Anti-fogging agent
AssigneeCeko Co., Ltd.
InventorsMasahiro Satoh, Satsuki Kitajima
Life of this patent
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Abstract
A transformed metal oxide sol, according to the present invention, has as main components: a hydrolysis product of a surface-active silane coupling agent, a transformed metal oxide sol which has been transformed by means of a hydrolysis product of a surface-active silane coupling agent, or a mixture and/or a condensate of the hydrolysis product of the surface-active silane coupling agent and the transformed metal oxide sol which has been transformed by means of the hydrolysis product of the surface-active silane coupling agent; and a mixture of transformed metal oxide sols which have been transformed by means of sulfur-containing functional groups, wherein a raw metal oxide sol of the transformed metal oxide sol is preferably an organosilica sol.
Claims12
A modified metal oxide sol comprising a mixture and/or condensation product of
- a hydrolysate of a surface-active silane coupling agent, a modified metal oxide sol that is modified by a hydrolysate of the surface-active silane coupling agent or a mixture and/or condensation product of a hydrolysate of the surface-active silane coupling agent and a modified metal oxide sol that is modified by a hydrolysate of surface-active silane coupling agent;
- and
- a modified metal oxide sol that is modified by a functional group containing sulfur (S) (hereinafter referred as “a functional group containing S-modified metal oxide sol”) as main components,
- wherein the surface-active silane coupling agent is a reaction product of a compound represented by the following Formula (1) and a silane coupling agent having a functional group which can react with active hydrogen of Formula (1), and the functional group containing S-modified metal oxide sol is a modified metal oxide sol in which 0.5 mmol or more of metal oxide sol based on 1 g of metal oxide sol is modified by a functional group represented by the following Formula (2):
- R1—X—(CH2CH2O)n—Y (1)
- wherein R1 is C1 to C20 alkyl group (the alkyl group may comprise a benzene ring and double bond);
- X is —O—, —COO— or —CONH—;
- n is a natural number of 1 to 30;
- and
- Y is hydrogen or —CH2COOH;
- MOS(═O)2—R2—Si(CH3)n(—O—)3-n (2)
- wherein M is hydrogen ion, C1 to C4 alkyl group, a metal ion or an ammonium group (NR34);
- R2 is C1 to C10 alkylene group (the alkylene chain may comprise urethane linkage or urea linkage);
- R3 is the same or different C1 to C5 alkyl group or hydrogen;
- and
- n is 0 or 1.
Dependencies are inferred from the claim text.