Aqueous gellable composition containing an anti-syneresis agent

Details Aqueous gellable composition containing an anti-syneresis agent Aqueous gellable composition containing an anti-syneresis agent

C - Chemistry, Metallurgy

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C08L 33/26 (2006.01) C08K 5/09 (2006.01) C08K 5/17 (2006.01) C08K 5/5353 (2006.01) C09K 8/24 (2006.01) C09K 8/512 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2083784

An aqueous gellable composition capable of producing gels resistant to syneresis in the presence of divalent ions, contains: - a water-soluble acrylamide polymer or copolymer, - a crosslinking agent formed by a water-soluble aldehyde, or a water-soluble aldehyde and a water- solubte phenol, - a water-soluble anti-syneresis agent selected from: organic carboxy acids, organic hydroxy acids and aminoacids, or among aminophosphonic acids and their alkali-metal or ammonium salts, When malonic acid is used, a delay in aqueous composition gelation is additionally obtained.

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