| 摘要 |
There are provided organic acid anion containing aluminum salt hydroxide particles represented by the following general formula (I): <?in-line-formulae description="In-line Formulae" end="lead"?>M<SUB>a</SUB>[Al<SUB>1-x</SUB>M'<SUB>x</SUB>]<SUB>b</SUB>A<SUB>z</SUB>B<SUB>y</SUB>(OH)<SUB>n</SUB>.mH<SUB>2</SUB>O (I) <?in-line-formulae description="In-line Formulae" end="tail"?> (wherein M is at least one cation selected from the group consisting of Na<SUP>+</SUP>, K<SUP>+</SUP>, NH<SUP>4+</SUP> and H<SUB>3</SUB>O<SUP>+</SUP>, M' is at least one metal cation selected from the group consisting of Cu<SUP>2+</SUP>, Zn<SUP>2+</SUP>, Ni<SUP>2+</SUP>, Sn<SUP>4+</SUP>, Zr<SUP>4+</SUP>, Fe<SUP>2+</SUP>, Fe<SUP>3+</SUP> and Ti<SUP>4+</SUP>, A is at least one organic acid anion, B is at least one inorganic acid anion, and a, b, m, n, x, y and z satisfy 0.7<=a<=1.35, 2.7<=b<=3.3, 0<=m<=5, 4<=n<=7, 0<=x<=0.6, 1.7<=y<=2.4, and 0.001<=z<=0.5, respectively.) The particles are in the shape of grains, pairs, rectangular parallelepiped, disks (go stones), hexagonal plates, rice grains or cylinders and have a uniform particle diameter.
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