C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 271/28 (2006.01) C08G 65/32 (2006.01) C08G 65/332 (2006.01) C08G 65/333 (2006.01) C08G 65/48 (2006.01) C10L 1/14 (2006.01) C10L 1/18 (2006.01) C10L 1/22 (2006.01) C10L 1/238 (2006.01) C10L 10/00 (2006.01) C10L 1/16 (2006.01) C10L 1/30 (2006.01)
Patent
CA 2165309
Poly(oxyalkylene) hydroxy and amino aromatic carbamates having formula (I) or a fuel-soluble salt thereof; wherein X is hydroxy or amino; R is hydrogen or lower alkyl having 1 to 6 carbon atoms; R1 and R2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, lower alkoxy having 1 to 6 carbon atoms, nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R3 and R4 are each independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R5 is hydrogen, alkyl having 1 to 30 carbon atoms, phenyl, aralkyl or alkaryl having 7 to 36 carbon atoms, or an acyl group having formula (II) wherein R6 is alkyl having 1 to 30 carbon atoms, phenyl, or aralkyl or alkaryl having 7 to 36 carbon atoms; and n is an integer from 5 to 100. The poly(oxyalkylene) hydroxy and amino aromatic carbamates of formula (I) are useful as fuel additives for the prevention and control of engine deposits.
Carbamates aromatiques hydroxy et amino de poly(alkylène) de formule (I) ou sel desdits carbamates soluble dans le carburant, formule dans laquelle X est hydroxy ou amino; R est hydrogène ou alkyle inférieur ayant 1 à 6 atomes de carbone; R¿1? et R¿2? sont chacun indépendamment hydrogène, hydroxy, alkyle inférieur ayant 1 à 6 atomes de carbone, alcoxy inférieur ayant 1 à 6 atomes de carbone, nitro, amino, N-alkylamino dans lequel le groupe alkyle contient 1 à 6 atomes de carbone, ou N,N-dialkylamino dans lequel chaque groupe alkyle contient indépendamment 1 à 6 atomes de carbone; R¿3? et R¿4? sont chacun indépendamment hydrogène ou alkyle inférieur ayant 1 à 6 atomes de carbone; R¿5? est hydrogène, alkyle ayant 1 à 30 atomes de carbone, phényle, aralkyle ou alcaryle ayant 7 à 36 atomes de carbone ou un groupe acyle de formule (II), dans laquelle R¿6? est alkyle ayant 1 à 30 atomes de carbone, phényle ou aralkyle ou alcaryle ayant 7 à 36 atomes de carbone; et n est un nombre entier de 5 à 100. Lesdits carbamates de formule (I) sont utiles comme adjuvants de carburants pour empêcher et limiter les dépôts dans les moteurs.
Chevron Chemical Company
Sim & Mcburney
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