摘要:
A process of preparing metallic detergent-dispersant compositions is provided by:1. Reacting sulfur with an alkylphenol, bearing one or more C.sub.6 -C.sub.60 alkyl substituents, in the presence of a dilution oil, an alkaline-earth metal alkylbenzene sulfonate of a molecular weight of more than about 300 and a TBN of less than or equal to about 150, an alkaline-earth metal compound, optionally an alkaline-metal hydroxide, a base component of metallic detergent-dispersant of a TBN greater than or equal to 200 selected from among superalkalinized sulfurized alkaline-earth metal alkylphenates, alkaline-earth metal alkylbenzene sulfonates, and mixtures of superalkalinized sulfurized alkaline earth metal alkylphenates and alkaline-earth metal alkylbenzene sulfonates, and an alkylene glycol, at a temperature of between 100.degree. C. and 190.degree. C.;2. Carbonating the resultant mixture with carbon dioxide at a temperature of between 100.degree. C. and 200.degree. C., the amount of CO.sub.2 being between that which can be completely absorbed and an excess of 30 percent of said amount;3. Removing the alkylene glycol; and4. Separating the metallic detergent-dispersant of high alkalinity thus obtained.The detergent-dispersants thus obtained are useful in improving the detergent-dispersant power of lubricating oils.
摘要:
High alkalinity metallic lubricating oil additives and a method of making them are disclosed. A magnesium alkylbenzenesulfonate and a sulfurized calcium alkylphenate are carbonated in the presence of an oil, magnesium oxide, a glycol, and an amine. The glycol, water, and sediment are then removed from the resulting medium.
摘要:
Super-alkalinized lubricating oil additives and a method of making them are disclosed. A magnesium alkylbenzenesulfonate and a sulfurized alkylphenol are carbonated in the presence of an oil, magnesium oxide, a glycol, and an amine. The resulting medium is neutralized and super-alkalinized with lime, and the glycol and sediment are removed.
摘要:
A process is provided for preparing detergent-dispersant compositions of high alkalinity by:1. Carbonation, at a temperature of between about 100.degree. C. and 250.degree. C., with carbon dioxide of a reaction medium comprising a sulfurized alkylphenate of an alkaline-earth metal having a TBN of between about 1 and 170, an alkaline-earth metal alkylbenzene sulfonate having a molecular weight of more than about 300 and a TBN of less than or equal to about 150, an alkaline-earth metal compound, an alkylene glycol, and a dilution oil;2. Removal of the alkylene glycol; and3. Separation of the superalkalinized metallic detergent-dispersant thus obtained.The metallic detergent-dispersant compositions obtained are useful in improving the detergent-dispersant power of lubricating oils.
摘要:
A process is provided for preparing detergent-dispersant compositions of a TBN of at least about 200, containing at least about 2 percent magnesium, by:(1) sulfurization by sulfur of an alkylphenol in the presence of a magnesium and/or calcium alkylbenzene-sulfonate of a TBN less than or equal to about 150, an alkaline-earth component selected from among lime, mixtures of magnesium oxide and lime, or a magnesium oxide and alkali hydroxide, and an alkylene glycol;(2) optionally precarbonation of the resultant mixture by means of CO.sub.2 ;(3) super-alkalinization and carbonation of the resultant mixture by means of magnesium oxide and possibly lime, CO.sub.2 and alkylene glycol; and(4) removal of the excess alkylene glycol.The detergent-dispersant compositions obtained are useful in the improvement of the detergent-dispersant properties of lubricating oils.
摘要:
New detergent-dispersants of high alkalinity useful as additives for lubricating oils and a novel process for their preparation are provided.The novel detergent-dispersant additives are prepared by:(1) sulfurizing an alkylphenol in the presence of an alkylbenzene sulfonate of low or zero T.B.N., an alkaline earth base and an alkylene glycol;(2) precarbonating the mixture thus obtained;(3) super-alkalinizing and carbonating the resultant precarbonated mixture by means of an alkaline earth base, CO.sub.2, and an alkylene glycol; and(4) eliminating the excess alkylene glycol.These detergent-dispersant additives improve the detergent-dispersant power of lubricating oils.
摘要:
A process for preparing an overbased alkaline earth metal alkylhydroxybenzoate, said process comprising overbasing an alkaline earth metal alkylhydroxybenzoate or a mixture of alkaline earth metal alkylhydroxybenzoate and up to 50 mole % of alkylphenol, based on the total mixture of alkylhydroxybenzoate and alkylphenol, with a molar excess of alkaline earth metal base and at least one acidic overbasing material in the presence of at least one carboxylic acid having from one to four carbon atoms and a solvent selected from the group consisting of aromatic hydrocarbons, aliphatic hydrocarbons, monoalcohols, and mixtures thereof.
摘要:
The present invention is directed to novel alkylated aromatic compositions, zeolite catalyst compositions and processes for making the same. The catalyst compositions comprise zeolite Y and mordenite zeolite having a controlled macropore structure. The present invention is also directed to the preparation of the catalyst compositions and their use in the preparation of novel alkylated aromatic compositions. The catalyst compositions of the present invention exhibit reduced deactivation rates during the alkylation process, thereby increasing the life of the catalysts.
摘要:
The present invention is directed to a zeolite Y catalyst having a controlled macropore structure. The present invention is also directed to a zeolite Y catalyst composite and a process for preparing the catalyst composite. The catalyst composite exhibits reduced deactivation rates during the alkylation process, thereby increasing the life of the catalyst. The present invention is also directed to processes for the preparation of carbonated, overbased aromatic sulfonates, which processes comprise alkylation, carbonation of aromatic hydrocarbons with one or more olefins.
摘要:
The present invention provides overbased detergents as lubricating additives effective for the lubrication of mechanical components in land and marine engines, such as, for example, hydraulic systems, transmissions, two-stroke and four-stroke vehicular engines, and trunk piston and two-stroke crosshead marine engines.