METHOD OF PREPARING ENCAPSULATED PIGMENT DISPERSIONS WHICH INCLUDE POLYURETHANE DISPERSIONS
    16.
    发明申请
    METHOD OF PREPARING ENCAPSULATED PIGMENT DISPERSIONS WHICH INCLUDE POLYURETHANE DISPERSIONS 审中-公开
    制备包含聚氨酯分散剂的包封色素的方法

    公开(公告)号:WO2012148476A2

    公开(公告)日:2012-11-01

    申请号:PCT/US2011/065011

    申请日:2011-12-15

    Abstract: 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.

    Abstract translation: 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。

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