Modified metal oxide sol

摘要

Disclosed is a modified metal oxide sol that has a large hydrophilizing effect and antistatic effect, can be produced at low cost and is capable of being a coating. Specifically disclosed is a modified metal oxide sol characterized by modification by a functional group represented by formula (1) at 0.55-5.5 mmol per 1 g of metal oxide sol. MOS(═O)2—R1—Si(CH3)n(—O—)3-n (1) {In the formula, M is a hydrogen ion, C1-4 alkyl group, metal ion or ammonium (NR24) group; Rl is a C1-10 alkylene group (may have urethane bonds or urea bonds in the main alkylene chain); R2 may be the same or different and is a C1-5 alkyl group or a hydrogen atom; and n represents 0 or 1}.

主权项

1. A modified metal oxide sol, wherein a metal oxide sol is chemically modified with a functional group represented by the following formula (1) in an amount of 0.55 to 5.5 mmol per gram of the sol:
MOS(═O)2—R1—Si(CH3)n(—O—)3-n  (1){wherein M is an alkyl group having 1 to 4 carbon atoms, a metal ion, or an ammonium (NR24) group, R1 is an alkylene group having 1 to 10 carbon atoms, R2s, which may be the same or different, are each an alkyl group having 1 to 5 carbon atoms or a hydrogen atom, and n represents 0 or 1}.