Patent ID: 6916772
Filing Date: 2005-07-12
Classification: C11D,G03F

Abstract:
1. A composition for stripping photoresist from substrates comprising: about 5% to about 50% by weight of an alkyl substituted pyrrolidone, an alkyl substituted piperidone, or a mixture thereof; about 0.2% to about 20% of one or more alkanolamines, and about 50% to about 94% of a sulfoxide, sulfoxone, or mixture thereof, wherein the composition removes copper from a copper substrate at a rate of less than about 10 Å per minute when the substrate is immersed in the composition which is held at 70° C. for 30 minutes and rotated relative to the composition at about 200 revolutions per minute; and wherein the composition comprises no more than about 2% water.