Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2007-02-27
2007-02-27
Webb, Gregory (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S407000, C134S003000
Reexamination Certificate
active
10745079
ABSTRACT:
A chemical stripping solvent composition is provided for removing cured polymeric isoprene and bisbenzocyclobutene (BCB) substances from an inorganic substrate. The stripping composition comprises about 20 to about 30 weight percent anisole, about 20 to about 30 weight percent mesitylene, about 35 to about 55 weight percent of an alkylbenzene sulfonic acid, and may contain methane sulfonic acid (MSA) at 3 to about 10 weight percent, added to remove BCB in the full-cured state. Also provided is a method for stripping cured polymeric organic substances by contacting the polymeric organic substance with the stripping solvent composition at a given temperature and for a period of time sufficient to essentially dissolve and remove cured polymeric substances.
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General Chemical Performance Products LLC
Plantamura Arthur J.
Webb Gregory
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