Use of biodegradable alcoxylation products for cleaning boreholes, boring instruments or borings
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United States of America Patent
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Sep 18, 2001
Grant Date -
N/A
app pub date -
Jul 2, 1999
filing date -
Oct 30, 1996
priority date (Note) -
Expired
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Abstract
A process for cleaning boreholes, drilling equipment and drill cuttings is presented involving the application of a cleaning composition to surfaces and the subsequent removal of the cleaning composition and soils. The cleaning composition contains a cleaning additive having alkoxylation products obtained by the reaction of ethylene oxide, propylene oxide, butylene oxide or mixtures thereof with an OH-containing C.sub.10-22 carboxylic acid or derivative thereof, where structural units corresponding to formula (I): ##STR1## comprise one or both of the 9/10 or 13/14 positions, wherein R.sup.1 is a hydrogen atom, an OH group or a OR.sup.2 group, R.sup.2 is an alkyl group containing 1 to 18 carbon atoms, an alkenyl group containing 2 to 18 carbon atoms or a group corresponding to formula (II): ##STR2## where R.sup.3 is a hydrogen atom, an alkyl group containing 1 to 21 carbon atoms or an alkylene group containing 2 to 21 carbon atoms. The cleaning composition is biodegradable.
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