墨打印
    • US08680174B2
    • 2014-03-25
    • US13140235
    • 2009-12-11
    • Atsushi HiraishiKyoichi ShirotaYuki WakabayashiYasuhiro Doi
    • Atsushi HiraishiKyoichi ShirotaYuki WakabayashiYasuhiro Doi
    • C09D11/00C08K9/00
    • C09D11/32
    • The present invention is directed to a water dispersion for ink-jet printing which realizes sufficient optical density and exhibits excellent filterability and storage stability; a water-based ink containing the water dispersion; and a process for producing the water dispersion or the water-based ink. The invention includes the following: (1) a water dispersion for ink-jet printing containing anionic colorant particles and cationic polymer particles, and a water-based ink for ink-jet printing containing the water dispersion; (2) a process for producing a water dispersion for ink-jet printing including a step of mixing a water dispersion of anionic colorant particles with a water dispersion of cationic polymer particles, to thereby produce a water dispersion of composite particles formed of the cationic polymer particles and the anionic colorant particles adhering thereto, and a water dispersion produced through the production process; and (3) a process for producing a water-based ink for ink-jet printing including step (A) of mixing a water dispersion of cationic polymer particles with a water-soluble organic solvent, or dispersing a cationic polymer in water and a water-soluble organic solvent, to thereby produce a dispersion containing the cationic polymer particles, water, and the water-soluble organic solvent; and step (B) of mixing the produced dispersion with a dispersion containing anionic colorant particles and water.
    • 本发明涉及一种用于喷墨印刷的水分散体,其实现了足够的光密度并表现出优异的过滤性和储存稳定性; 含有水分散体的水性油墨; 以及水分散体或水性油墨的制造方法。 本发明包括:(1)含有阴离子着色剂颗粒和阳离子聚合物颗粒的喷墨印刷用水分散体和含有水分散体的喷墨印刷用水性油墨; (2)一种喷墨印刷用水分散体的制造方法,包括将阴离子性着色剂粒子的水分散体与阳离子性聚合物粒子的水分散体混合的工序,由阳离子性聚合物形成的复合粒子的水分散体 颗粒和粘附在其上的阴离子着色剂颗粒,以及通过制备方法制备的水分散体; (3)制造喷墨印刷用水性油墨的方法,包括将阳离子聚合物颗粒的水分散体与水溶性有机溶剂混合,或将阳离子聚合物分散在水和水中的工序(A) 从而产生含有阳离子聚合物颗粒,水和水溶性有机溶剂的分散体; 和步骤(B)将所制备的分散体与含有阴离子着色剂颗粒和水的分散体混合。
    • 2. 发明申请
    • WATER-BASED INK FOR INK-JET PRINTING
    • 用于墨水印刷的水性墨水
    • US20110306708A1
    • 2011-12-15
    • US13140235
    • 2009-12-11
    • Atsushi HiraishiKyoichi ShirotaYuki WakabayashiYasuhiro Doi
    • Atsushi HiraishiKyoichi ShirotaYuki WakabayashiYasuhiro Doi
    • C08K5/3437
    • C09D11/32
    • The present invention is directed to a water dispersion for ink-jet printing which realizes sufficient optical density and exhibits excellent filterability and storage stability; a water-based ink containing the water dispersion; and a process for producing the water dispersion or the water-based ink. The invention includes the following: (1) a water dispersion for ink-jet printing containing anionic colorant particles and cationic polymer particles, and a water-based ink for ink-jet printing containing the water dispersion; (2) a process for producing a water dispersion for ink-jet printing including a step of mixing a water dispersion of anionic colorant particles with a water dispersion of cationic polymer particles, to thereby produce a water dispersion of composite particles formed of the cationic polymer particles and the anionic colorant particles adhering thereto, and a water dispersion produced through the production process; and (3) a process for producing a water-based ink for ink- jet printing including step (A) of mixing a water dispersion of cationic polymer particles with a water- soluble organic solvent, or dispersing a cationic polymer in water and a water-soluble organic solvent, to thereby produce a dispersion containing the cationic polymer particles, water, and the water-soluble organic solvent; and step (B) of mixing the produced dispersion with a dispersion containing anionic colorant particles and water.
    • 本发明涉及一种用于喷墨印刷的水分散体,其实现了足够的光密度并表现出优异的过滤性和储存稳定性; 含有水分散体的水性油墨; 以及水分散体或水性油墨的制造方法。 本发明包括:(1)含有阴离子着色剂颗粒和阳离子聚合物颗粒的喷墨印刷用水分散体和含有水分散体的喷墨印刷用水性油墨; (2)一种喷墨印刷用水分散体的制造方法,包括将阴离子性着色剂粒子的水分散体与阳离子性聚合物粒子的水分散体混合的工序,由阳离子性聚合物形成的复合粒子的水分散体 颗粒和粘附在其上的阴离子着色剂颗粒,以及通过制备方法制备的水分散体; (3)制造喷墨印刷用水性油墨的方法,其中包括将阳离子聚合物颗粒的水分散体与水溶性有机溶剂混合,或将阳离子聚合物分散在水和水中的步骤(A) 从而产生含有阳离子聚合物颗粒,水和水溶性有机溶剂的分散体; 和步骤(B)将所制备的分散体与含有阴离子着色剂颗粒和水的分散体混合。