Ink jet ink comprising encapsulated pigment dispersions with minimal free polymer
    3.
    发明授权
    Ink jet ink comprising encapsulated pigment dispersions with minimal free polymer 有权
    喷墨油墨包含具有最小游离聚合物的包封的颜料分散体

    公开(公告)号:US09200170B2

    公开(公告)日:2015-12-01

    申请号:US14118558

    申请日:2011-12-15

    摘要: The present disclosure provides an inkjet ink comprising an aqueous vehicle and an encapsulated pigment dispersion. A process for encapsulating pigment dispersions is provided where a pigment is dispersed with a polymeric dispersant in an aqueous solvent system. The free polymer dispersant in the pigment dispersion is limited to less than 0.12 grams per gram of pigment. This dispersed pigment is then encapsulated by adding acrylate monomers and optionally acrylic and vinyl monomers and polymerizing. In the encapsulated pigment dispersion the weight ratio of final free polymer to polymer found to the final encapsulated pigment is less than 0.9. The free polymer dispersant is measured by a centrifugation method and the final free polymer is measured by a density gradient centrifugation method. Such encapsulated pigment dispersions may be used in inkjet inks and are stable to heat, aging test conditions, and solvent challenges. Prints from these inks have better durability.

    摘要翻译: 本公开提供了包含水性载体和包封的颜料分散体的喷墨油墨。 提供了一种用于包封颜料分散体的方法,其中颜料与聚合物分散剂在水性溶剂体系中分散。 颜料分散体中的游离聚合物分散剂限于每克颜料少于0.12克。 然后通过加入丙烯酸酯单体和任选的丙烯酸和乙烯基单体并聚合来将该分散的颜料包封。 在包封的颜料分散体中,最终的游离聚合物与最终胶囊化颜料发现的聚合物的重量比小于0.9。 通过离心法测定游离聚合物分散剂,通过密度梯度离心法测定最终的游离聚合物。 这种包封的颜料分散体可以用于喷墨油墨中,并且对于热,老化试验条件和溶剂挑战是稳定的。 这些油墨的印刷具有更好的耐久性。

    METHOD OF PREPARING ENCAPSULATED PIGMENT DISPERSIONS WHICH INCLUDE POLYURETHANE DISPERSIONS
    4.
    发明申请
    METHOD OF PREPARING ENCAPSULATED PIGMENT DISPERSIONS WHICH INCLUDE POLYURETHANE DISPERSIONS 有权
    制备渗透色素的方法,包括聚氨酯分散体

    公开(公告)号:US20140011941A1

    公开(公告)日:2014-01-09

    申请号:US14005958

    申请日:2011-12-15

    IPC分类号: C09D11/00

    摘要: A process for encapsulating pigment dispersions is provided where a pigment is dispersed with a polymeric dispersant in an aqueous solvent system. An acrylate monomer and a polyurethane dispersion are added and the resultant mixture is polymerized. Optionally, the acrylate monomer/polyurethane mixture may be emulsified in water with an added surfactant or polymeric dispersant and up to 20% acrylic or other vinyl monomers based on the acrylate may be added to the acrylate monomer/polyurethane mixture before polymerization. Such encapsulated pigment dispersions may be used in inkjet inks and are stable to heat, aging test conditions, and solvent challenges. Prints from these inks have better durability.

    摘要翻译: 提供了一种用于包封颜料分散体的方法,其中颜料与聚合物分散剂在水性溶剂体系中分散。 加入丙烯酸酯单体和聚氨酯分散体,并将所得混合物聚合。 任选地,丙烯酸酯单体/聚氨酯混合物可以用添加的表面活性剂或聚合物分散剂在水中乳化,并且可以在聚合之前将至多基于丙烯酸酯的20%丙烯酸或其它乙烯基单体加入到丙烯酸酯单体/聚氨酯混合物中。 这种包封的颜料分散体可以用于喷墨油墨中,并且对于热,老化试验条件和溶剂挑战是稳定的。 这些油墨的印刷具有更好的耐久性。