초록

Condensation products made by reacting an aaab

대표청구항 ▼

A fuel composition comprising a major amount of a normally liquid fuel and a minor but carburetor cleaning or anti-screen clogging amount of a product made by the process comprising reacting (A) at least one alpha hydroxy aromatic compound of the general formula [Figure] wherein Ar is a hydrocarbyl

A fuel composition comprising a major amount of a normally liquid fuel and a minor but carburetor cleaning or anti-screen clogging amount of a product made by the process comprising reacting (A) at least one alpha hydroxy aromatic compound of the general formula [Figure] wherein Ar is a hydrocarbyl aromatic nucleus of 6 to about 30 carbon atoms, or an analog of such an aromatic nucleus substituted with 1 to 3 lower alkoxy, lower alkylthio, chloro, or nitro substituents, each R is a nonfused hydrocarbyl group of about 25 to about 700 carbon atoms, each R′is independently a hydrogen atom, an alkyl group of 1 to 36 carbon atoms, or a halogen-substituted alkyl group of 1 to about 36 carbon atoms, n is 1 to 3 and m is 1 to 5 with the provisos that (i) the total number of carbon atoms in the R′groups does not exceed 36 and (ii) where m exceeds 1, one of the R groups can also be a [Figure] with (B) at least one hydrocarbyl, alpha-beta olefinically unsaturated compound selected from the group consisting of C2-40 nitriles, C2-40 carboxylic acids and anhydrides, esters, amides and ammonium and metal salts of said C2-40 carboxylic acids, the reaction of (A) with (B) resulting in the formation of carbon-to-carbon bond, said bond including the carbon of at least one [Figure]