Abstract: The present skin cosmetics comprising cocoon-shaped polymer fine particles having an average particle size of 1 to 8 ?m and cosmetic vehicles show an effect of making fine wrinkles on the skin unnoticeable, letting the skin appear smoother and fairer.

Abstract: Previously proposed skin cosmetics have been compounded with spherical resin particles for the purpose of improving extendability on the skin, improving feel, and making fine wrinkles unnoticeable. However, these particles are insufficient in their effect of making fine wrinkles on the skin unnoticeable, and there has been demand for fine particles that let the skin appear smooth and fair. The present skin cosmetics comprising cocoon-shaped polymer fine particles having an average particle size of 1 to 8 ?m and cosmetic vehicles show an effect of making fine wrinkles on the skin unnoticeable, letting the skin appear smoother and fairer.

Abstract: A process for producing 4,4'-diphenyldisulfonic acid is disclosed, which comprises the steps of adding a sulfonating agent to molten diphenyl at a temperature within a range of 130.degree. to 145.degree. C., and when crystallization commences of 4,4'-diphenyldisulfonic acid within such temperature range, cooling the reaction mixture to a temperature within a range of 115.degree. to 127.degree. C., and letting the disulfonation reaction complete while the reaction mixture is maintained within the cooled temperature range. A process for producing monopotassium 4,4'-diphenyldisulfonate is also disclosed, in which steps are taken of adding a sulfonating agent to diphenyl, then controlling the sulfuric acid concentration to 45 to 55%, and while the reaction mixture is heated to at least 140.degree. C., adding at least a stoichiometric amount of a potassium salt of an inorganic acid.

Abstract: A process for preparing o-phenylphenol by dehydrogenating at least one of cyclohexanone dimer and o-cyclohexylphenol in the presence of a catalyst, characterized in that the catalyst is one prepared by causing a metal oxide carrier to support at least one compound substantially producing platinum or palladium on the resulting catalyst, at least one compound substantially producing an alkali metal oxide on the resulting catalyst and at least one of hydrogen sulfide, organic sulfur compound and alkali metal sulfide, and heating the carrier at 300.degree. to 400.degree. C.

Abstract: A process for preparing o-phenylphenol by dehydrogenating at least one of cyclohexanone dimer and o-cyclohexylphenol in the presence of a catalyst, characterized in that the catalyst comprises a metal oxide carrier, and at least one of alkali metal salts of sulfur-oxygen acids and at least one of platinum and palladium supported by the carrier.