PRODUCTION OF ANTIMICROBIAL SAND

Japanese Patent JP3490168

B2

PURPOSE: To obtain antimicrobial sand by mixing an antimicrobial metal-contg, specific phosphate and zinc oxide or titanium dioxide with vitreous power and sand followed by heating to soften the vitreous powder and carry the antimicrobial agent on the surface of the sand.
CONSTITUTION: First, vitreous powder and sand are mixed with zinc oxide or titanium dioxide and an antimicrobial agent of formula I (M1 is a monovalent metal ion selected from Ag, Cu, Zn, Sn, Hg, Pb, Fe, Co, Ni, Mn, As, Sb, Bi, Ba, Cd and Cr; A is an m-valent ion selected from alkali metal, alkaline earth metal, ammonium and H ions; (n) is 0-6; (a) and (b) are each a positive number satisfying (1a+mb)=1 or 2; (c) and (d) are such that, when (1a+mb)=1, (c) is 2, and (d) is 3, and when (1a+mb)=2, (c) is 1 and (d) is 2) (e.g. a compound of formula II). Secondly, the mixture is heated to a temperature higher than the softening temperature of the vitreous powder to soften the powder and to make the antimicrobial agent carry on the surface of the sand via the vitreous powder, thus obtaining the objective antimicrobial sand, which is excellent in sustainability and antimicrobial effect.

Ryojiro Taniguchi
Koji Sugiura
Hideki Kato

JP1559595A

January 26, 2004

January 06, 1995

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Toagosei Co., Ltd.
Seto Soil Co., Ltd.

A01K1/015; A01K29/00; A01N25/08; A01N25/26; A01N25/34; A01N59/16; A01N59/20; A63C19/00; A63G31/00; (IPC1-7): A01N59/16; A01K1/015; A01N25/08; A01N25/26; A01N25/34; A01N59/20

JP873302A
JP6172113A
JP6298616A
JP2213350A
JP2306904A
JP6305922A

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