Method for cleaning, employing a surfactant for fine-bubble...

Details Method for cleaning, employing a surfactant for fine-bubble... Method for cleaning, employing a surfactant for fine-bubble...

2009-03-31

2010-11-16

Mruk, Brian P (Department: 1796)

Cleaning and liquid contact with solids

Processes

Miscellaneous

C510S360000, C510S413000, C510S421000, C510S475000, C510S505000, C510S524000, C510S535000, C008S137000, C424S009520, C424S043000, C424S070310

Reexamination Certificate

active

07833359

ABSTRACT:
A method for cleaning articles using a surfactant which is effective in the formation of stable microbubbles is provided. The surfactant for microbubble formation contains a (poly)oxyalkylene adduct (A) of an active hydrogen atom-containing compound (a) represented by formula (1)in-line-formulae description="In-line Formulae" end="lead"?Z-[(AO)n—H]p  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein Z is the residue of an active hydrogen-containing compound (a) with a valence of P resulting from removal of the active hydrogen atom or atoms; A is an alkylene group containing 1 to 8 carbon atoms; n is an integer of 1 to 400; and p is an integer of 1 to 100. The foaming power of a 0.02% by weight aqueous solution of the (poly)oxyalkylene adduct (A) as measured at 20° C. by the Ross Miles test is not higher than 50 mm.

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