| abstract |
PROBLEM TO BE SOLVED: To provide a highly concentrated aqueous dispersion containing hydrophilic metal oxide fine particles and a dispersion aid. An aqueous dispersion containing metal oxide fine particles and a dispersion aid, wherein at least one general formula (I) is used as the dispersion aid. [Chemical 1] (Where M is hydrogen, a monovalent or divalent metal cation, an ammonium ion, an organic amine group, a is 1, or 1/2 when M is a divalent metal ion, X is likewise —OM a or —O— (C p H 2p O) q —R 1 , where R 1 is H, an aliphatic hydrocarbon having 1 to 20 carbon atoms Groups, alicyclic hydrocarbon groups having 5 to 8 carbon atoms, optionally substituted aryl groups having 6 to 14 carbon atoms, p = 2 to 4, q = 0 to 100, —NHR 2 and / or —NR 2 2 (wherein R 2 is R 1 or —CO—NH 2 )), Y is O, NR 2 , Al is an ethylene group, a propylene group, an isopropylene group, a butylene group, m is 10 to 30, n is 0-50, k is an aqueous dispersion in which a compound of 10 to 30 (where m + k is in the range of 20 to 60, preferably in the range of 20 to 40)) is used in combination. |