Abstract:
Disclosed are polyaminoalkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## wherein W is oxygen or sulfur; X is oxygen or sulfur; R.sub.4 is an alkylene group of from 2 to 3 carbon atoms or an alkylene group of from 2 to 3 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each; and R.sub.5 is hydrogen or alkyl of from 1 to 20 carbon atoms. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.
Abstract:
The reduction of octane requirement in a spark-ignited, internal combustion engine is achieved by introducing, with the combustion intake charge, a fuel and/or lubricant composition containing an octane requirement reduction amount of a substituted urea compound represented by the formula: ##STR1## in which X is an oxygen or sulfur atom, R.sub.1 and R.sub.3 are hydrocarbyl radicals having from 1 to 3 carbon atoms, and R.sub.2 is selected from the group consisting of ##STR2## Particularly useful as ORR agents are: (a) 4-[N-(2,4-xylyl) carbamoyl] morpholine;(b) 1-[N-(2,4-xylyl) carbamoyl] piperidine; and(c) 1-(2-pyridyl)-3-(3,4-xylyl)-2-thiourea.
Abstract:
Microorganism induced corrosion of storage vessels which contain a heel of water and an upper layer of hydrocarbon liquid may be prevented by adding to the hydrocarbon liquid contained in such storage vessels a water-dispersible polyvinyl alcohol package which contains a microbiocide.