Patent ID: 6136071
Filing Date: 2000-10-24
Classification: B01D,Y02C

Abstract:
A process for the capture of volatile compounds contained in a gaseous environment wherein the gaseous environment is contacted with a calixarene, the process comprising contacting said gaseous environment containing at least one low molecular component (VLC) having a dipole polarizability of from about 2.25*10.sup.-24 cm.sup.3 to about 4.7*10.sup.-24 cm.sup.3 with (a) at least one, calixarene of the formula I: ##STR3## wherein n is an integer from 1 to 7, R is hydrogen, a hydrocarbon radical, hydroxy, amino, carboxy (--COOH), sulfo (--SO.sub.3 H) or halogen, a halogen containing radical, or a nitrogen, sulfur or phosphorus containing radical, andR' independently has one of the meanings defined for R or is --Si(CH.sub.3).sub.3, or(b) at least one resorcinol calixarene of formulae II or III: ##STR4## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen or an organic radical;said gaseous environment being contacted with a bed of solid bodies which are impregnated or coated with at least one compound of formulae I, II or III, or washed with a liquid containing at least one of the compounds of formulae I, II or III in dissolved or dispersed state.