Ciba formed a joint venture with Olin Hunt, called Olin Ciba Geigy (OCG), which then became Olin Microelectronic Materials. I believe they still handle the Polyimide/chemicals there in Rhode Island.Try calling Toni Z. Bray, Product Manager, tel 401-431-5388 ********************************************************* Mac McReynolds Sr. R&D Process Engineer Caliper Technologies email: mac@calipertech.com www.calipertech.com > ---------- > From: Jong In Song > Reply To: Jong In Song;mems-cc@ISI.EDU > Sent: Thursday, October 15, 1998 10:26 AM > To: MEMS@ISI.EDU > Subject: Polyimide stripper > > I have been looking for a polyimide stripper that can resolve a cured > polyimide (commercial products from Ciba Geigy 285 and Dupont PI 25XX > cured > ~250 C for ~ 1hr). I used such product manufactured by Ciba-Geigy > (product > number: QZ????) a long time ago (~ 6 year ago) while I was in the States. > I > was told that Ciba-Geigy discontinued the product and another company > became > a new manufacturer of it. Does anybody know which company produce such > products ? The QZ???? did not attack materials used for semiconductor > device processing such as semiconductors (Si, GaAs, InP, etc), dielectrics > (Silicon dioxide, nitride), and metals (Ti, Ni, Pt, Au, etc) at all. > > I would really like to appreciate your help on this matter. > > Best wishes, > Jong-In Song > > Associate Professor > Dept. of Information and Communications > Kwangju Institute of Science and Technology (K-JIST) > 572 Sangam-dong Kwangsan-ku > Kwangju, Korea 506-712 > tel) +82-62-970-2208 > fax) +82-62-970-2204 > > >