Concentrate suspensions of hydrosoluble polymers

E - Fixed Constructions – 21 – B

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E21B 43/22 (2006.01) C09K 8/08 (2006.01) C09K 8/12 (2006.01)

Patent

CA 1203681

PRECIS DE LA DIVULGATION: L'invention concerne des suspensions concentrées de polymères hydrosolubles de poids moléculaire éléve. Elles comprennent un polymère hydrosoluble de poids molé- culaire éléve, un diluant organique non solvatant du poly- mère, un agent gonflant liquide et un adjuvant polymère de faible poids moléculaire soluble dans l'eau portant des groupes fonctionnels carboxyliques. Ces suspensions sont utiles pour la préparation de solutions aqueuses diluées épaississantes destinées notamment à l'industrie pétrolière, par exemple pour la récupération assistée du pétrole.

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