Abstract:
Hydrocarbons, gas mixtures of hydrocarbons, and the like containing hydrogen sulfide are brought into intimate contact with a hydrogen sulfide scavenger prepared by reacting an alkylenepolyamine with formaldehyde, whereby the amount of hydrogen sulfide in the hydrocarbon is significantly reduced.
Abstract:
Detergent additive for liquid fuels, obtained by means of the trans-esterification of a tertiary amine bearing at least two hydroxy functions, with a dialkyl carbonate and a higher aliphatic alcohol, and process for preparing said detergent additive.
Abstract:
An amido alkanolamine composition obtained by reacting, at a temperature of 10.degree. C.-200.degree. C.:(a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and(b) a hydrocarbyl oxypolyoxyalkylene amine represented by the formula: ##STR2## in which R' represents an alkyl, an alicyclic, or a alkylalicyclic radical having from 8 to 30 carbon atoms, x has a value from 5 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals is provided.
Abstract:
The low-temperature properties of distillate fuels are improved when reaction products of pyromellitic dianhydride and amonoalcohols and/or amines with long chain hydrocarbyl groups are incorporated therein.
Abstract:
The invention relates to a liquid fuel mixture, comprising a C.sub.3 and/or at least a C.sub.4 -alkane, at least one oil component and optionally at least one additive, a process for its preparation and its use for two-stroke engines.
Abstract:
Hydrogen sulfide gas evolution from water or hydrocarbons, especially during storage or transport of petroleum residua is suppressed by the incorporation of an effective amount of a diamine of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently an alky radical containing 1 to 14 carbon atoms, (CH.sub.2).sub.n --OR.sub.6 or cycloalkyl containing 5 or 6 carbon atoms and R.sub.5 is hydrogen or methyl. R.sub.1 and R.sub.2 and R.sub.3 and R.sub.4 can be alkylene groups joined together with their respective adjacent N to form a heterocyclic ring. R.sub.6 is hydrogen or an alkyl radical having 1 to 5 carbon atoms and n is an integer of 1 to 5.
Abstract:
Long-chain aliphatic hydrocarbyl polyamino additives which comprise a long-chain aliphatic hydrocarbyl moiety, a polyamino moiety and an oxy-carbonyl connecting group which joins the aliphatic hydrocarbyl moiety and the polyamino moiety are useful as dispersants in fuel compositions and in lubricating oil compositions.
Abstract:
Reaction products in which polyethers are grown from substituted phenol-containing mannich bases have been found to be effective ashless dispersants and detergents for fuels and lubricants.
Abstract:
Certain polyhydric alcohols have been found to be effective in reducing the loss of certain amine oxides from liquid hydrocarbon fuels such as gasoline.