Microemulsion cleaning composition

Earth boring – well treating – and oil field chemistry – Preventing contaminant deposits in petroleum oil conduits

Reexamination Certificate

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Details

C507S267000, C510S108000, C510S403000, C510S461000, C510S505000, C510S531000, C510S535000, C516S073000, C516S902000

Reexamination Certificate

active

07902123

ABSTRACT:
A cleaning composition including which comprises a surfactant and a propionate as co-surfactant and/or co-solvent. The composition can be used, for example, to clean drilling mud containing oils.

REFERENCES:
patent: 3107726 (1963-10-01), Greenwald
patent: 3948325 (1976-04-01), Winston et al.
patent: 4473116 (1984-09-01), Hedges
patent: 5034140 (1991-07-01), Gardner et al.
patent: 5510037 (1996-04-01), Tastayre
patent: 5731281 (1998-03-01), Mondin et al.
patent: 2004/0063795 (2004-04-01), VonKrosigk et al.

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