Abstract: A curing composition including: 100 parts by weight of (1) titanium oxide particles coated with oxide of one or more metal elements selected from the group consisting of silicon, aluminum, titanium, zirconium, tin, antimony and zinc, 1 to 150 parts by weight of (2) a curing compound, and 0.1 to 100 parts by weight of (3) acuring catalyst. An antireflective multilayer body (16) which successively includes, on a substrate layer (12), a high-refractive-index film (10) which is formed by curing this curing composition and has a refractive index of 1.60 or more and a low-refractive-index film (14) having a lower refractive index than that thereof exhibits excellent antireflection effect in the field in which an antireflection film is used.

Abstract: A coating composition excellent in dispersion stability of a photocatalyst even in a highly hydrophobic alcohol, excellent in storage stability, giving a coating layer excellent in durability and adhesion, and having a photocatalytic function, which comprises (a) at least one component selected from the group consisting of an organosilane represented by (R1)nSi (OR2)4-n (wherein, R1 represents a monovalent organic group; R2 represents an alkyl group or an acyl group; and n is an integer ranging from 0 to 2), a hydrolyzate and a condensates thereof; (b) an organosiloxane oligomer having an SiO bond and a specific Mw; (c) a photocatalyst; and (d-1) an organic solvent having a surface tension at 20° C. of 260 &mgr;N/cm or less.

Abstract: A coating composition excellent in dispersion stability of a photocatalyst even in a highly hydrophobic alcohol, excellent in storage stability, giving a coating layer excellent in durability and adhesion, and having a photocatalytic function, which comprises (a) at least one component selected from the group consisting of an organosilane represented by (R1)nSi (OR2)4-n (wherein, R1 represents a monovalent organic group; R2 represents an alkyl group or an acyl group; and n is an integer ranging fram 0 to 2), a hydrolyzate and a condensates thereof; (b) an organosiloxane oligomer having an SiO bond and a specific Mw; (c) a photocatalyst: and (d-1) an organic solvent having a surface tension at 20° C. of 260 &mgr;N/cm or less.

Abstract: A tyrosinase inhibiting agent acts specifically on tyrosinase to inhibit it; the effective component of this action being an inhibitor of tyrosinase consisting of tea polyphenols.

Abstract: The effective ingredient in the inventive inhibitive agent against activity of a .alpha.-amylase is tea, e.g., black tea, or a tea polyphenol as a constituent of tea including epigallocatechin gallate, epicatechin gallate, epigallocatechin, epicatechin, (+)catechin and the isomer thereof, free theaflavin, theaflavin monogallates A and B and theaflavin digallate.