Drag reducing copolymers for cold fluid applications

F - Mech Eng,Light,Heat,Weapons – 17 – D

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F17D 1/16 (2006.01) C08J 3/02 (2006.01) C08L 33/10 (2006.01) C10L 1/10 (2006.01) C10L 1/195 (2006.01) C10L 1/196 (2006.01) C10L 1/236 (2006.01) F17D 1/17 (2006.01)

Patent

CA 2732289

Drag reducing compositions comprising polymer particles, where the polymer particles include copolymers comprising the residues of at least one methacrylate monomer and at least one comonomer having a polymerizable vinyl group, where the comonomer has no more than one pendant substituent per vinyl carbon. The drag reducing compositions can have improved dissolution rates in hydrocarbon-containing fluid to decrease the pressure drop associated with the turbulent flow of the hydrocarbon-containing fluid through a conduit.

L'invention porte sur des compositions de réduction de traînée comprenant des particules polymères, les particules polymères comprenant des copolymères comprenant les résidus d'au moins un monomère de méthacrylate et d'au moins un comonomère ayant un groupe vinyle polymérisable, le comonomère ayant pas plus d'un substituant pendant par carbone vinylique. Les compositions de réduction de traînée peuvent avoir des vitesses de dissolution améliorées dans un fluide contenant des hydrocarbures, pour réduire la chute de pression associée à l'écoulement turbulent du fluide contenant des hydrocarbures à travers un conduit.

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