Tagged scale inhibiting polymers, compositions comprising...

C - Chemistry – Metallurgy – 02 – F

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C02F 5/00 (2006.01) C02F 5/14 (2006.01) C07F 9/48 (2006.01) C08F 220/06 (2006.01) C23F 11/10 (2006.01) C23F 11/14 (2006.01) E21B 37/06 (2006.01)

Patent

CA 2530147

The invention relates to tagged scale-inhibiting polymers, to compositions comprising said polymers, and to a method for preventing or controlling scale formation in systems comprising said fluids. The tagging units are units deriving from a monomer having formula X2C=CYY', wherein X, which is identical or different, is a hydrogen atom, or a Cl-C4 alkyl group, Y is a hydrogen atom or a C1-C4 alkyl group, Y' is a group having formula -L-Arom, wherein L is a covalent bound or a divalent organic linking group optionally comprising. heteroatoms, and Arom is a group comprising at least two conjugated aromatic rings, preferably at least three, said rings comprising conjugated carbon atoms, and, linked to said carbon atoms, hydrogen atoms or substituants.

L'invention concerne des polymères antitartres marqués, des compositions contenant lesdits polymères ainsi qu'un procédé pour prévenir ou contrôler l'entartrage dans des systèmes contenant ces fluides. Les unités de marquage sont des unités dérivées d'un monomère de formule X¿2?C=CYY', dans laquelle X, qui est identique ou différent, est un atome d'hydrogène ou un groupe alkyle en C¿1?-C¿4? ; Y est un atome d'hydrogène ou un groupe alkyle en C¿1?-C¿4? et Y' est un groupe de formule -L-Arom, dans laquelle L est une liaison covalente ou un groupe de liaison organique divalent présentant éventuellement des hétéroatomes et Arom est un groupe présentant au moins deux cycles aromatiques conjugués, de préférence au moins trois, lesdits cycles présentant des atomes de carbone conjugués et, liés à ces atomes de carbone, des atomes d'hydrogène ou substituants.

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