Patent ID: 6367486
Filing Date: 2002-04-09
Classification: B08B,B24B,C09D,C11D,C23G,G03F,H01L

Abstract:
A process for removing photoresist from a substrate which comprises contacting the substrate with a composition comprising from about 17.5% to about 50% by weight of at least one ethylenediaminetetraacetic acid or a mono-, di-, tri- or tetraammonium salt thereof; from about 25% to about 75% by weight of a polar organic solvent; from about 0.15% to about 10% by weight of an ammonium salt selected from the group consisting of ammonium tartrate, ammonium citrate, ammonium formate, ammonium glucomate, ammonium fluoride, ammonium nitrate, ammonium thiosulfate, ammonium persulfate, ammonium bicarbonate, and ammonium phosphate and water, for a time and at a temperature sufficient to remove the photoresist or other polymeric material from the substrate.