Patent ID: 6355671
Filing Date: 2002-03-12
Classification: A61P,B01D,B01J

Abstract:
A sulfonic acid compound of a cyclic phenol sulfide represented by formula (1): (wherein X represents a hydrogen atom, a hydrocarbon group, or an acyl group; M represents a hydrogen atom, an alkyl group, a metal, an ammonium, a (lower-alkyl)ammonium, a (lower-alkanol)ammonium, a nitrogen-containing heterocyclic group, or an amino acid residue; Z represents Sm, SO, or SO2; m is an integer of from 1 to 7; and n is an integer of from 4 to 12, with the proviso that the plural X's, M's and Z's are each the same or different, and at least one of the plural M's is neither a hydrogen atom nor an alkyl group).