Patent
Process for preparing overbased calcium sulfonates
TLDR
In this article, over-based calcium sulfonates and concentrated oily solutions thereof are prepared by reacting a solution of alkylbenzene sulfonic acids with an excess of a calcium oxide having a medium or low activity towards water and with carbon dioxide.Abstract:
Overbased calcium sulfonates and concentrated oily solutions thereof are prepared by reacting a solution of alkylbenzene sulfonic acids with an excess of a calcium oxide having a medium or low activity towards water and with carbon dioxide. Oily solutions of overbased calcium sulfonate obtained from such a calcium oxide are perfectly limpid and are easily filtrable.read more
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One-step process for preparation of overbased calcium sulfonate greases and thickened compositions
TL;DR: Improved 1-step process for the preparation of thixotropic over-based calcium sulfonate complex greases or thickened compositions containing calcite as a dispersing agent and containing calcium carbonate in the form of calcite crystals in extremely finely divided form colloidally dispersed in said greases as discussed by the authors.
Patent
Process for preparing overbased calcium sulfonates
TL;DR: In the preparation of an over-based calcium sulfonate, it has been found that adding the calcium hydroxide during the carbonation reaction reduced solid waste as discussed by the authors, where an initial charge of 15 to 25 wt % of the total calcium hydoxide is added to initiate the reaction, and the balance is added by a process whereby calcium hyroxide concentration remains low in the reaction admixture to reduce amorphous calcium carbonate residence time.
Patent
Non-foaming detergent-dispersant additives for lubricating oils and process for making such additives
TL;DR: In this paper, detergent-dispersant additives for lubricating oils that are made by contacting an alkylarylsulfonic acid with an alkaline earth base in the presence of an alcohol having a boiling point in excess of 80° C, water, chloride ions and preferably a C 1 -C 4 carboxylic acid are disclosed.
Patent
One-step process for preparation of thixotropic overbased calcium sulfonate complex thickened compositions
Ron Muir,Kevin L Mulrooney +1 more
TL;DR: In this paper, an improved 1-step process for the preparation of thixotropic over-based calcium sulfonate complex thickened compositions containing CaCO 3 in the form of calcite crystals in colloidal or extremely finely divided form is described.
Patent
Lubricants with linear alkaryl overbased detergents
TL;DR: Lubricants containing over-based detergents with linear, alkyl substituted, aromatic component have superior water shedding and engine performance properties as discussed by the authors, and they have superior engine performance.
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Process for preparing highly-basic, magnesium-containing dispersion
TL;DR: A process for preparing a fluid, highly-basic, magnesium-containing dispersion, wherein the process comprises: forming an admixture of oil soluble dispersing agent, magnesium oxide, volatile solvent, water, alcohol, and ammonia or ammonium compound, treating the admixture with carbon dioxide, adding to the carbonated admixture a nonvolatile diluent oil, and removing the volatile materials as mentioned in this paper.