Superabsorbent polymer absorption time is slow

    公开(公告)号:JP2007505193A

    公开(公告)日:2007-03-08

    申请号:JP2006526366

    申请日:2004-09-10

    CPC classification number: A61L15/60

    Abstract: 本発明は、a)約55〜約99.9重量%の、モノマーを含む重合可能な不飽和酸基と、b)約0.001〜約5.0重量%の内部架橋剤と、c)約0.001〜約5.0重量%の、粒子表面に塗布される表面架橋剤とを含み、d)組成は約20%より高い中和度を有し、約75℃以下の温度で、約20モル%〜約75モル%のモノマーを含む不飽和酸基が第1の中和剤で中和され、約5モル%〜約40モル%のモノマーを含む不飽和酸基が第2の中和剤で中和される、親水性の高吸収ポリマーに関するものである。 このような親水性の高吸収ポリマーは、約5+10a
    2 分以上の吸収時間を有し、aは高吸収物質の平均粒子サイズをミリメートル単位で表したものであり、約15g/g以上の容量と、約2秒以下の液滴浸透値と、50%以下の1/2浮遊飽和率とを有する。

    ADDITIVE INTO WATER AND METHOD FOR FIRE PREVENTION AND EXTINGUISHING OF FIRE

    公开(公告)号:JPH09140826A

    公开(公告)日:1997-06-03

    申请号:JP15166396

    申请日:1996-05-22

    Abstract: PROBLEM TO BE SOLVED: To generate a water-additive mixture having sufficiently high viscosity such as one immediately sticking to vertical and horizontal panes by including a water swelling polymer cross-linked in a water in oil emulsion generated by reversed phase polymerization reaction caused by mixing an additive with water. SOLUTION: An additive is generated by reversed phase polymerization, and is a liquid emulsion, and a swollen emulsion polymer reacts in the presence of water, and forms fluid having uniform and high viscosity. A generated water- additive mixture has relatively high viscosity for a short swelling time, and easily sticks the mixture on both vertical and horizontal planes. When the water-additive mixture is injected on a surface 22, several millions of additive molecules 24 are stacked on mutual upper parts, and the molecules 24 are filled with water, and when fire approaches the surface, the external molecules 24 closest to the fire absorb heat up to reaching a boiling point of water. Next, the next layer absorbs heat up to reaching the boiling point of water, shields an inner layer of remaining molecules.

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