公开(公告)号：DE69014789T2

公开(公告)日：1995-05-18

申请号：DE69014789

申请日：1990-01-04

Applicant: MACDERMID INC

Inventor： CORDANI JOHN ,  LANE KARL ,  BIRAN ZVI ,  LETIZE RAYMOND

IPC: C09K13/04 ,  C09K13/06 ,  C23F1/30 ,  C23F1/44 ,  H05K3/06 ,  C09K13/00 ,  B44C1/22 ,  C23F1/00 ,  H01L21/312

Abstract: A composition for stripping tin or solder, as well as any underlying copper-tin alloy, from copper surfaces, containing an alkane sulfonic acid, preferably methane sulfonic acid, and an inroganic nitrate, preferably ferric nitrate. The composition effects stripping without any appreciable formation of sludge or precipitate or suspended particles.

公开(公告)号：DE69014789D1

公开(公告)日：1995-01-19

申请号：DE69014789

申请日：1990-01-04

Applicant: MACDERMID INC

Inventor： CORDANI JOHN ,  LANE KARL ,  BIRAN ZVI ,  LETIZE RAYMOND

IPC: C09K13/04 ,  C09K13/06 ,  C23F1/30 ,  C23F1/44 ,  H05K3/06 ,  C09K13/00 ,  B44C1/22 ,  C23F1/00 ,  H01L21/312

Abstract: A composition for stripping tin or solder, as well as any underlying copper-tin alloy, from copper surfaces, containing an alkane sulfonic acid, preferably methane sulfonic acid, and an inroganic nitrate, preferably ferric nitrate. The composition effects stripping without any appreciable formation of sludge or precipitate or suspended particles.