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Abstract

Stable, cleaning/degreasing compositions for heavy duty exterior and interior aircraft cleaning and degreasing consisting essentially of (a) between approximately 0.5 and 10.0 weight percent of a specified tertiary amine N-oxide surfactant; (b) between approximately 0.5 and 5.0 weight percent of a specified water-dilutable, soluble or hydrocolloidally dispersable viscosifying agent; (c) between approximately 1 and 10 weight percent of an alkali metal silicate; (d) between approximately 0.1 and 1.0 weight percent of an alkali metal nitrite; and (e) water. The compositions are characterized by having a pH between approximately 10.5 and 13.3 and a Brookfield viscosity (LV-#3 spindle, 12 rpm) of between approximately 500 and 20,000 centipoise. Such compositions exhibit superior efficacy for heavy duty exterior and interior aircraft cleaning and degreasing a variety of surfaces without metal corrosion or stress crazing.

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First Claim