Patent ID: 6492513
Filing Date: 2002-12-10
Classification: B01D,B01J,C07D

Abstract:
A method for separating a lactone-containing high-molecular weight compound having an alkyl group as its side chain from a lactone-containing high-molecular weight compound having an alkenyl group as its side chain, said lactone-containing high-molecular weight compounds having a common basic chemical structure, by using a sulfonic acid group-containing cation exchange resin treated with silver ions, wherein said common basic chemical structure of the lactone-containing high-molecular weight compounds is 1,14-dihydroxy-12-[2-(4-hydroxy-3-methoxycyclohexyl)-1-methylvinyl]-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo-[22.3.1.04.9]octacos-18-ene-2,3,10,16-tetraone.