Abstract: This invention provides an article which is capable of being repositioned on a surface while adhering to the surface prior to being bound to the surface. The article, such as a wall covering, has an adhering surface coated with a base adhesive layer, and a low tack adhesive layer containing microparticles. A method of producing an article is also provided.

Abstract: A process for the preparation of 4,4'-dihydroxybiphenyl having high purity by hydrolyzing 4,4'-dibromobiphenyl in the presence of a hydrolysis catalyst in an alkaline aqueous solution, separating the catalyst from the alkaline aqueous solution, acidifying the alkaline aqueous solution with an acid to form crude solid 4,4'-dihydroxybiphenyl, separating the 4,4'-dihydroxybiphenyl, dissolving the 4,4'-dihydroxybiphenyl in an inert organic solvent which is preferably at an elevated temperature, adding water to the inert organic solvent mixture which allows the inorganic salt that may be present to remain in solution and the 4,4'-dihydroxybiphenyl begins to precipitate out of solution and recovering the precipitated solid 4,4'-dihydroxybiphenyl having high purity.

Abstract: A process for the preparation of 4,4'-dihydroxybiphenyl by hydrolyzing 4,4'-dibromobiphenyl in the presence of a copper compound catalyst containing copper in the plus two oxidation state. The process involves only one extraction.