Patent ID: 6093749
Filing Date: 2000-07-25
Classification: B82Y,C01G,C01P,C09C,C09K

Abstract:
An anhydrous zinc antimonate sol comprising surface-modified anhydrous zinc antimonate colloid particles dispersed in a liquid, said surface-modified anhydrous zinc antimonate colloid particles comprising anhydrous zinc antimonate colloid particles as nuclei and a silicon-containing substance coating surfaces of the colloid particles, said sol containing an amine, an hydroxycarboxylic acid or a mixture thereof,wherein said silicon-containing substance is at least one silicon-containing substance selected from the group consisting of a compound represented by general formula (I) below:(R.sup.1).sub.a (R.sup.3).sub.b Si(OR.sup.2).sub.4-(a+b) (I)wherein R.sup.2 and R.sup.3 independently represent an alkyl group, an aryl group, a halogenated alkyl group, a halogenated aryl group, an alkenyl group, or an organic group having an epoxy, acryloyl, methacreyloyl, mercapto, amino or cyano group, and the organic group being bonded to the silicon atom through a Si--C bond, R.sup.2 contains 1 to 8 carbon atoms and represents an alkyl group, an alkoxyalkyl group or an acyl group,a and b are each 0, or an integer of 1 or 2, provided that a+b is 0, or an integer of 1 or 2 and a compound represented by general formula (II) below :((R.sup.4).sub.c Si(OX).sub.3-c).sub.2 Y (II)wherein R.sup.4 represents an alkyl group having 1 to 5 carbon atoms, X represents an alkyl or acyl group having 1 or 4 carbon atoms, Y is a methylene group, an alkylene group having 2 to 20 carbon atoms, or an imino group, c is 0 or an integer of 1, 2 or 3 and their hydrolysates.