PHOTORESIST STRIPPER COMPOSITION AND METHOD OF USE

摘要

An improved process for removing crosslinked photoresist polymer from printed circuit boards which comprises contacting the printed circuit board with dichloromethane (methylene chloride) containing from 5 to 10 volume percent of a mixture of methanol and methyl methanoate (methyl formate). Each additive must be present at a minimum concentration of one volume percent. Stabilizers for the dichloromethane, such as epoxides, may be present at amounts no greater than 0.5 volume percent.