C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 229/52 (2006.01) C07C 69/94 (2006.01) C07C 205/57 (2006.01) C07C 229/38 (2006.01) C07C 255/57 (2006.01) C10L 1/198 (2006.01) C10L 1/22 (2006.01) C10L 1/238 (2006.01) C10L 10/00 (2006.01)
Patent
CA 2246111
Substituted biphenyl polyalkyl esters having the formula: Image wherein R1 is hydrogen or hydroxyl; R2 is hydroxyl, cyano, nitro, amino, aminomethyl, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains 1 to about 6 carbon atoms, N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains 1 to about 6 carbon atoms, with the proviso that R1 and R2 are ortho relative to each other and meta or para relative to the adjoining phenyl substitutent; and R3 is a polyalkyl group having an average molecular weight in the range of about 450 to about 5,000. The substituted biphenyl polyalkyl esters of the present invention are useful as fuel additives for the prevention and control of engine deposits.
Divulgation de 4-biphénylformiates de polyalkyle substitués de formule Image , dans laquelle : R1 est un atome d'hydrogène ou un radical hydroxyle; R2 est un radical hydroxyle, cyano, nitro, amino, aminométhyle, N-alkylamino, N-alkylaminométhyle, N,N-dialkylamino ou N,N-dialkylaminométhyle, chaque groupement alkyle contenant, de manière indépendante, de 1 à environ 6 atomes de carbone; avec la condition que R1 et R2 se trouvent en position ortho l'un par rapport à l'autre et en position méta ou para par rapport au phényle adjacent; et R3 est un groupement polyalkyle ayant un poids moléculaire moyen allant d'environ 450 à environ 5 000. Ces 4-biphénylformiates de polyalkyle substitués sont utiles comme additif pour carburant afin de prévenir et de limiter les dépôts dans le moteur.
Chevron Chemical Company Llc
Sim & Mcburney
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