Patent ID: 6849200

Claim:
A wet stripping composition selected from the group consisting of Formulations A-H: Formulation A 0.5% IDA 1.0% NH 4 F 98.5% mixture 3:1 propyleneglycol:water Formulation B 1.5% IDA 1.0% NH 4 F 97.5% mixture 3:1 propyleneglycol:water Formulation C 0.5% IDA 4.0% NH 4 F 95.5% mixture 3:1 propyleneglycol:water Formulation D 1.5% IDA 4.0% NH 4 F 94.5% mixture 3:1 propyleneglycol:water Formulation E 0.5% IDA 1.0% NH 4 F 25% water 73.5% diethylene glycol Formulation F 0.5% IDA 1.0% NH4F 25% water 73.5% propylene glycol methyl ether Formulation G 0.5% IDA 1.0% NH4F 25% water 73.5% diethylene glycol methyl ether Formulation H 0.5% IDA 1.0% NH4F 25% water 73.5% triethylene glycol methyl ether wherein percentages of components in said Formulations are by weight, based on total weight of the Formulation.