Fuel compositions and additives therefor

Details Fuel compositions and additives therefor Fuel compositions and additives therefor

C - Chemistry, Metallurgy

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C10L 1/22 (2006.01) C10L 1/14 (2006.01) C10L 10/00 (2006.01) C10L 1/16 (2006.01) C10L 1/18 (2006.01) C10L 1/24 (2006.01) F02B 1/04 (2006.01)

Patent

CA 2133796

A highly effective fuel additive composition for control of intake valve deposits is described. It comprises (a) a gasoline-soluble Mannich reaction product of (i) a high molecular weight alkyl-substituted phenol wherein the alkyl group has a number average molecular weight of from about 600 to about 3000, (ii) amine, and (iii) aldehyde; and (b) a gasoline-soluble poly(oxyalkylene) compound having a viscosity in its undiluted state of at least about 70 cSt at 40°C and at least about 13 cSt at 100°C. These components are proportioned such that there are from about 0.2 to about parts by weight of active Mannich base in (a) per part by weight of (b).

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