Patent ID: 6379875
Filing Date: 2002-04-30
Classification: G03F,Y10T

Abstract:
A method for preparing integrated circuits comprising one or more polymeric materials to be removed comprising the steps of;a) contacting the polymeric material with a pretreatment composition comprising one or more one or more polyol compounds, one or more glycol ethers, water and one or more surfactants for a period of time sufficient to pretreat the polymeric material; b) removing the polymeric material from contact with the pretreatment composition; and c) then contacting the polymeric material with a polymer stripping composition; wherein the pretreatment composition is substantially free of amines, alkanolamines, hydroxylamines, tetraalkylammonium hydroxides, ammonium bifluoride, ammonium-tetramethylammonium bifluoride, and alkali metal hydroxides.