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US 5,707,947 AGranted
Organic stripping composition
AssigneeAshland Inc.
InventorsIrl E. Ward, Francis W. Michelotti
Life of this patent
Estimating the term…
Abstract
Organic stripping composition for photoresists comprising organic polar solvents and basic amines which includes an inhibitor which forms a coordination complex with a metal.
Claims1
In an aqueous stripping composition for removing coatings from a substrate wherein said stripping composition consists of stripping effective amounts of more than about 50 wt % up to about 98 wt % organic polar solvent, up to about 20 wt % water, and a basic amine, the improvement wherein said composition is an admixture which further consists of an effective inhibiting amount a compound of the formula:
- ##STR6## wherein G is hydrogen and A and B are hydroxyl, and said polar solvent and said basic amine are different.
Dependencies are inferred from the claim text.