Fuel compositions comprising hydantoin-containing polyether alcohol additives

A method for decreasing intake valve deposits in an internal combustion engine which comprises burning in said engine a fuel composition comprising a major amount of hydrocarbons in the gasoline boiling range and a minor amount of an additive compound having the formula:

• ##STR31## wherein R.sub.1 and R.sub.7 are each independently selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.6 is selected from the group consisting of hydrogen, hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkyl of formula:
• --O--R.sub.10
• wherein R.sub.10 is selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkylene alcohol of 2 to 200 carbon atoms with the proviso that when both R.sub.1 and R.sub.7 are not polyoxyalkylene alcohol, R.sub.6 must be polyoxyalkyl wherein R.sub.10 is polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.5 is selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms and substituted hydrocarbyl of 1 to 100 carbon atoms;
• R.sub.2, R.sub.3, R.sub.8 and R.sub.9 are each independently selected from the group consisting of hydrogen, hydrocarbyl of 1 to 100 carbon atoms and substituted hydrocarbyl of 1 to 100 carbon atoms or R.sub.2 and R.sub.3 and/or R.sub.8 and R.sub.9 can each independently be taken together with the carbon atom to which they are connected to form a cyclic group of 4 to 100 carbon atoms and the weight average molecular weight of the additive compound is at least about 600.

A method for reducing octane requirement in an internal combustion engine which comprises burning in said engine a fuel composition comprising a major amount of hydrocarbons in the gasoline boiling range and a minor amount of an additive compound having the formula:

• ##STR36## wherein R.sub.1 and R.sub.7 are each independently selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.6 is selected from the group consisting of hydrogen, hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkyl of formula:
• --O--R.sub.10
• wherein R.sub.10 is selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkylene alcohol of 2 to 200 carbon atoms with the proviso that when both R.sub.1 and R.sub.7 are not polyoxyalkylene alcohol, R.sub.6 must be polyoxyalkyl wherein R.sub.10 is polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.5 is selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms and substituted hydrocarbyl of 1 to 100 carbon atoms;
• R.sub.2, R.sub.3, R.sub.8 and R.sub.9 are each independently selected from the group consisting of hydrogen, hydrocarbyl of 1 to 100 carbon atoms and substituted hydrocarbyl of 1 to 100 carbon atoms or R.sub.2 and R.sub.3 and/or R.sub.8 and R.sub.9 can each independently be taken together with the carbon atom to which they are connected to form a cyclic group of 4 to 100 carbon atoms and the weight average molecular weight of the additive compound is at least about 600.

A method for controlling the octane requirement increase in an internal combustion engine which comprises burning in said engine a fuel composition comprising a major amount of hydrocarbons in the gasoline boiling range and a minor amount of an additive compound having the formula:

• ##STR37## wherein R.sub.1 and R.sub.7 are each independently selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.6 is selected from the group consisting of hydrogen, hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkyl of formula:
• --O--R.sub.10
• wherein R.sub.10 is selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkylene alcohol of 2 to 200 carbon atoms with the proviso that when both R.sub.1 and R.sub.7 are not polyoxyalkylene alcohol, R.sub.6 must be polyoxyalkyl wherein R.sub.10 is polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.5 is selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms and substituted hydrocarbyl of 1 to 100 carbon atoms;
• R.sub.2, R.sub.3, R.sub.8 and R.sub.9 are each independently selected from the group consisting of hydrogen, hydrocarbyl of 1 to 100 carbon atoms and substituted hydrocarbyl of 1 to 100 carbon atoms or R.sub.2 and R.sub.3 and/or R.sub.8 and R.sub.9 can each independently be taken together with the carbon atom to which they are connected to form a cyclic group of 4 to 100 carbon atoms and the weight average molecular weight of the additive compound is at least about 600.

A fuel composition comprising a mixture of:

• (a) a major amount of hydrocarbons in the gasoline boiling range;
• (b) a minor amount of an additive compound having the formula:
• ##STR38## wherein R.sub.1 and R.sub.7 are each independently selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyal kylene alcohol of 2 to 200 carbon atoms;
• R.sub.6 is selected from the group consisting of hydrogen, hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkyl of formula:
• --O--R.sub.10
• wherein R.sub.10 is selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms, substituted hydrocarbyl of 1 to 100 carbon atoms and polyoxyalkylene alcohol of 2 to 200 carbon atoms with the proviso that when both R.sub.1 and R.sub.7 are not polyoxyalkylene alcohol, R.sub.6 must be polyoxyalkyl wherein R.sub.10 is polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.5 is selected from the group consisting of hydrocarbyl of 1 to 100 carbon atoms and substituted hydrocarbyl of 1 to 100 carbon atoms;
• R.sub.2, R.sub.3, R.sub.8 and R.sub.9 are each independently selected from the group consisting of hydrogen, hydrocarbyl of 1 to 100 carbon atoms and substituted hydrocarbyl of 1 to 100 carbon atoms or R.sub.2 and R.sub.3 and/or R.sub.8 and R.sub.9 can each independently be taken together with the carbon atom to which they are connected to form a cyclic group of 4 to 100 carbon atoms and the weight average molecular weight of the additive compound is at least about 600;
• and
• (c) a minor amount of a detergent selected from the group consisting of polyalkylenyl amines, mannich amines, polyalkenyl succinimides, poly(oxyal kylene) carbamates, poly(alkenyl)-N-substituted carbamates and mixtures thereof.

A compound having the formula:

• ##STR39## wherein R.sub.1 and R.sub.7 are each polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.6 is polyoxyalkyl of formula:
• --O--R.sub.10
• wherein R.sub.10 is polyoxyalkylene alcohol of 2 to 200 carbon atoms;
• R.sub.5 is alkyl of 3 carbon atoms;
• R.sub.2, R.sub.3, R.sub.8 and R.sub.9 are each methyl.