Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1996-05-28
2000-08-29
DelCotto, Gregory R.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510176, 510245, 510255, 510264, 510499, C11D 732, C11D 750
Patent
active
061108812
ABSTRACT:
A composition for removing resists and etching residue from substrates containing at least one nucleophilic amine compound having oxidation and reduction potentials, at least one organic solvent, water and, optionally, a chelating agent is described. The chelating agent is preferred to be included since it provides added stability and activity to the cleaning composition so that the composition has long term effectiveness. If a chelating agent is not present, the composition, while providing for adequate stripping and cleaning upon initial use of the composition following mixing, has only short term stability. In this latter instance, the nucleophilic amine compound and organic solvent components of the composition preferably are maintained separate from each other until it is desired to use the composition. Thereafter, the components are combined. Following use of the composition, the non-used portion of the composition can be disposed of or be reactivated by the addition of a chelating agent.
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Material Safety Data Sheet, Experimental Stripper, WMX-225 (1 sheet).
Material Safety Data Sheet, Experimental Stripper, WMX-230 (1 sheet).
"Reactions of Catechol", Crown Zellerbach Corp., Chemicals Products Division, Camas, Washington 98607 (pp. 1-33 W/Cover Sheet and Table of Contents).
Lee Wai Mun
Pittman, Jr. Charles U.
Small Robert J.
Delcotto Gregory R.
EKC Technology, Inc.
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