Patent ID: 6488723
Filing Date: 2002-12-03
Classification: C10L

Abstract:
An effective octane reducing motor fuel additive composition which reduces and modifies both fuel intake system and combustion chamber deposit formation of an engine consisting essentially of a mixture of:(a) from about 5 to about 50 weight percent, based upon the total weight of the additive, of a detergent component selected from the group consisting of (i) a reaction product of: (A) a substituted hydrocarbon of the formula R1â€”Xâ€ƒâ€ƒ(I) â€ƒwherein R1 is a hydrocarbyl radical having a molecular weight in the range of about 150 to about 10,000, and X is selected from the group consisting of halogens, succinic anhydride and succinic dibasic acid, and (B) an Juno compound of the formula Hâ€”(NHâ€”(A)m)nâ€”Yâ€”R2â€ƒâ€ƒ(II) â€ƒwherein Y is O or NR5, R5 being H or a hydrocarbyl radical having 1-30 carbon atoms; A is a straight chain or branched chain alkylene radical having 1-30 carbon atoms; m has a value in the range of 1-15; n has a value in the range of 0-6; and R2 is selected from the group consisting of H, a hydrocarbyl radical having a molecular weight in the range of about 15 to about 10,000, and a homopolymeric or heteropolymeric polyoxyalkylene radical of the formula R3â€”((Q)a(T)b(Z)c)dâ€”â€ƒâ€ƒ(III) wherein R3 is H or a hydrocarbyl radical having 1-30 carbon atoms, Q, T, and Z are polyoxyalkylene moieties having 1-6 carbon atoms, a, b and c each have values ranging from 0-50, and d has a value in the range of 1-50, and (ii) a polybutylanine or polyisobutylamine of the formula â€ƒwhere R11 is a polybutyl or polyisobutyl radical derived from isobutene and up to 20% by weight of n-butene and R12 and R15 are identical or different and are each hydrogen, an aliphatic or aromatic hydrocarbon, a primary or secondary, aromatic or aliphatic aminoalkylene radical or polyamioalkylene radical, a polyoxyalkylene radical or a heteroaryl or heterocyclyl radical, or, together with the nitrogen atom to which they are bonded, form a ring in which further hetero atoms may be present; and (b) a fuel conditioner consisting essentially of: (i) from about 2 to about 50 weight percent, based upon the total weight of the additive, of a polar oxygenated hydrocarbon having an average molecular weight in the range of about 200 to about 500, an acid number in the range of about 25 to about 175, and a saponification number in the range of about 30 to about 250, and (ii) from about 2 to about 50 weight percent, based upon the total of the additive, of an oxygenated compatibilizing agent having a solubility parameter in the range of about 7.0 to about 14.0 and moderate to strong hydrogen-bonding capacity.