Additive mixture as component of a mineral oil composition

Details Additive mixture as component of a mineral oil composition Additive mixture as component of a mineral oil composition

C - Chemistry, Metallurgy

10

L

C10L 1/14 (2006.01)

Patent

CA 2542935

An additive mixture as component of a composition of mineral oil as main component and trace portions of an additive mixture containing the additive components a) ethylene-vinylester copolymers modified by polar groups with molecular mass weight averages from 3000 to 50000 and an ethylene component of 50 to 90 mass %, and b) C2-C6-oxyalkyl-bridged C12-C40-monocarboxylic acids, and/or c) partially and/or completely imidated copolymers of unsaturated C4-C20-dicarboxylic acid anhydrides and vinyl aromatics and/or C2-C36-.alpha.-olefins, whereby the content of the additive mixture in the mineral is 0.005 to 1 mass %. The compositions are suitable as flowable media to be transported at low temperatures and as mineral oil fuels with high lubricity and flowability.

L'invention concerne un mélange d'additifs utilisé comme constituant d'une formulation à base d'huile minérale, en tant que constituant principal, et de proportions réduites d'un mélange d'additifs. Ledit mélange d'additifs contient les constituants suivants : a) des copolymères éthylène-vinylester modifiés par des groupes polaires, présentant des indices rectifiés de masse polaire de l'ordre de 3.000 à 50.000 et une proportion en éthylène comprise entre 50 et 90 % en masse, et b) des acides monocarboxyliques C12-C40 pontés par oxyalkyle C2-C6, et/ou c) des copolymères partiellement et/ou entièrement imidisés, à base d'anhydrides d'acide dicarboxylique C4-C20 insaturés et de vinylaromatiques et/ou d' alpha -oléfines C2-C36, la teneur du mélange d'additifs dans l'huile minérale se situant entre 0,005 et 1 % en masse. Ces formulations s'utilisent comme milieux coulants à transporter à basse température et comme carburant à base d'huile minérale à haut pouvoir lubrifiant et à aptitude élevée à l'écoulement.

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