| abstract |
PURPOSE: To effectively separate a phenolic compound from a solution containing the compound without steam, an acid or an alkali by making the phenol compound selectively adsorb on a strong acidic action exchange resin adjusted to a salt type as an adsorbing agent. n CONSTITUTION: A solution containing a phenolic compound such as phenol, catechol, resorcinol, hydroquinone, orcin, urushinol, pyrogallol, phloroglucin, hydroxyhydroquinone, salicylic acid, hydroxybenzoic acid, protocatechuic acid, gentisic acid, resorcylic acid, orsellinic acid, caffeic acid, umbellic acid, gallic acid or hydroxyphthalic acid is brought into a strong acidic ion exchange resin adjusted to a salt type to selectively adsorb the compound thereon, thereby efficiently separating the compound from the solution without exposing the compound to a strong atmosphere as by conventional methods or without an acid an alkali or steam. n COPYRIGHT: (C)1992,JPO&Japio |