Patent ID: 6297193
Filing Date: 2001-10-02
Classification: A01N,C01B,C01G,C01P,C09D

Abstract:
An antialgal method which comprises applying at least one solid solution selected from the group consisting of the compounds of the formulae (1) to (4),the compounds of the formulae (1) to (4) being a hydroxide solid solution of the formula (1),[(M.sub.1.sup.2+).sub.y (M.sub.2.sup.2+).sub.1-y ].sub.1-x M.sup.3+.sub.x (OH).sub.2 (A.sup.n-).sub.y/n.multidot.mH.sub.2 O (1)wherein y is a number in the range of 0.ltoreq.y.ltoreq.1, x is a number in the range of 0<x.ltoreq.0.5, m is a number in the range of 0.ltoreq.m.ltoreq.2, M.sub.1.sup.2+ is Zn.sup.2+ and/or Cu.sup.2+, M.sub.2+.sup.2+ is Mg.sup.2+ and/or Ca.sup.2+, M.sup.3+ is at least one trivalent metal, and A.sup.n- is an anion of n valence, an oxide solid solution of the formula (2),[(M.sub.1.sup.2+).sub.y (M.sub.2.sup.2+).sub.1-y ].sub.1-x M.sup.3+.sub.x-a O (2)wherein y is a number in the range of 0.ltoreq.y.ltoreq.1, x is a number in the range of 0<x.ltoreq.0.5, x-a means that the number of M.sup.3+ is decreased by a due to a lattice defect, and M.sub.1.sup.2+ and M.sub.2.sup.2+ have the same meanings as those defined in the formula (1), a hydroxide solid solution of the formula (3),(M.sub.1.sup.2+).sub.x (M.sub.2.sup.2+).sub.1-x (OH).sub.2 (3)wherein x is a number of 0.001.ltoreq.x<0.9, and M.sub.1.sup.2+ and M.sub.2.sup.2+ have the same meanings as those defined in the formula (1),and an oxide solid solution of the formula (4),(M.sub.1.sup.2+).sub.x (M.sub.2.sup.2+).sub.1-x Owherein x is a number of 0.001.ltoreq.x<0.9, and M.sub.1.sup.2+ and M.sub.2.sup.2+ have the same meanings as those defined in the formula (1), to an area in which algal growth is to be inhibited.