AC-177 Accelerator Solution
AC-177 is a non-fluoride post-catalyst solution designed to accelerate the electroless copper coverage on catalyzed material. It has been designed to dissolve the hydroxide tin complex produced in the rinse steps following activator CT-164. AC-177 will remove excess tin hydroxide from the copper surface thereby aiding in the adhesion of electroless copper to the copper foil. Used prior to the electroless copper, AC-177 will help prevent the accidental drag in of catalyst into the electroless copper bath, and help increase its stability.