C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 69/88 (2006.01) C07C 69/73 (2006.01) C10L 1/14 (2006.01) C10L 1/18 (2006.01) C10L 1/198 (2006.01) C10L 10/00 (2006.01) C10L 1/16 (2006.01) C10L 1/22 (2006.01) C10L 1/30 (2006.01)
Patent
CA 2130187
Poly(oxyalkylene) hydroxyaromatic esters having the formula: (see formula I) or a fuel-salable salt thereof; where R1 and R2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 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 aryl group having the formula: (see formula II or III) wherein R6 is alkyl having 1 to 30 carbon atoms, phenyl, or aralkyl or alkaryl having 7 to 36 carbon atoms; R7 and R8 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; n is an integer from 5 to 100; and x and y are each independently an integer from 0 to 10. The poly(oxyalkylene) hydroxyaromatic esters of formula I are useful as fuel additives for the prevention and control of engine deposits.
Chevron Research And Technology Company
Sim & Mcburney
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