Substantially flat surfaced vinyl polymer emulsion particles having a
concavity and process for preparing them
    5.
    发明授权
    Substantially flat surfaced vinyl polymer emulsion particles having a concavity and process for preparing them 失效
    具有凹面的基本平坦的表面的乙烯基聚合物乳液颗粒和用于制备它们的方法

    公开(公告)号:US4948772A

    公开(公告)日:1990-08-14

    申请号:US373427

    申请日:1989-06-30

    摘要: Substantially flat surfaced emulsion particles polymerized vinyl monomer, having a concavity in at least one of the flat surfaces, a diameter D of from 0.1 to 5.0 .mu.m, and a particle diameter thickness d ratio (d/D) of 1.2 to 5.0, prepared by the step of (1) aqueous emulsion polymerizing a first vinyl monomer or mixture of monomers (a) to form vinyl polymer seed particles; and (2) aqueous emulsion polymerizing a second vinyl monomer or mixture of monomers (b) in the presence of the vinyl polymer seed particles and a non-aqueous organic solvent having a surface tention to water at 20.degree. C. of 48 dyne/cm or more, in a weight ratio of monomer (a) to monomer (b) of 0.5/99.5 to 50/50; and are useful in high performance recording material, paint compositions and paper coating compositions.

    摘要翻译: 基本上平坦的表面乳状颗粒聚合的乙烯基单体在至少一个平坦表面具有凹度,直径D为0.1-5.0μm,粒径厚度d比(d / D)为1.2-5.0,制备 通过(1)水乳液聚合第一乙烯基单体或单体(a)的混合物以形成乙烯基聚合物种子颗粒的步骤; 和(2)在乙烯基聚合物种子颗粒和表面具有表达水的20℃下的48达因/厘米的非水有机溶剂的存在下,使第二乙烯基单体或单体(b)的混合物聚合的水性乳液 以上,单体(a)与单体(b)的重量比为0.5 / 99.5〜50/50; 并且可用于高性能记录材料,涂料组合物和纸涂料组合物中。

    Substantially flat surfaced vinyl polymer emulsion particles having a
concavity and process for preparing them
    6.
    发明授权
    Substantially flat surfaced vinyl polymer emulsion particles having a concavity and process for preparing them 失效
    具有凹面的基本平坦的表面的乙烯基聚合物乳液颗粒和用于制备它们的方法

    公开(公告)号:US5401800A

    公开(公告)日:1995-03-28

    申请号:US26242

    申请日:1993-03-01

    摘要: Substantially flat surfaced emulsion particles polymerized vinyl monomer, having a concavity in at least one of the flat surfaces, a diameter D of from 0.1 to 5.0 .mu.m, and a particle diameter thickness d ratio (d/D) of 1.2 to 5.0 prepared by the step of (1) aqueous emulsion polymerizing a first vinyl monomer or mixture of monomers (a) to form vinyl polymer seed particles; and (2) aqueous emulsion polymerizing a second vinyl monomer or mixture of monomers (b) in the presence of the vinyl polymer seed particles and a non-aqueous organic solvent having a surface tention to water at 20.degree. C. of 48 dyne/cm or more, in a weight ratio of monomer (a) to monomer (b) of 0.5/99.5 to 50/50; and are useful in high performance recording material, paint compositions and paper coating compositions.

    摘要翻译: 基本上平坦的表面乳状颗粒聚合的乙烯基单体在至少一个平坦表面具有凹陷,直径D为0.1-5.0μm,粒径d(D / D)为1.2-5.0,由 (1)水乳液聚合第一乙烯基单体或单体混合物(a)以形成乙烯基聚合物种子颗粒的步骤; 和(2)在乙烯基聚合物种子颗粒和表面具有表达水的20℃下的48达因/厘米的非水有机溶剂的存在下,使第二乙烯基单体或单体(b)的混合物聚合的水性乳液 以上,单体(a)与单体(b)的重量比为0.5 / 99.5〜50/50; 并且可用于高性能记录材料,涂料组合物和纸涂料组合物中。

    Heat-sensitive recording material
    10.
    发明授权

    公开(公告)号:US5210066A

    公开(公告)日:1993-05-11

    申请号:US631933

    申请日:1990-12-21

    IPC分类号: B41M5/337 B41M5/44

    CPC分类号: B41M5/44 B41M5/3372

    摘要: A heat-sensitive recording material wherein a copolymer emulsion is employed, the copolymer emulsion being obtained by copolymerizing a monomer component which comprises (meth)acrylamide and an optional unsaturated monomer component copolymerizable with (meth)acrylamide in the presence of a seed emulsion serving as a nucleating particle. In the heat-sensitive recording material, the intermediate layer, the heat-sensitive recording layer or the protective layer comprises the copolymer emulsion. The recordinq layer and the resulting recorded images of such a heat-sensitive recording material have sufficient durability (such as water resistance, heat resistance, resistance to plasticizers and resistance to solvents) and the resistance to heat softening of the protective layer. The heat-sensitive recording material can be produced through easy process control and is excellent in color developing sensitivity.