Tin/tin-lead stripping solutions

Details Tin/tin-lead stripping solutions Tin/tin-lead stripping solutions

1980-02-11

1981-12-22

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156656, 252 793, 252 794, C23F 100

Patent

active

043069339

ABSTRACT:
An improved tin/tin-lead stripping solution and method of preparing and using same, the solution including one or more compounds containing at least one amino (NH.sub.2) group, one carboxylic acid (--COOH) group and optionally a divalent sulfur group selected from the class of compounds known as amino acids or water/acid soluble derivatives thereof, or selected from the class of compounds known as aromatic carboxylic acids or water/acid soluble derivatives thereof, and incorporated in a basic fluoride-hydrogen peroxide tin-lead stripping solution.

REFERENCES:
patent: 3537926 (1970-11-01), Fischer
patent: 3677949 (1972-07-01), Brindisi
patent: 3990982 (1976-11-01), Dixon

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