Biopolymeric compositions, and process for their preparation

C - Chemistry – Metallurgy – 08 – J

Patent

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31/26, 134/50

C08J 3/02 (2006.01) C08J 3/03 (2006.01) C08L 5/00 (2006.01) E21B 43/22 (2006.01)

Patent

CA 1280049

PRECIS DE LA DIVULGATION: L'invention concerne des compositions à base de biopolymères contenant au moins 8% en poids de biopolymère, caractérisées en ce qu'elles sont sous forme d'une émulsion stable huile dans eau comprenant en poids a) 40 à 99 parties d'une phase aqueuse contenant en poids 10 à 60% de biopolymère et 40 à 90% d'eau, b) 1 à 60 parties d'huile, c) 1 à 40% par rapport au mélange a) + b) d'au moins un agent tensio-actif. L'invention concerne également un procédé de fabrication de ces compositions ainsi que leur utilisation dans toutes les applications requérant des fluides aqueux viscosifiés, notamment la récupération assistée du pétrole.

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