Alkoxy acetic acid derivatives

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 235/10 (2006.01) C07C 69/708 (2006.01) C07C 235/08 (2006.01) C07C 237/10 (2006.01) C07D 295/13 (2006.01) C07D 295/15 (2006.01) C10L 1/18 (2006.01) C10L 1/198 (2006.01) C10L 1/22 (2006.01) C10L 1/238 (2006.01) C10L 10/00 (2006.01)

Patent

CA 2252828

This invention provides alkoxy acetic acid derivatives of general formula (I) wherein R is the residue of an amine, an aminoalcohol or a polyol linked to the or each -CHR'-CO- moiety via an amide or ester linkage; R' is hydrogen or a C1-4 alkyl group; R1 is an optionally substituted hydrocarbyl group of 1 to 300 carbon atoms; one of R2 and R3 is independently selected from hydrogen and optionally substituted hydrocarbyl of 1 to 10 carbon atoms, the other of R2 and R3 being independently selected from optionally substituted hydrocarbyl of 1 to 10 carbon atoms; m is from 3 to 200; n is from 0 to 20, provided that m/n is at least 1; and p is from 1 to 5; a process for their preparation; and their incorporation in additive concentrates and fuel compositions for internal combustion engines. Derivatives of formula (I) give rise to advantageous engine cleanliness effects.

Dérivés d'acide alcoxyacétique de formule générale (I) dans laquelle R est le reste d'une amine, un aminoalcool ou un polyol lié à la fraction unique ou à chaque fraction -CHR'-CO- par le biais d'une liaison amide ou ester, R' est hydrogène ou un groupe alkyle C¿1-4?, R?1¿ est un groupe hydrocarbyle éventuellement substitué ayant 1 à 300 atomes de carbone; R?2¿ ou R?3¿ est indépendamment choisi parmi hydrogène et hydrocarbyle éventuellement substitué ayant 1 à 10 atomes de carbone, l'autre de R?2¿ ou R?3¿ étant indépendamment hydrocarbyle éventuellement substitué ayant 1 à 10 atomes de carbone; m vaut de 3 à 200; n vaut de 0 à 20, à condition que m/n soit au moins égal à 1; et p vaut de 1 à 5. La présente invention concerne un procédé de préparation desdits dérivés, leur ajout à des concentrats d'addition et à des compositions de carburant pour des moteurs à combustion interne. Les dérivés de formule (I) entraînent des effets avantageux de propreté du moteur.

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