Additive for improving the flow properties of mineral oils...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 3/00 (2006.01) C10L 1/14 (2006.01) C10L 1/18 (2006.01) C10M 161/00 (2006.01) C10L 1/16 (2006.01) C10L 1/22 (2006.01)

Patent

CA 2246580

The invention relates to an additive for improving the flow properties of paraffin-containing mineral oils and mineral oil distillates, comprising a mixture of at least one ethylene/vinyl ester copolymer or terpolymer and at least one paraffin dispersant, wherein said mixture contains ethers and/or esters as solubilizers, where a) the ethers conform to the formula 1 R-O-R' (1), in which R is a linear or branched alkyl or alkenyl group having 4 to 30 carbon atoms, and R' is a linear or branched alkyl or alkenyl group having 1 to 30 carbon atoms, b) the esters are derived from monobasic or polybasic carboxylic acids having 4 to 30 carbon atoms (acid radical) and from monohydric or polyhydric alcohols having 1 to 30 carbon atoms (alcohol radical), or c) the ethers and/or esters are cyclic, with a ring size of from 6 to 30 carbon atoms. The invention furthermore relates to a process for improving the flow properties of mineral oils and mineral oil distillates which comprises adding the novel additive thereto.

L'invention porte sur un additif pour améliorer la fluidité d'huiles minérales et de distillats de celles-ci, renfermant des paraffines; l'additif renferme un mélange d'au moins un copolymère ou terpolymère d'éthylène/ester vinylique, et d'au moins un dispersant de paraffines; ledit mélange contient des éthers et (ou) des esters comme agents de solubilisation. Les conditions suivantes s'appliquent : a) les éthers correspondent à la formule (1) R-O-R', dans laquelle R est un groupe alkyle ou alcényle, linéaires ou ramifiés, de 4 à 30 atomes de carbone, et R' un groupe alkyle ou alcényle, linéaires ou ramifiée, de 1 à 30 atomes de carbone; b) les esters sont dérivés d'acides carboxyliques, monobasiques ou polybasiques, de 4 à 30 atomes de carbone (radical acide), et d'alcools monohydriques ou polyhydriques, de 1 à 30 atomes de carbone (radical alcool); c) ou alors les éthers et (ou) les esters sont cycliques, avec un cycle de 6 à 30 atomes de carbone. L'invention porte aussi sur une méthode pour améliorer la fluidité d'huiles minérales et de distillats de celles-ci, consistant à leur ajouter le nouvel additif.

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