C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/32 (2006.01) C09K 8/36 (2006.01)
Patent
CA 2699364
A description is given of the use of oligoglycerol fatty acid ester, prepared from (a) an acid component selected from (al) fatty acids of the general formula (I) in which R is a saturated or unsaturated, branched or linear alkyl or alkenyl radical having 7 to 21 C atoms, and/or (a2) dicarboxylic acids and/or (a3) dimer fatty acids and/or (a4) oligomer fatty acids and/or (a5) hydroxy fatty acids with (b) a polyol component selected from oligoglycerols or alkoxylates of oligoglycerols, as an additive to oil-based drilling fluids for the purpose of enhancing the lubricity of these drilling-mud systems.
L'invention concerne l'utilisation, comme additif de fluides de forage à base d'huile afin d'améliorer l'action lubrifiante de ces fluides, d'un ester d'acide gras d'oligoglycérine fabriqué à partir de : (a) un composant acide, sélectionné parmi (a1) des acides gras de formule générale (I) où R représente un radical alkyle ou alcényle saturé ou insaturé, ramifié ou linaire avec 7 à 21 atomes de carbone, et/ou (a2) des acides dicarboxyliques, et/ou (a3) des acides gras dimères, et/ou (a4) des acides gras oligomères, et/ou (a5) des acides gras hydroxyliques; avec (b) un composant polyol qui est sélectionné parmi les oligoglycérines ou les alcoxylates d'oligoglycérines.
Maeker Diana
Mueller Heinz
Borden Ladner Gervais Llp
Emery Oleochemicals Gmbh
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