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    Filler for heat-sensitive recording paper
    1.
    发明公开
    Filler for heat-sensitive recording paper 失效
    FüllstofffürwärmeempfindlichesAufzeichnungspapier。

    公开(公告)号：EP0135976A1

    公开(公告)日：1985-04-03

    申请号：EP84300533.1

    申请日：1984-01-27

    申请人： MIZUSAWA INDUSTRIAL CHEMICALS LTD.

    发明人： Usui, Koichi ,  Ogawa, Masahide ,  Goto, Kunio ,  Sato, Teiji ,  Tanaka, Masanori ,  Takahashi, Seikichi ,  Ono, Kinichi ,  Kojima, Seiji

    IPC分类号： B41M5/26 ,  C01B33/193

    CPC分类号： C01B33/193 ,  B41M5/3377 ,  C01P2002/02 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/19 ,  Y10T428/254 ,  Y10T428/259 ,  Y10T428/2982 ,  Y10T428/31942

    摘要： Particulate material suitable for use as a filler for the heat-sensitive recording layer of heat-sensitive recording paper comprises finely divided amorphous silica having a BET specific surface area of 10 to 100 m 2 /g and a bulk density of 0.14 to 0.30 g/cc, said finely divided amorphous silica having such a secondary particle size distribution that secondary particles having a size smaller than 4 µm, as measured by the centrifugal precipitation method, constitute at least 90% by weight of the total particles. A composite filler for the heat-sensitive recording layer of heat-sensitive recording paper comprises amorphous silica having the same BET specific surface area and bulk density and such a secondary particle size distribution that secondary particles having size smaller than 4 pm, as measured by the centrifugal precipitation method, constitute at least 70% by weight of the total particles, and fine particles of amino resin obtained by condensing substantially equimolar amounts of a functional amino group-containing component and a formaldehyde component in the presence of a catalyst and which has an oil absorption of 20 to 90 mi/100 g and a specific surface area smaller than 20 m 2 /g, at a weight ratio of amorphous silica: amino resin particles of from 90:10 to 10:90.

    摘要翻译： 适合用作热敏记录纸的热敏记录层的填料的颗粒材料包括BET比表面积为10-100m 2 / g的细碎无定形二氧化硅，堆积密度为0.14-0.30 g / cc，所述细碎的无定形二氧化硅具有二次粒度分布，其通过离心沉淀法测量的具有小于4μm的尺寸的二次颗粒构成总颗粒的至少90重量％。 用于热敏记录纸的热敏记录层的复合填料包括具有相同的BET比表面积和体积密度的无定形二氧化硅和具有尺寸小于4μm的二次颗粒的二次粒度分布，如通过 所述离心沉淀法占所述总颗粒的至少70重量％，以及通过在催化剂存在下使基本上等摩尔量的含官能氨基的组分和甲醛组分冷凝而获得的氨基树脂的细颗粒， 20至90ml / 100g的吸油量和小于20m 2 / g的比表面积，无定形二氧化硅：氨基树脂颗粒的重量比为90:10至10:90。