Copolymers and their reaction products with amines suitable...

C - Chemistry – Metallurgy – 08 – F

Patent

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C08F 210/04 (2006.01) C08F 8/32 (2006.01) C08F 210/14 (2006.01) C08F 222/02 (2006.01) C08F 222/04 (2006.01) C08F 255/02 (2006.01) C10L 1/14 (2006.01) C10L 1/22 (2006.01) C10L 1/236 (2006.01) C10L 1/238 (2006.01) C10L 10/00 (2006.01) C10M 143/08 (2006.01) C10M 145/16 (2006.01) C10M 149/06 (2006.01) C08F 222/06 (2006.01)

Patent

CA 2171428

Copolymers I carrying functional groups and comprising a) 20-60 mol% of at least one monoethylenically unsaturated C4-C6-dicarboxylic acid or an anhydride thereof, b) 10-70 mol% of at least one oligomer of propene or of a branched 1-olefin of 4 to 10 carbon atoms, having an average molecular weight Mw of from 300 to 5000, and c) 1-50 mol% of at least one monoethylenically unsaturated com- pound which is copolymerizable with the monomers a) and b), a process for their preparation, oil-soluble reaction products obtainable therefrom by reaction with an amine and the use of said reaction products as additives for lubricants and fuels.

Des copolymères (I) portant des groupes fonctionnels sont constitués de: a) 20 à 60 % en moles d'au moins un acide dicarboxylique C4-C6 monoéthyléniquement insaturé ou de son anhydride; b) 10 à 70 % en moles d'au moins un oligomère du propène ou d'une oléfine-1 ramifiée ayant entre 4 et 10 atomes de carbone et un poids moléculaire moyen Mw compris entre 300 et 5000; et c) 1 à 50 % en moles d'au moins un composé monoéthyléniquement insaturé copolymérisable avec les monomères (a) et (b). L'invention concerne en outre un procédé de préparation de ces copolymères, des produits de réaction solubles dans l'huile obtenus par réaction de ces copolymères avec une amine et leur utilisation comme additifs de lubrifiants et de carburants.

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