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publicationDate 1991-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber EP-0444542-A1
titleOfInvention Cementing compositions containing polyethyleneimine phosphonate derivatives as dispersants
abstract A cementing composition useful in salt formations for cementing oil, gas and water wells, comprising:n (a) water (b) hydraulic cement; and (c) a polyethyleneimine phosphonate derivative dispersant selected from the group consisting ofn and mixtures thereof.
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