Process for delaying the gelling process of insaturated...

C - Chemistry – Metallurgy – 08 – F

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31/23, 260/540.1

C08F 2/00 (2006.01) C08F 2/40 (2006.01) C09K 8/50 (2006.01)

Patent

CA 1323375

PRECIS DE LA DIVULGATION: Procédé pour retarder la gélification de monomères vinyliques en milieu aqueux en présence d'un amorceur de polymérisation, consistant à mettre en oeuvre un inhibiteur constitué par un sel de N-nitrosophenylamine associé à un acide aminocarboxylique. Compositions aqueuses à gélification retardée constituées d'un monomère vinylique, d'un peroxyde organique, d'un sel N- nitrosophenylamine et d'un acide aminocarboxylique. Utilisation de ces compositions pour le colmatage de pertes de circulation en forage à grande profondeur.

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