Water-soluble copolymer and its preparation

Details Water-soluble copolymer and its preparation Water-soluble copolymer and its preparation

C - Chemistry, Metallurgy

08

F

31/23, 402/322

C08F 220/58 (2006.01) C09K 8/24 (2006.01)

Patent

CA 1171597

Abstract of The Disclosure Outstandingly suitable drilling mud additives are water soluble copolymers consisting essentially of a random distribution of a) 5 to 95% by welght of urllefi of Lhe formuia Image ; b) 5 to 95% by weight of uniLs of .he formula Image and ; c) 0 the 80% by welght of units of the formula Image ; wherein R1 and R2 are the same or different and each is hydrogne, methyl or ethyl; and X? is cation.

357594

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